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You searched for: Subject backcrossing Remove constraint Subject: backcrossing Subject term flowering Remove constraint Subject term: flowering
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1. Agronomic Performance and Nature of Gene Effects in Progenitor Species-Derived Genotypes of Tobacco

Author:
S. Oupadissakoon; E. A. Wernsman
Source:
Crop science 1977 v.17 no.6 pp. 843-847
ISSN:
0011-183X
Subject:
Nicotiana sylvestris; Nicotiana tabacum; additive gene effects; agronomic traits; backcrossing; chemical composition; cultivars; flowering; flue-cured tobacco; genes; genotype; germplasm; heterosis; inbreeding depression; interspecific hybridization; leaves; models; plant height
Abstract:
... An investigation was conducted to determine the nature of genetic effects in segregating populations produced by crossing selected progenitor species-derived tobacco (Nicotiana tabacum L.) lines to the tobacco cultivar used in the original interspecific hybridization. Two genetically stable tobacco lines developed from interspecific crosses of N. tabacum ✕ N. sylvestris Speg. and Comes and N. taba ...
DOI:
10.2135/cropsci1977.0011183X001700060006x

2. Agronomic, Chemical, and Smoke Characteristics of Flue-cured Tobacco Lines with Different Levels of Total Alkaloids

Author:
James F. Chaplin; L. G. Burk
Source:
Agronomy journal 1984 v.76 no.1 pp. 133-136
ISSN:
0002-1962
Subject:
Nicotiana tabacum; backcrossing; cigarettes; cultivars; dihaploidy; flavor; flowering; flue-cured tobacco; leaves; nicotine; nornicotine; parents; physicochemical properties; plant height; reducing sugars; smoke; taste
Abstract:
... Total alkaloids (predominately nicotine) are important constitutents in flue-cured tobacco (Nicotiana tabacum L.). Due to varying nicotine levels in cigarettes, it is of interest to see what effect varying alkaloid levels in tobacco have on certain agronomic and chemical characteristics of the cured leaf. Experiments were conducted at two locations to develop lines of flue-cured tobacco with diffe ...
DOI:
10.2134/agronj1984.00021962007600010032x

3. Airborne-pollen pool and mating pattern in a hybrid zone between Pinus pumila and P. parviflora var. pentaphylla

Author:
ITO, MEGUMI; SUYAMA, YOSHIHISA; OHSAWA, TAKESHI A.; WATANO, YASUYUKI
Source:
Molecular ecology 2008 v.17 no.23 pp. 5092-5103
ISSN:
0962-1083
Subject:
Pinus pumila; adults; assortative mating; backcrossing; chloroplast DNA; flowering; grains; hybrids; introgression; parents; phenology; pollen; polymerase chain reaction; reproductive isolation; seed trees; seeds; Japan
Abstract:
... The reproductive isolation barriers and the mating patterns among Pinus pumila, P. parviflora var. pentaphylla and their hybrids were examined by flowering phenology and genetic assays of three life stages: airborne-pollen grains, adults and seeds, in a hybrid zone on Mount Apoi, Hokkaido, Japan. Chloroplast DNA composition of the airborne-pollen was determined by single-pollen polymerase chain re ...
DOI:
10.1111/j.1365-294X.2008.03966.x
PubMed:
19120991

4. Alteration of the genomic composition of Solanum nigrum (+) potato backcross derivatives by somatic hybridization: selection of fusion hybrids by DNA measurements and GISH

Author:
Horsman, K.; Gavrilenko, T.; Bergervoet, M.; Huigen, D.J.; Joe, A.T.W.; Jacobsen, E.
Source:
Plant breeding 2001 v.120 no.3 pp. 201-207
ISSN:
0179-9541
Subject:
Solanum nigrum; Solanum tuberosum; interspecific hybridization; backcrossing; somatic hybridization; protoplast fusion; hybrids; flow cytometry; chromosome number; fruit set; flowering; diploidy; tetraploidy; nucleic acid hybridization; genotype
Abstract:
... Fusion experiments were performed with a first (BC1-6738) and a second (BC2-9017) generation backcross hybrid of 6x Solanum nigrum (+) 2x potato somatic hybrids with potato cultivars. Because no progeny was obtained from the BC2 genotypes, alternative approaches were sought to overcome the sexual crossing barrier. Five potato genotypes, one of which contains the hygromycin resistance gene, were us ...
DOI:
10.1046/j.1439-0523.2001.00591.x

5. Assessment of day-neutral backcross populations of cotton using AFLP markers

Author:
Zhong, M.; McCarty, J.C.; Jenkins, J.N.; Saha, S.
Source:
Journal of cotton science 2002 v.6 no.2 pp. -
ISSN:
1524-3303
Subject:
Gossypium hirsutum; cotton; photoperiodism; flowering; cultivars; plant breeding; backcrossing; introgression; genetic distance; genetic markers; amplified fragment length polymorphism
Abstract:
... The cotton (Gossypium hirsutum L.) collection of primitive accessions is underutilized for cotton improvement because they are photoperiodic. Day-neutrality can be achieved by crossing with a day-neutral cultivar and selection in the F2 generation. Our objective was to determine the relationship among four backcross generations and parents using amplified fragment length polymorphism (AFLP) marker ...
Handle:
10113/2844

6. Association and Heritability Studies for Drought Resistance under Varied Moisture Stress Regimes in Backcross Inbred Population of Rice

Author:
R. SELLAMMAL; S. ROBIN; M. RAVEENDRAN
Source:
Rice science 2014 v.21 no.3 pp. 150-161
ISSN:
1672-6308
Subject:
air temperature; backcrossing; canopy; correlation; drought; drought tolerance; flowering; genotype; harvest index; heritability; inflorescences; leaf rolling; osmotic pressure; rice; water stress
Abstract:
... Drought stress is one of the major constraints affecting rice production and yield stability in the rainfed regions. To understand the physiological basis of drought resistance related component traits, we used a backcross inbred population of rice under three kinds of moisture regimes viz., non-stress, moderate (24.48%) and severe stress (73.97%) conditions which reflect the differential response ...
DOI:
10.1016/S1672-6308(13)60177-8

7. The Australian fresh market pineapple breeding program

Author:
G. Sanewski; J. De Faveri
Source:
Acta horticulturae 2017 no.1166 pp. 41-46
ISSN:
0567-7572
Subject:
Phytophthora; backcrossing; breeding programs; cultivars; flowering; food quality; fresh market; genes; industry; parents; pineapples; plant breeders; root rot; seedlings
Abstract:
... The Australian fresh market pineapple breeding program commenced in 1991 with the objective of developing clones more suited to fresh consumption than the industry standard clone, 'Smooth Cayenne'. These early crosses developed approximately 60,000 seedlings from which the 2 cultivars 'Aus-Jubilee' and 'Aus-Festival' have been commercialised. Plant Breeders Rights have been used to protect intelle ...
DOI:
10.17660/ActaHortic.2017.1166.6

8. Backcross Introgression of the Cucumis hystrix Genome Increases Genetic Diversity in U.S. Processing Cucumber

Author:
Delannay, Isabelle Y.; Staub, Jack E.; Chen, Jin Feng
Source:
Journal of the American Society for Horticultural Science 2010 v.135 no.4 pp. 351-361
ISSN:
0003-1062
Subject:
flowering; genetic markers; backcrossing; diploidy; phenology; genetic distance; sex ratio; fruit set; interspecific hybridization; wild relatives; shape; introgression; food processing quality; Cucumis sativus; wide hybridization; cucumbers; plant genetic resources; plant architecture; general combining ability; genetic variation
Abstract:
... The genetic base of commercial cucumber (Cucumis sativus L.) is extremely narrow (about 3%–8% polymorphism). Wide-based crosses within C. sativus [i.e., C. sativus var. sativus x C. sativus var. hardwickii (R.) Alef.] and interspecific hybridization attempts before 1995 have not substantially increased genetic diversity for plant improvement. However, in 1995, an amphidiploid (Cucumis hytivus Chen ...
Handle:
10113/45067

9. Brassica napus lines with rearranged Arabidopsis mitochondria display CMS and a range of developmental aberrations

Author:
M. Leino; R. Teixeira; M. Landgren; K. Glimelius
Source:
Theoretical and applied genetics 2003 v.106 no.7 pp. 1156-1163
ISSN:
0040-5752
Subject:
Arabidopsis thaliana; Brassica napus; backcrossing; calyx; corolla; cytoplasmic male sterility; flowering; hybrids; mitochondria; mitochondrial DNA; mitochondrial genome; nuclear genome; nuclear-cytoplasmic interactions; phenotype; pistil; plastid genome; restriction fragment length polymorphism; somatic hybridization; stamens
Abstract:
... Numerous Brassica napus (+) Arabidopsis thaliana somatic hybrids were screened for male sterility and aberrant flower phenotypes. Nine hybrids were selected and backcrossed recurrently to B. napus. The resulting lines displayed stable maternal inheritance of flower phenotypes. Nuclear and organellar genomes were characterized molecularly using RFLP analysis. No DNA from A. thaliana was found in th ...
DOI:
10.1007/s00122-002-1167-y

10. Characterization of Apomictic BC7 and BC8 Pearl Millet: Meiotic Chromosome Behavior and Construction of an ASGR-carrier Chromosome-specific Library

Author:
M. Singh; J.A. Conner; Y.-J. Zeng; W. W. Hanna; V. E. Johnson; P. Ozias-Akins
Source:
Crop science 2010 v.50 no.3 pp. 892-902
ISSN:
0011-183X
Subject:
flowering; millets; pollen; nucleic acid hybridization; backcrossing; phenology; apomixis; genotype; wild relatives; Pennisetum squamulatum; seed set; embryo sac; Pennisetum glaucum; dominance (genetics); plant genetic resources; meiosis; viability; loci; nucleotide sequences; crossbreds; plant morphology
Abstract:
... Apospory in Pennisetum squamulatum Fresen is inherited as a single-locus dominant trait. Molecular analysis has identified the apospory-specific genomic region (ASGR), a large segment of one chromosome that is necessary and sufficient to confer apomixis. To transfer apospory from P. squamulatum to pearl millet [P. glaucum (L.) R. Br.], advanced backcrosses were generated. Here we report the charac ...
DOI:
10.2135/cropsci2009.05.0263

11. Characterization of inter-varietal chromosome substitution lines of wheat using molecular markers

Author:
K. Pánková; Z. Milec; M. Leverington-Waite; S. Chebotar; J.W. Snape
Source:
Czech journal of genetics and plant breeding v.44 no.1 pp. 22-29
ISSN:
1212-1975
Subject:
aneuploidy; backcrossing; chromosomes; flowering; genes; genetic markers; growth habit; substitution lines; vernalization; wheat
Abstract:
... Several sets of wheat inter-varietal chromosome substitution lines (SLs) have been produced over the last fifty years at the CRI (formerly RICP) in Prague-Ruzyně, based on cytogenetic manipulations using aneuploids. Lines with defined genes have been obtained which significantly influence growth habit and flowering time and these have been used particularly in the study of the genetics and physiol ...
DOI:
10.17221/1329-cjgpb

12. Comparative Mapping of Growth Habit, Plant Height, and Flowering QTLs in Two Interspecific Families of Leymus

Author:
Steven R. Larson; Xiaolei Wu; Thomas A. Jones; Kevin B. Jensen; N. Jerry Chatterton; Blair L. Waldron; Joseph G. Robins; B. Shaun Bushman; Antonio J. Palazzo
Source:
Crop science 2006 v.46 no.6 pp. 2526-2539
ISSN:
0011-183X
Subject:
inflorescences; flowering; alleles; gene interaction; height; Leymus triticoides; rhizomes; quantitative trait loci; interspecific variation; backcrossing; hybrids; linkage groups; phenology; interspecific hybridization; grasses; diameter; chromosome mapping; transgressive segregation; Leymus cinereus; genetic variation
Abstract:
... Leymus cinereus (Scribn. & Merr.) Á. Löve and L. triticoides (Buckley) Pilg. are tall caespitose and short rhizomatous perennial Triticeae grasses, respectively. Circumference of rhizome spreading, proportion of bolting culms, anthesis date, and plant height were evaluated in two mapping families derived from two interspecific hybrids of L. cinereus Acc:636 and L. triticoides Acc:641 accessions, b ...
Handle:
10113/7420
DOI:
10.2135/cropsci2005.12.0472

13. Conservation implications of asymmetric introgression and reproductive barriers in a rare primrose species

Author:
Yongpeng Ma; Tobias Marczewski; Dan Xue; Zhikun Wu; Rongli Liao; Weibang Sun; Jane Marczewski
Source:
BMC plant biology 2019 v.19 no.1 pp. 286
ISSN:
1471-2229
Subject:
Primula; backcrossing; flowering; fruits; herbs; heterostyly; hybrids; indigenous species; introgression; microsatellite repeats; pollen; pollination; rare species; reproductive isolation; seed set
Abstract:
... BACKGROUND: Primula is a large genus of flowering herbs well known for their heterostyly. Currently few natural hybrids are known and reproductive barriers in this genus in the wild have received little attention. However, there is instance of hybridization between rare and widely-spread species, and conservation implications of such situation is poorly understood. In the present study, we investi ...
DOI:
10.1186/s12870-019-1881-0
PubMed:
31253088
PubMed Central:
PMC6599365

14. Controlled and open pollination between Pinus brutia (Ten.) and Pinus halepensis (Mill.) in Israel and hybrid performance

Author:
ANAT MADMONY; GABRIEL SCHILLER; YOSSI MOSHE; GALIT TSABARY; ZVI MENDEL; JOSEPH RIOV
Source:
Israel journal of plant sciences 2003 v.51 no.3 pp. 213-222
ISSN:
0792-9978
Subject:
Matsucoccus josephi; Mediterranean climate; Pinus brutia; Pinus halepensis; backcrossing; clones; environmental factors; flowering; germination; hybrids; open pollination; parents; seedlings; seeds; Israel
Abstract:
... The present study examined the occurrence of open and controlled pollination between Pinus brutia (Ten.) and Pinus halepensis (Mill.) under the environmental conditions of the East Mediterranean climate. Controlled interspecific pollination succeeded only with P. brutia as the maternal parent and P. halepensis as the paternal parent. Open interspecific pollination also occurred under Israeli condi ...
DOI:
10.1560/FNFR-JCUH-3EEA-0UGJ

15. Cultivated Helianthus annuus (Asteraceae) volunteers as a genetic "bridge" to weedy sunflower populations in North America

Author:
Reagon, Michael; Snow, Allison A.
Source:
American journal of botany 2006 v.93 no.1 pp. 127-133
ISSN:
0002-9122
Subject:
Helianthus annuus; sunflower seed; field crops; weeds; gene flow; pollen; seed dispersal; phenotype; flowering; phenology; genetic markers; seedlings; backcrossing; hybridization; Ohio
Abstract:
... In many crops, unharvested seeds can create populations of volunteer plants that increase opportunities for crop-to-wild gene flow. Pollen-mediated gene flow between cultivated and wild sunflower (both Helianthus annuus, Asteraceae) is well documented, but the role of seed dispersal and volunteers has not been investigated. We compared flowering times and other phenotypic traits of volunteers from ...
DOI:
10.3732/ajb.93.1.127

16. Developing Triploid Maples

Author:
Ryan N. Contreras; Tyler C. Hoskins
Source:
Horticulturae 2020 v.6 no.4 pp. -
ISSN:
2311-7524
Subject:
Acer buergerianum; Acer platanoides; Acer tataricum subsp. ginnala; backcrossing; cotyledons; cultivars; diploidy; flora; flowering; growers; land; leaves; managers; mortality; open pollination; ornamental value; pests; pollinators; seedlings; shade trees; temperate zones; tetraploidy; triploidy; urban areas; Norway
Abstract:
... Maples are common street and shade trees throughout the temperate zone. They are widely used for their wide range of ornamental traits and adaptability, particularly to urban settings. Unfortunately, some species such as Acer tataricum ssp. ginnala (Amur maple) and A. platanoides (Norway maple) have escaped cultivation to become pests or in some cases threaten native flora. However, these species ...
DOI:
10.3390/horticulturae6040070

17. Development of apple pre-breeding genotypes highly resistant to fire blight by early flowering

Author:
P. M. Le Roux; H. Flachowsky; M. Jansch; M. Kellerhals; A. Patocchi; M. V. Hanke
Source:
Acta horticulturae 2014 v. no.1048 pp. 55-64
ISSN:
0567-7572
Subject:
Erwinia amylovora; agronomic traits; apples; backcrossing; crop production; cultivars; disease control; flowering; flowers; fruit quality; genetic markers; genotype; loci; microsatellite repeats; parents; quantitative trait loci; seedlings; transgenes
Abstract:
... Fire blight, caused by Erwinia amylovora, is a major concern in apple production since no existing control option has been proven to be completely effective and durable. The use of resistant apple cultivars in apple production could and should be an importance piece of an integrated management of the disease. High levels of resistance to Erwinia amylovora have been found in wild or ornamental appl ...

18. Diversification of maize (Zea mays L.) through teosinte (Zea mays subsp. parviglumis Iltis & Doebley) allelic

Author:
Sneha Adhikari; Anjali Joshi; Amarjeet Kumar; Narendra Kumar Singh
Source:
Genetic resources and crop evolution 2021 v.68 no.7 pp. 2983-2995
ISSN:
0925-9864
Subject:
Zea mays; backcrossing; complementary genes; corn; domestication; duplicate genes; ears; evolution; flowering; gene interaction; genetic variation; germplasm; homozygosity; humans; pollen; protogyny; rivers; selfing; Mexico
Abstract:
... Zea mays ssp. parviglumis is the progenitor of maize and assume to have tolerance against various biotic and abiotic stresses. It grows without human intervention in Southern Mexico at the bank of Balsas river and maintains sufficient genetic diversity that can help in maize diversification and domestication of wild alleles. To develop the uniform near to homozygous line the maize inbred parent DI ...
DOI:
10.1007/s10722-021-01170-z

19. Does sequence polymorphism of FLC paralogues underlie flowering time QTL in Brassica oleracea

Author:
Razi, H.; Howell, E. C.; Newbury, H. J.; Kearsey, M. J.
Source:
Theoretical and applied genetics 2008 v.116 no.2 pp. 179-192
ISSN:
0040-5752
Subject:
Arabidopsis; Brassica oleracea; alleles; backcrossing; confidence interval; flowering; haploidy; introns; linkage groups; parents; quantitative trait loci; stop codon; temporal variation
Abstract:
... Previous locations of flowering time (FT) QTL in several Brassica species, coupled with Arabidopsis synteny, suggest that orthologues of the genes FLC, FY or CONSTANS might be the candidates. We focused on FLC, and cloned paralogous copies in Brassica oleracea, obtained their genomic DNA sequences, and confirmed their locations relative to those of known FT-QTL by genetical mapping. They varied in ...
DOI:
10.1007/s00122-007-0657-3
PubMed:
17938878

20. Dynamic expression of green fluorescent protein and Bacillus thuringiensis Cry1Ac endotaxin in interspecific hybrids and successive backcross generations (BC1 and BC2) between transgenic Brassica napus crop and wild Brassica juncea

Author:
L. Lei; C.N. Stewart Jr; Z.‐X. Tang; W. Wei
Source:
Annals of applied biology 2011 v.159 no.2 pp. 212-219
ISSN:
0003-4746
Subject:
Bacillus thuringiensis; Brassica juncea; Brassica napus var. napus; backcrossing; biosafety; cole crops; flowering; fluorescence; gene expression; gene flow; genetic markers; genotype; green fluorescent protein; greenhouses; hybrids; transgenes
Abstract:
... The persistence and stability of a transgene encoding a Bacillus thuringiensis (Bt) Cry1Ac insecticidal protein was investigated in hybrids between crop Brassica napus and a recurrent wild Brassica juncea population. Interspecific hybrids (F1) and backcross progenies (BC1, BC2) containing green fluorescent protein (GFP) and Bt genes were successfully produced in the greenhouse. Stable Bt toxin lev ...
DOI:
10.1111/j.1744-7348.2011.00486.x

21. Effect of cytoplasmic diversity on post anthesis heat tolerance in wheat

Author:
Shyamal Krisna Talukder; P. V. Vara Prasad; Tim Todd; Md Ali Babar; Jesse Poland; Robert Bowden; Allan Fritz
Source:
Euphytica 2015 v.204 no.2 pp. 383-394
ISSN:
0014-2336
Subject:
backcrossing; chlorophyll; cytoplasm; flowering; genes; greenhouses; growth chambers; heat stress; heat tolerance; isogenic lines; parents; photosystem II; plant breeding; reciprocal crosses; temperature; wheat
Abstract:
... To study the cytoplasmic effects on heat tolerance, the nuclear genomes of ten alloplasmic lines were substituted by four or five backcrosses using ‘Karl 92’, ‘Ventnor’, ‘U1275’ and ‘Jagger’ as the recurrent parent. During the final backcross, reciprocal crosses were made to develop cytoplasmic near isogenic lines. Sixty-eight BC5F1/BC4F1 lines and their parents were evaluated in growth chambers f ...
DOI:
10.1007/s10681-014-1350-7

22. Effects of Hordeum chilense cytoplasm on agronomic traits in common wheat

Author:
Atienza, S.G.; Martín, A.C.; Ramírez, M.C.; Martín, A.; Ballesteros, J.
Source:
Plant breeding 2007 v.126 no.1 pp. 5-8
ISSN:
0179-9541
Subject:
Aegilops; Hordeum chilense; Triticum aestivum; agronomic traits; backcrossing; chloroplasts; field experimentation; flowering; genetic markers; genome; microsatellite repeats; wheat
Abstract:
... The genome of bread wheat, AABBDD, was substituted into the cytoplasm of Hordeum chilense by repeated backcrossing to produce alloplasmic lines. The aim of this work was to investigate the effect of H. chilense cytoplasm on agronomic traits in common wheat. Three cytolines were developed. The alloplasmic nature of these lines was confirmed using chloroplast simple-sequence repeat markers. Each cyt ...
DOI:
10.1111/j.1439-0523.2007.01319.x

23. Effects of drought on agronomic and fiber quality in an introgressed backcross inbred line population of Upland cotton under field conditions

Author:
Abdelraheem Abdelraheem; Nicholas Adams; Jinfa Zhang
Source:
Field crops research 2020 v.254 pp. 107850
ISSN:
0378-4290
Subject:
Gossypium barbadense; Gossypium hirsutum; agronomic traits; backcrossing; correlation; cultivars; drought; drought tolerance; field crops; flowering; genetic variation; germplasm; heritability; highlands; inbred lines; information; introgression; length; lint cotton; lint yield; micronaire; oilseed crops; population; research; seed coat; semiarid zones; weight
Abstract:
... Upland cotton (Gossypium hirsutum) is the most important fiber crop and an important oilseed crop in the world. Developing drought tolerant cultivars is important to sustainable cotton production in arid and semi-arid regions. However, there is a lack of information on genetic variation for drought tolerance in breeding populations. In this study, a backcross inbred line (BIL) Upland population wi ...
DOI:
10.1016/j.fcr.2020.107850

24. Epistatic interactions of three loci regulate flowering time under short and long daylengths in a backcross population of rice

Author:
Gu, Xing-You; Foley, Michael E.
Source:
Theoretical and applied genetics 2007 v.114 no.4 pp. 745-754
ISSN:
0040-5752
Subject:
alleles; backcrossing; flowering; loci; photoperiod; quantitative trait loci; rice; selenium
Abstract:
... The short-day plant rice varies greatly in photoperiod sensitivity (PS) for flowering. The hybrid F₁ from a cross between the day-neutral pure line EM93-1 and the weedy rice accession SS18-2 had stronger PS than SS18-2. Some BC₁ (EM93-1/F₁) segregates were even more sensitive to photoperiod than the F₁, as indicated by later flowering or no flowering after 250 days under a 14-h long daylength. A g ...
DOI:
10.1007/s00122-006-0475-z
PubMed:
17171390

25. Evaluation of F1 and BC1 hybrids of Lilium lancifolium × Asiatic hybrid ‘Chianti’ by morphological analysis and fluorescence in situ hybridization

Author:
Fahad Ramzan; Hyoung Tae Kim; Kyung-ku Shim; Adnan Younis; Yu Hyeon Choi; Yoon-Jung Hwang; Ki-Byung Lim
Source:
Journal of horticultural science & biotechnology 2018 v.93 no.6 pp. 614-624
ISSN:
2380-4084
Subject:
Lilium lancifolium; backcrossing; biotechnology; bulbs; flowering; fluorescence in situ hybridization; genetic traits; genetic variation; horticulture; hybrids; karyotyping; leaves; loci; parents; phenotype; plant height; progeny; ribosomal DNA
Abstract:
... Lilium lancifolium Thunb. exhibits wide genetic diversity and numerous genetic traits within progeny populations. Parent morphology affects the distribution and assortment of progeny phenotypes. In this study, morphological analysis and fluorescence in situ hybridization (FISH) were conducted for cross progeny (F1 and BC1). Results showed that F1-1 hybrids had greater plant height than the parents ...
DOI:
10.1080/14620316.2018.1432296

26. Exploitation of beneficial alleles from maize (Zea mays L.) landraces to enhance performance of an elite variety in water stress environments

Author:
Silvestro Meseka; Abebe Menkir; Kwadwo Obeng-Antwi
Source:
Euphytica 2015 v.201 no.1 pp. 149-160
ISSN:
0014-2336
Subject:
Zea mays; agronomic traits; alleles; backcrossing; corn; corn ears; drought tolerance; dry season; flowering; genotype; grain yield; hybrids; introgression; landraces; recurrent selection; water stress; Nigeria
Abstract:
... Yield losses of maize due to drought stress (DS) in environments with limited rains can reach 100 %. Introgression of favorable alleles from diverse landraces into adapted elite varieties will improve performance, hence reducing losses. The objective of this study was to assess the performance of BC populations under DS and multiple locations (ML) after introgression of alleles from diverse maize ...
DOI:
10.1007/s10681-014-1214-1

27. Expression and heritability of late flowering and other quantitative traits in cultivated×Australian wild mungbean hybrids

Author:
Thuan D. Nguyen; Hang T. T. Vu; L. M. Bielig; R. J. Lawn
Source:
Crop & pasture science 2016 v.67 no.12 pp. 1235-1251
ISSN:
1836-0947
Subject:
additive effect; additive gene effects; autumn; backcrossing; branches; cultivars; early development; flowering; genes; germplasm; growth habit; harvest index; heritability; hybrids; mung beans; phenology; phenotypic correlation; pods; progeny; quantitative traits; seeds; Australia
Abstract:
... The expression and heritability of quantitative traits were examined in four hybrid mungbean populations, developed by crossing two cultivars, Kiloga and Berken, with two Australian wild accessions, ACC 1 and ACC 87. Phenological, morphological, agronomic and pod and seed traits were measured in the parental, F1, F2, and two F1×parent backcross progeny generations. Plants were grown in large pots ...
DOI:
10.1071/CP16297

28. Fine mapping of RBG2, a quantitative trait locus for resistance to Burkholderia glumae, on rice chromosome 1

Author:
Ritsuko Mizobuchi; Hiroyuki Sato; Shuichi Fukuoka; Seiya Tsushima; Masahiro Yano
Source:
Molecular breeding 2015 v.35 no.1 pp. 192
ISSN:
1380-3743
Subject:
Burkholderia glumae; backcrossing; chromosome mapping; chromosomes; cultivars; disease resistance; flowering; grain yield; homozygosity; inbred lines; inflorescences; microsatellite repeats; pathogens; quantitative trait loci; rice; India; Japan
Abstract:
... Bacterial grain rot (BGR), caused by the bacterial pathogen Burkholderia glumae, is a destructive disease of rice. At anthesis, rice panicles are attacked by the pathogen, and the infection causes unfilled or aborted grains, reducing grain yield and quality. Thus, increasing the level of BGR resistance is an important objective for rice breeding. A quantitative trait locus (QTL) on rice chromosome ...
DOI:
10.1007/s11032-015-0192-x
PubMed:
25620876
PubMed Central:
PMC4298652

29. Fine-mapping and validating qHTSF4.1 to increase spikelet fertility under heat stress at flowering in rice

Author:
Changrong Ye; Fatima A. Tenorio; Edilberto D. Redoña; Portia S. Morales–Cortezano; Gleizl A. Cabrega; Krishna S. V. Jagadish; Glenn B. Gregorio
Source:
Theoretical and applied genetics 2015 v.128 no.8 pp. 1507-1517
ISSN:
0040-5752
Subject:
Oryza sativa; backcrossing; chromosomes; crop production; flowering; food production; food security; genes; genotype; global warming; heat stress; heat tolerance; inflorescences; introgression; marker-assisted selection; polymerase chain reaction; quantitative trait loci; rice; single nucleotide polymorphism; temperature
Abstract:
... KEY MESSAGE : This study fine mapped and validated a QTL on rice chromosome 4 that increases spikelet fertility under high temperature (over 37 °C) at the flowering stage. Climate change has a negative effect on crop production and food security. Understanding the genetic mechanism of heat tolerance and developing heat-tolerant varieties is essential to cope with future global warming. Previously, ...
DOI:
10.1007/s00122-015-2526-9

30. Fitness of backcross six of hybrids between transgenic oilseed rape (Brassica napus) and wild radish (Raphanus raphanistrum)

Author:
Gueritaine, G.; Sester, M.; Eber, F.; Chevre, A.M.; Darmency, H.
Source:
Molecular ecology 2002 v.11 no.8 pp. 1419-1426
ISSN:
0962-1083
Subject:
height; plant characteristics; Brassica napus; transgenic plants; Raphanus raphanistrum; wild relatives; weeds; interspecific hybridization; backcrossing; hybrids; herbicide resistance; glufosinate; genes; seedling emergence; seedling growth; mortality; flowering; chromosome number; fields; interspecific competition; male fertility; pollen; gene flow; edge effects
DOI:
10.1046/j.1365-294X.2002.01540.x
PubMed:
12144662

31. Flowering response of rice to photoperiod and temperature: a QTL analysis using a phenological model

Author:
H. Nakagawa; J. Yamagishi; N. Miyamoto; M. Motoyama; M. Yano; K. Nemoto
Source:
Theoretical and applied genetics 2005 v.110 no.4 pp. 778-786
ISSN:
0040-5752
Subject:
Oryza sativa; backcrossing; early development; field experimentation; flowering; inbred lines; loci; models; photoperiod; quantitative trait loci; rice; temperature
Abstract:
... In this study we have attempted to quantify the thermal and photoperiodical responses of rice (Oryza sativa L.) flowering time QTLs jointly by a ‘date-of-planting’ field experiment of a mapping population, and a ‘phenological model’ analysis that separately parameterizes the two responses, based on daily temperature, daily photoperiod and flowering date. For this purpose, the ‘three-stage Beta mod ...
DOI:
10.1007/s00122-004-1905-4

32. Genetic Analysis of Streaked and Abnormal Floret Mutant st-fon

Author:
De-xi CHEN; Ting LI; Guang-lin QU; Wen-juan HUANG; Zhong-quan HE; Shi-gui LI
Source:
Rice science 2013 v.20 no.4 pp. 267-275
ISSN:
1672-6308
Subject:
backcrossing; bundle sheath cells; culms; florets; flowering; genetic techniques and protocols; leaves; meristems; mutants; phenotype; scanning electron microscopes; seedlings; thylakoids; ultrastructure
Abstract:
... A double mutant with streaked leaf and abnormal floret was found and temporarily named streaked leaf and floral organ number mutant (st-fon). For this mutant, besides white streak appeared on culm, leaves and panicles, the number of floral organs increased and florets cracked. The extreme phenotype was that several small florets grew from one floret or branch rachis in small florets extended and d ...
DOI:
10.1016/S1672-6308(13)60132-8

33. The Genetic Variability of Floral and Agronomic Characteristics of Newly-Bred Cytoplasmic Male Sterile Rice

Author:
Raafat El-Namaky
Source:
Agriculture 2018 v.8 no.5 pp. -
ISSN:
2077-0472
Subject:
agronomic traits; backcrossing; commercialization; cytoplasmic male sterility; flowering; genetic variation; grain yield; heterosis; hybrids; maintainer lines; outcrossing; panicles; phenotype; phenotypic variation; plant height; pollen; rice; seed set; spikelets; stigma; tillers; variance; wet season
Abstract:
... Male sterility enabled commercialization of heterosis in rice but low seed set remains a constraint on hybrid dissemination. We evaluated 216 F6 maintainer lines for agronomic and floral characteristics in augmented design and selected 15 maintainer lines, which were testcrossed with IR58025A. Five backcrosses were conducted to transfer cytoplasmic male sterility (CMS) to select maintai ...
DOI:
10.3390/agriculture8050068

34. Genetic dissection of maize phenology using an intraspecific introgression library

Author:
Salvi, Silvio; Corneti, Simona; Bellotti, Massimo; Carraro, Nicola; Sanguineti, Maria C.; Castelletti, Sara; Tuberosa, Roberto
Source:
BMC Plant biology 2011 v.11 pp. -
ISSN:
1471-2229
Subject:
Zea mays; backcrossing; corn; flowering; genetic background; genome; introgression; isogenic lines; phenology; phenotype; phenotypic variation; quantitative trait loci; quantitative traits; temperate zones; Canada
Abstract:
... Background Collections of nearly isogenic lines where each line carries a delimited portion of a donor source genome into a common recipient genetic background are known as introgression libraries and have already shown to be instrumental for the dissection of quantitative traits. By means of marker-assisted backcrossing, we have produced an introgression library using the extremely early-flowerin ...
DOI:
10.1186/1471-2229-11-4
PubMed:
21211047
PubMed Central:
PMC3025946

35. Genetic diversity in a structured family of six generations of ornamental chili peppers (Capsicum Annuum)

Author:
M. F. Nascimento; N. F. F. Nascimento; E. R. Rego; C. H. Bruckner; F. L. Finger; M. M. Rego
Source:
Acta horticulturae 2015 no.1087 pp. 395-401
ISSN:
0567-7572
Subject:
Capsicum annuum; backcrossing; cluster analysis; cultivars; flowering; fruiting; fruits; genetic variation; hot peppers; ornamental plants; pepper; seeds; Brazil
Abstract:
... The genus Capsicum has been used as an ornamental plant, but there are only a few commercial cultivars for this purpose available in Brazil. The aim of this study was to analyze the genetic diversity in a structured family of six generations of ornamental pepper based on quantitative and qualitative data, separately and integrated in the same analysis. These studies are part of the Capsicum breedi ...
DOI:
10.17660/ActaHortic.2015.1087.53

36. Genetic effect of Striga resistance in sorghum genotypes

Author:
Emmanuel Mrema; Hussein Shimelis; Mark Laing
Source:
Euphytica 2017 v.213 no.12 pp. 280
ISSN:
0014-2336
Subject:
Fusarium oxysporum; Striga; additive gene effects; backcrossing; biological control agents; cultivars; experimental design; females; financial economics; flowering; genes; genetic variation; genotype; legumes; males; parasitic plants; parents; plant breeding; seed yield; Tanzania
Abstract:
... Striga is an important parasitic weed causing substantial economic losses in cereal and legume crop production in sub-Saharan Africa. Integrated Striga management approaches such as a combined use of Striga resistant varieties and Fusarium oxysporum f.sp. strigae (FOS), a biocontrol agent of Striga, are an option to control the parasite and to boost sorghum productivity. Understanding host gene ac ...
DOI:
10.1007/s10681-017-2073-3

37. Genetic interactions in the control of flowering time and reproductive structure development in tomato (Solanum lycopersicum)

Author:
Muriel Quinet; Vincent Dielen; Henri Batoko; Marc Boutry; Andrée Havelange; Jean‐Marie Kinet
Source:
new phytologist 2006 v.170 no.4 pp. 701-710
ISSN:
0028-646X
Subject:
Solanum lycopersicum var. lycopersicum; tomatoes; mutants; genetic variation; phenotypic variation; inflorescences; flowering; plant reproduction; leaf development; backcrossing; sequence analysis; plant genetics
Abstract:
... • Different tomato (Solanum lycopersicum) mutants, affected in flowering time, reproductive structure or plant architecture, were crossed to produce double mutants in order to investigate gene interactions in flowering regulation in this autonomous species with a sympodial growth habit. • The compound inflorescence: uniflora, uniflora: self pruning, uniflora: blind, and jointless: uniflora double ...
DOI:
10.1111/j.1469-8137.2006.01717.x
PubMed:
16684232

38. Genetic location and evaluation of chromosomal segments for drought tolerance at flowering stage in maize using selected backcross populations

Author:
Li, Y.; Liu, C.; Shi, Y.; Song, Y.; Wang, T.
Source:
Plant breeding 2009 v.128 no.4 pp. 342-347
ISSN:
0179-9541
Subject:
alleles; backcrossing; chromosomes; corn; crops; drought tolerance; flowering; genetic markers; introgression; water stress
Abstract:
... Development and evaluation of introgression lines have become one of the promising approaches to understanding genetic mechanisms of important traits in crops. In this study, three sets of drought tolerance (DT) selected backcross populations in maize, including two BC₂S₁ populations and one BC₃S₁ population, from a cross of Qi319 and Huangzaosi (recurrent parent) were developed by selecting for s ...
DOI:
10.1111/j.1439-0523.2009.01666.x

39. Genomic clues to the parental origin of the wild flowering cherry Prunus yedoensis var. nudiflora (Rosaceae)

Author:
Ara Cho; Seunghoon Baek; Goon-Bo Kim; Chang-Ho Shin; Chan-Soo Kim; Kyung Choi; Youngje Kang; Hee-Ju Yu; Joo-Hwan Kim; Jeong-Hwan Mun
Source:
Plant biotechnology reports 2017 v.11 no.6 pp. 449-459
ISSN:
1863-5466
Subject:
Prunus yedoensis; backcrossing; cherries; flowering; genes; genetic markers; genomics; genotype; hybrid species; introgression; nucleotide sequences; phylogeny; population structure; progeny; South Korea
Abstract:
... Prunus yedoensis Matsumura is one of the popular ornamental flowering cherry trees native to northeastern Asia, and its wild populations have only been found on Jeju Island, Korea. Previous studies suggested that wild P. yedoensis (P. yedoensis var. nudiflora) is a hybrid species; however, there is no solid evidence on its exact parental origin and genomic organization. In this study, we developed ...
DOI:
10.1007/s11816-017-0465-4

40. Genotype × Environment Interactions in Maize Hybrids from Temperate or Highland Tropical Origin

Author:
C. Giauffret; J. Lothrop; D. Dorvillez; B. Gouesnard; M. Derieux
Source:
Crop science 2000 v.40 no.4 pp. 1004-1012
ISSN:
0011-183X
Subject:
Zea mays; backcrossing; breeding programs; cold tolerance; corn; disease resistance; flowering; genotype; genotype-environment interaction; germplasm; grain yield; heritability; introduced species; leaf area; leaves; marker-assisted selection; plant breeding; temperate zones; temperature; tropical plants
Abstract:
... Exotic germplasm is often used in maize (Zea mays L.) breeding programs. However, the occurrence of genotype × environment interactions (GEIs) may mask the potential utility of exotic material. Our objective was to understand better GEIs for temperate, temperate × highland, and highland tropical maize genotypes cultivated under temperate or highland tropical conditions. We related yield instabilit ...
DOI:
10.2135/cropsci2000.4041004x

41. Grain yield responses to varied level of moisture stress at reproductive stage in an interspecific population derived from Swarna/O. glaberrima introgression line

Author:
Surapaneni Saikumar; C.M.K. Varma; A. Saiharini; G.P Kalmeshwer; K. Nagendra; K. Lavanya; D. Ayyappa
Source:
Netherlands journal of agricultural science 2016 v.78 pp. 111-122
ISSN:
1573-5214
Subject:
backcrossing; biomass; canopy; chlorophyll; drought; drought tolerance; farmers; flowering; genotype; grain yield; harvest index; heritability; inflorescences; introgression; rice; screening; seedlings; selection intensity; temperature; water stress
Abstract:
... Understanding response of plants to drought stress is critical for developing drought tolerant genotypes with stable performance under water limiting conditions. A backcross inbred population derived in the background of a popular variety Swarna, was evaluated for yield and yield attributing traits under reproductive stage and shoot morphological traits at seedling stage under drought stress over ...
DOI:
10.1016/j.njas.2016.05.005

42. Herbivory and fitness components in an introgressive hybrid swarm of Senecio hercynicus and S. ovatus (Compositae, Senecioneae)

Author:
Christoph Oberprieler; Manuela Bog; Bianca Berchtold
Source:
Flora 2016 v.220 pp. 117-124
ISSN:
0367-2530
Subject:
Senecio; alkaloids; backcrossing; extinction; flowering; genotype; germination; herbivores; hybrids; introgression; leaves; linear models; new taxa; phenology; pollen; prediction; regression analysis; seed set; vegetation
Abstract:
... Hybridization among plant species may have considerable evolutionary consequences, from the formation of new taxa to the extinction of species by genetic swamping. The evolutionary fate of a system of hybridizing species is highly dependent on fitness differences between parental and hybrid genotypes. In an introgressed hybrid swarm of the rare Senecio hercynicus and its widely distributed congene ...
DOI:
10.1016/j.flora.2016.03.001

43. Heritabilities and Correlations of Fusarium Ear Rot Resistance and Fumonisin Contamination Resistance in Two Maize Populations

Author:
Leilani A. Robertson; Craig E. Kleinschmidt; Don G. White; Gary A. Payne; Chris M. Maragos; James B. Holland
Source:
Crop science 2006 v.46 no.1 pp. 353-361
ISSN:
0011-183X
Subject:
backcrossing; Zea mays; flowering; grain crops; genetic resistance; phenology; Fusarium fujikuroi; corn; ear rot; phenotypic correlation; plant pathogenic fungi; disease resistance; fumonisins; genotype; genetic variation; heritability
Abstract:
... Fusarium verticillioides (Sacc.) Nirenberg (synonym F. moniliforme Sheldon) (teleomorph: Gibberella moniliformis) and F. proliferatum (Matsushima) Nirenberg (teleomorph: G. intermedia) are fungal pathogens of maize (Zea mays L.) that cause ear rot and contaminate grain with fumonisins, a family of mycotoxins that adversely affect animal and human health. The objective of this study was to estimate ...
Handle:
10113/3529
DOI:
10.2135/cropsci2005.0139

44. Identification of genes that were differentially expressed and associated with fiber yield and quality using cDNA-AFLP and a backcross inbred line population

Author:
M. X. Pang; R. G. Percy; S. E. Hughs; D. C. Jones; J. F. Zhang
Source:
Molecular breeding 2012 v.30 no.2 pp. 975-985
ISSN:
1380-3743
Subject:
cotton; backcrossing; quantitative trait loci; flowering; amplified fragment length polymorphism; loci; complementary DNA; Gossypium hirsutum; selfing; reverse transcriptase polymerase chain reaction; genes; inbred lines; plant ovary; gene expression regulation; sequence homology
Abstract:
... Numerous quantitative trait loci (QTLs) have been identified from segregating hybrid populations between Upland (Gossypium hirsutum) and Pima (G. barbadense) cotton. However, the genetic basis of these QTLs is currently unknown. In the present study, an interspecific backcross inbred line (BIL) population was tested at two locations in 2005 and 2006, and used to identify and isolate polymorphic tr ...
DOI:
10.1007/s11032-011-9682-7

45. Identification of quantitative trait loci contributing to yield and seed quality parameters under terminal drought in barley advanced backcross lines

Author:
Rajesh Kalladan; Sebastian Worch; Hardy Rolletschek; Vokkaliga T. Harshavardhan; Lissy Kuntze; Christiane Seiler; Nese Sreenivasulu; Marion S. Röder
Source:
Molecular breeding 2013 v.32 no.1 pp. 71-90
ISSN:
1380-3743
Subject:
Hordeum vulgare subsp. vulgare; alleles; backcrossing; barley; carbon; drought; drought tolerance; flowering; genetic variation; nitrogen; nitrogen content; potassium iodide; quantitative trait loci; screening; seed quality; seed yield; spraying
Abstract:
... Drought is a major limiting factor for barley production, especially in the primary areas of its cultivation. Wild barley represents a major source of favourable alleles for increasing the genetic variation for multiple traits including resistance to both biotic and abiotic stresses. We used advanced backcross quantitative trait locus (AB-QTL) analysis of a BC3-doubled haploid population developed ...
DOI:
10.1007/s11032-013-9853-9

46. Improvement of the submergence tolerance and the brown planthopper resistance of the Thai jasmine rice cultivar KDML105 by pyramiding Sub1 and Qbph12

Author:
Siriporn Korinsak; Meechai Siangliw; Jate Kotcharerk; Jirapong Jairin; Jonaliza L. Siangliw; Boonrat Jongdee; Grienggrai Pantuwan; Nitat Sidthiwong; Theerayut Toojinda
Source:
Field crops research 2016 v.188 pp. 105-112
ISSN:
0378-4290
Subject:
Nilaparvata lugens; agronomic traits; backcrossing; climate change; cooking quality; cultivars; flowering; genetic background; grain quality; grain yield; introgression; lowlands; marker-assisted selection; paddies; phenotype; quantitative trait loci; rice; submergence; weather; Thailand
Abstract:
... Shifts in weather patterns and increases in the frequency and magnitude of extreme weather events resulting from unfavorable climate change have led to frequent flooding and brown planthopper outbreaks in rice fields, particularly those in rainfed lowland areas in Thailand. The traditional jasmine rice cultivar KDML105, which is popularly grown in rainfed lowland areas in north and northeast Thail ...
DOI:
10.1016/j.fcr.2015.10.025

47. Indirect costs of a nontarget pathogen mitigate the direct benefits of a virus-resistant transgene in wild Cucurbita

Author:
Sasu, Miruna A.; Ferrari, Matthew J.; Du, Daolin; Winsor, James A.; Stephenson, Andrew G.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2009 v.106 no.45 pp. 19067-19071
ISSN:
0027-8424
Subject:
backcrossing; cultivars; plant growth; flowering; wild plants; transgenes; bacterial wilt; gourds; transgenic plants; Cucurbita pepo var. texana; crop damage; Zucchini yellow mosaic virus; plant reproduction; Acalymma; Diabrotica; Erwinia tracheiphila; fruiting; introgression
Abstract:
... Virus-resistant transgenic squash are grown throughout the United States and much of Mexico and it is likely that the virus-resistant transgene (VRT) has been introduced to wild populations repeatedly. The evolutionary fate of any resistance gene in wild populations and its environmental impacts depend upon trade-offs between the costs and benefits of the resistance gene. In a 3-year field study u ...
DOI:
10.1073/pnas.0905106106
PubMed:
19858473
PubMed Central:
PMC2776422

48. Inheritance of Heat Tolerance during Pod Set in Cowpea

Author:
K. O. Marfo; A. E. Hall
Source:
Crop science 1992 v.32 no.4 pp. 912-918
ISSN:
0011-183X
Subject:
backcrossing; Vigna unguiculata; flowering; hybrids; heat tolerance; genotype; inheritance (genetics); heritability; selection criteria; pods; California
Abstract:
... The productivity of cowpea (Vigna unguiculata (L.) Walp.] can be reduced substantially by hot weather during flowering. Inheritance and heritability of tolerance to heat during reproductive development were studied to develop efficient methods for breeding improved cultivars. Heat tolerant (‘Prima’ and TVu 4552) and heat sensitive (Barnbey 23, ‘Magnolia’ and 7964) cowpea genotypes were chosen for ...
DOI:
10.2135/cropsci1992.0011183X003200040015x

49. Inheritance of entire and lobed leaf in Cynara cardunculus L.

Author:
F. S. Lopez Anido; E. A. Martin; S. M. Garcia; I. T. Firpo; E. L. Cointry
Source:
Acta horticulturae 2016 no.1147 pp. 159-162
ISSN:
0567-7572
Subject:
Cynara cardunculus; alleles; artichokes; backcrossing; cardoons; cultivars; early development; flowering; inheritance (genetics); landraces; leaves; mature plants
Abstract:
... In globe artichoke (Cynara cadunculus var. scolymus), the presence of entire leaf type in adult plants is a characteristic of the early Catanesi group, as 'Violet de Provence' and 'Blanca de Tudela', among others. Both of these attributes (i.e., entire leaf and precocity) failed to be transmitted by sexual means. In the cultivated cardoon (Cynara cadunculus var. altilis) some materials also presen ...
DOI:
10.17660/ActaHortic.2016.1147.22

50. Inheritance of photoperiod-induced flowering in three photoperiodic lines of Aeschynomene americana L

Author:
Deren, C.W.; Quesenberry, K.H.
Source:
Theoretical and applied genetics 1989 v.78 no.6 pp. 825-830
ISSN:
0040-5752
Subject:
Aeschynomene americana; backcrossing; flowering; epistasis; genetic engineering; genetic techniques and protocols; photoperiod; genetic variation; inheritance (genetics); reciprocal crosses; Florida
DOI:
10.1007/BF00266665
PubMed:
24226013