U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject term plant morphology Remove constraint Subject term: plant morphology Subject term heterosis Remove constraint Subject term: heterosis Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
Start Over

Search

36  Search Results

1 - 36 of 36
Number of results to display per page

Search Results

1. Hybrid vigor in rice

Author:
Jones, J.W.
Source:
Agronomy journal 1926 v.18 no.5 pp. 423-428
ISSN:
0002-1962
Subject:
Oryza sativa; variety trials; crop yield; plant morphology; heterosis
Abstract:
... Hybrid vigor has been reported for many species of plants by numerous plant breeders. The rice crop is grown under conditions which makes hybridization in the field difficult. Rice flowers are delicate and easily injured, which makes artificial crossing a difficult process. Data are reported in this paper on the hybrid vigor of F1 plants in comparison with the parental plants for four crosses of r ...
DOI:
10.2134/agronj1926.00021962001800050010x

2. Combining Ability Analyses and Relationships Among Yield, Yield Components, and Architectural Traits in Dry Bean

Author:
James Nienhuis; Shree P. Singh
Source:
Crop science 1986 v.26 no.1 pp. 21-27
ISSN:
0011-183X
Subject:
heterosis; general combining ability; Phaseolus vulgaris; phenotypic correlation; genotype; yield components; continuous cropping; plant morphology; selection criteria
Abstract:
... Among dry bean, Phaseolus vulgarls L., cultivars developed for monoculture cropping systems in the tropics, small-seeded cultivars often yield more than those with medium and large seeds. However, in many countries consumers prefer larger seeds. To develop high-yielding, large-seeded cultivars, knowledge is needed regarding the inheritance of, and relationships among yield, yield components and ar ...
DOI:
10.2135/cropsci1986.0011183X002600010005x

3. Influence of plant density on yield of homozygous and heterozygous winter rapeseed (Brassica napus L.)

Author:
Lefort-Buson, M.; Dattee, Y.
Source:
Euphytica 1986 v.35 no.3 pp. 823-834
ISSN:
0014-2336
Subject:
heterosis; heterozygosity; plant density; crop yield; genotype-environment interaction; Brassica napus; homozygosity; plant morphology; France
DOI:
10.1007/BF00028590

4. Genetic analysis of ecological relevant morphological variability in Plantago lanceolata L. 2. Localisation and organisation of quantitative trait loci

Author:
Wolff, K.
Source:
Theoretical and applied genetics 1987 v.73 no.6 pp. 903-914
ISSN:
0040-5752
Subject:
Plantago lanceolata; environmental factors; genetic techniques and protocols; plant morphology; heterosis; loci; linkage (genetics)
DOI:
10.1007/BF00289397
PubMed:
24241302

5. Induced polygenic changes occurring simultaneously with major gene changes in black henbane (Hyoscyamus niger L.)

Author:
Sharma, J.R.; Lal, R.K.; Mishra, H.O.; Sharma, S.
Source:
Theoretical and applied genetics 1992 v.85 no.4 pp. 445-450
ISSN:
0040-5752
Subject:
Hyoscyamus niger; major genes; mutants; mutagenesis; heterosis; plant development; polygenic inheritance; agronomic traits; general combining ability; plant morphology; phenotype
Abstract:
... Two macromutants [unbranched (Ub) and restricted branched (Rb)], one point mutation [yellow flowered ('Aela')] and two flowering variants (early and late) were isolated in the M2 generation of gamma-irradiated progenies of black henbane (H. niger)--a medicinal plant belonging to family Solanaceae. These major gene changes were coupled with simultaneous changes in several polygenic systems conditio ...
DOI:
10.1007/BF00222326
PubMed:
24197459

6. Isoetes X jeffreyi, hyb. nov., a new Isoetes (Isoetes macrospora X Isoetes riparia) from Quebec, Canada

Author:
Britton, D.M.; Brunton, D.F.
Source:
Canadian journal of botany 1992 v.70 no.3 pp. 447-452
ISSN:
0008-4026
Subject:
Isoetes; aquatic plants; hybrids; heterosis; interspecific hybridization; plant morphology; spores; taxonomy; ultrastructure; Quebec
DOI:
10.1139/b92-059

7. Combining ability of doubled haploids in Coffea canephora P

Author:
Lashermes, P.; Couturon, E.; Charrier, A.
Source:
Plant breeding 1994 v.112 no.4 pp. 330-337
ISSN:
0179-9541
Subject:
heterosis; hybrids; haploidy; general combining ability; height; agronomic traits; Coffea canephora; crop yield; plant morphology; leaves
DOI:
10.1111/j.1439-0523.1994.tb00692.x

8. Comparison of Selection Methods for Dry Bean Populations Derived from Crosses between Gene Pools

Author:
J. S. Beaver; J. D. Kelly
Source:
Crop science 1994 v.34 no.1 pp. 34-37
ISSN:
0011-183X
Subject:
plant breeding; heterosis; seeds; recurrent selection; Phaseolus vulgaris; crop yield; genotype; color; linkage (genetics); plant morphology; selection criteria
Abstract:
... New approaches are needed to broaden the genetic base and improve the yield potential of large-seeded red beans (Phaseolus vulgaris L.). The objectives of this research we~ to compare the effectiveness of two recurrent selection methods to develop indeterminate red-seeded bean populations that yield more than determinate red-seeded varieties. The original base population was produced from crosses ...
DOI:
10.2135/cropsci1994.0011183X003400010005x

9. Heritability and gene effects for root characteristics in peas measured at flowering

Author:
Saleh, G.; Gritton, E.
Source:
Euphytica 1994 v.78 no.3 pp. 185-191
ISSN:
0014-2336
Subject:
root shoot ratio; weight; cultivars; heterosis; flowering; root systems; additive effect; volume; epistasis; crossing; genes; Pisum sativum; heritability; roots; inbreeding depression
DOI:
10.1007/BF00027516

10. Relationship between genetic distance and heterosis for yield and morphological traits in winter canola (Brassica napus L.)

Author:
Ali, M.; Copeland, L.O.; Eilas, S.G.; Kelly, J.D.
Source:
Theoretical and applied genetics 1995 v.91 no.1 pp. 118-121
ISSN:
0040-5752
Subject:
Brassica napus; heterosis; genetic distance; cultivars; crop yield; plant morphology; agronomic traits; pods; branches; seeds; multivariate analysis
Abstract:
... Genetic distance among canola cultivars was estimated through multivariate analysis. Thirty cultivars from various sources were analyzed and clustered based upon five morphological characteristics and yield components--crown diameter, number of branches plant-1, number of pods plant-1, number of seeds pod-1 and yield plant-1--and placed in three distinct clusters. Two cultivars from each cluster w ...
DOI:
10.1007/BF00220867
PubMed:
24169676

11. Heterozygosity and hybrid performance in larch

Author:
Arcade, A.; Faivre-Rampant, P.; Le Guerroue, B.; Paques, L.; Prat, D.
Source:
Theoretical and applied genetics 1996 v.93 no.8 pp. 1274-1281
ISSN:
0040-5752
Subject:
height; plant characteristics; Larix decidua; Larix kaempferi; interspecific hybridization; heterozygosity; genetic distance; genetic markers; heterosis; hybrids; quantitative traits; plant morphology; parents; tree breeding; genetic correlation; stems; random amplified polymorphic DNA technique
Abstract:
... Random Amplified Polymorphic DNAs (RAPD) were used for estimating genetic distances between 12 European larches (Larix decidua) and 12 Japanese larches (L. kaempferi) that were the parents in a factorial mating design. One hundred and eleven fragments were used for establishing genetic distances based on Jaccard's coefficient between parents. Thirteen fragments differentiated the larch species. Th ...
DOI:
10.1007/BF00223460
PubMed:
24162540

12. Vigor and survival of inbred and outbred progeny of Athyrium filix-femina

Author:
Schneller, J.J.; Holderegger, R.
Source:
International journal of plant sciences 1997 v.158 no.1 pp. 79-82
ISSN:
1058-5893
Subject:
Athyrium filix-femina; outcrossing; progeny; vigor; mortality; plant morphology; leaves; length; heterosis; homozygosity; selfing
DOI:
10.1086/297416

13. Genetic Diversity and Heterosis of Spring Wheat Crosses

Author:
Martin A. Fabrizius; Robert H. Busch; Khalil Khan; Linda Huckle
Source:
Crop science 1998 v.38 no.4 pp. 1108-1112
ISSN:
0011-183X
Subject:
heterosis; cultivars; seeds; gliadin; genetic distance; gene interaction; crossing; Triticum aestivum; genetic variation; plant morphology; transgressive segregation; pedigree; Minnesota
Abstract:
... Genetic diversity between parents may contribute positively to both heterosis and transgressive segregation. The objectives of this study were to determine (i) whether genetic diversity in spring wheat (Triticum aestivum L.) affected F₂ bulk heterosis and (ii) whether genetic diversity affected the amount of transgressive segregation among progeny from a cross. Genetic diversity was measured by pe ...
DOI:
10.2135/cropsci1998.0011183X003800040036x

14. Plant hybridization

Author:
LOREN H. RIESEBERG; SHANNA E. CARNEY
Source:
new phytologist 1998 v.140 no.4 pp. 599-624
ISSN:
0028-646X
Subject:
history; heterosis; germ cells; zygote; chromosome mapping; genotype; genomics; natural selection; plant morphology; transgressive segregation; introgression
Abstract:
... Most studies of plant hybridization are concerned with documenting its occurrence in different plant groups. Although these descriptive, historical studies are important, the majority of recent advances in our understanding of the process of hybridization are derived from a growing body of experimental microevolutionary studies. Analyses of artificially synthesized hybrids in the laboratory or gla ...
DOI:
10.1046/j.1469-8137.1998.00315.x

15. Characterization of two interspecific hybrids of Piper

Author:
Sasikumar, B.; Chempakam, B.; George, J.K.; Remashree, A.B.; Devasahayam, S.; Dhamayanthi, K.P.M.; Ravindran, P.N.; Peter, K.V.
Source:
Journal of horticultural science & biotechnology 1999 v.74 no.1 pp. 125-131
ISSN:
1462-0316
Subject:
maternal effect; heterosis; hybrids; insect pests; chromosome number; Piper nigrum; genetic variation; isozymes; interspecific hybridization; plant morphology; pest resistance; leaves

16. Identification of hybrid sterility gene loci in two cytoplasmic male sterile lines in rice

Author:
Devanand, P.S.; Rangaswamy, M.; Ikehashi, H.
Source:
Crop science 2000 v.40 no.3 pp. 640-646
ISSN:
0011-183X
Subject:
crossing; Oryza sativa; loci; cytoplasmic male sterility; genes; inflorescences; heterosis; cultivars; isozymes; genetic markers; plant morphology; genotype
Abstract:
... In hybrid rice (Oryza sativa L.) breeding, spikelet sterility is a barrier to attaining enhanced heterosis in crosses between different groups or subspecies of rice. Our objective was to identify the hybrid sterility gene loci (HSGLi) in two indica cytoplasmic male sterile A lines ('IR58025A' and 'IR62829A') and their corresponding maintainer B lines ('IR58025B' and 'IR62829B'). To detect the HSGL ...

17. Molecular variation and F1 performance among strains of the sweet corn inbred P39

Author:
Tracy, W.F.; Talbert, L.E.; Gerdes, J.T.
Source:
Crop science 2000 v.40 no.6 pp. 1763-1768
ISSN:
0011-183X
Subject:
restriction fragment length polymorphism; weight; heterosis; Zea mays; nucleic acid hybridization; amplified fragment length polymorphism; corn ears; crossing; inbred lines; genetic variation; plant morphology; genetic markers; Wisconsin
Abstract:
... Some maize (Zea mays L.) inbreds produce morphological variants at unexpectedly high frequencies. In some cases, heterosis has been observed in crosses between variants and the progenitor inbred. Causes of such variants and resulting heterosis are unclear. Unique materials for addressing these questions are strains of the sweet corn inbred P39. Several morphologically distinct strains of P39 have ...

18. Physio-morphological characters of F1 hybrids of rice (Oryza sativa L.) in Japonica-Indica crosses

Author:
Sarker, M.A.Z.; Murayama, S.; Ishimine, Y.; Nakamura, I.
Source:
Plant production science 2001 v.4 no.3 pp. 202-209
ISSN:
1343-943X
Subject:
cultivars; heterosis; hybrids; flowering; wide hybridization; Oryza sativa; tillering; leaf area; dry matter accumulation; tillers; plant morphology; container-grown plants
DOI:
10.1626/pps.4.202

19. Physio-morphological characters of F1 hybrids of rice (Oryza sativa L.) in Japonica-Indica crosses

Author:
Sarker, M.A.Z.; Murayama, S.; Ishimine, Y.; Tsuzuki, E.
Source:
Plant production science 2001 v.4 no.3 pp. 196-201
ISSN:
1343-943X
Subject:
cultivars; carbon dioxide; chlorophyll; flowering; heterosis; hybrids; wide hybridization; Oryza sativa; gas exchange; tillering; leaf area index; photosynthesis; plant morphology; container-grown plants
DOI:
10.1626/pps.4.196

20. Relationship between heterosis and genetic distance based on morphological traits and AFLP markers in pepper

Author:
Geleta, L.F.; Labuschagne, M.T.; Viljoen, C.D.
Source:
Plant breeding 2004 v.123 no.5 pp. 467-473
ISSN:
0179-9541
Subject:
heterosis; plant development; hybrids; amplified fragment length polymorphism; Capsicum annuum; genetic distance; genotype; yield components; peppers; genetic variation; plant morphology; genetic markers; quantitative traits
Abstract:
... Genetic diversity is considered as one of the criteria for the selection of parents for hybrid breeding. The present study was undertaken to evaluate genetic divergence among seven pepper cultivars and to assess the relationship between heterosis and parental genetic distance. Twenty-one F1 hybrids and seven parents were evaluated for 15 morphological characters in a greenhouse and in the field. T ...
DOI:
10.1111/j.1439-0523.2004.01017.x

21. Genetic analysis of maize root characteristics in response to low nitrogen stress

Author:
Chun, L.; Mi, G.; Li, J.; Chen, F.; Zhang, F.
Source:
Plant and soil 2005 v.276 no.1-2 pp. 369-382
ISSN:
0032-079X
Subject:
heterosis; Zea mays; plant genetics; root systems; soil nutrients; nitrogen; nutrient availability; corn; physiological response; plant response; uptake mechanisms; genetic variation; biomass; soil-plant interactions
DOI:
10.1007/s11104-005-5876-2

22. Identification of essentially derived varieties obtained from biparental crosses of homozygous lines. II. Morphological distances and heterosis in comparison with simple sequence repeat and amplified fragment length polymorphism data in maize

Author:
Heckenberger, M.; Bohn, M.; Klein, D.; Melchinger, A.E.
Source:
Crop science 2005 v.45 no.3 pp. 1132-1140
ISSN:
0011-183X
Subject:
Zea mays; corn; inbred lines; varieties; crossing; hybrids; microsatellite repeats; genetic markers; amplified fragment length polymorphism; genetic distance; heterosis; plant variety protection; plant morphology; Europe; United States
Abstract:
... In addition to genetic distances (GDs) based on molecular markers, morphological traits and heterosis have been proposed as possible tools to assess the genetic conformity between putative essentially derived varieties (EDVs) and their initial varieties (IVs). However, for maize (Zea mays L.) and other crops, no consensus has been reached regarding methods and thresholds for identification of EDVs ...

23. Nitrogen fertilizer and seed rate effects on Hagberg falling number of hybrid wheats and their parents are associated with alpha-amylase activity, grain cavity size and dormancy

Author:
Kindred, D.R.; Gooding, M.J.; Walker, S.D.; Ellis, R.H.
Source:
Journal of the science of food and agriculture 2005 v.85 no.5 pp. 727-742
ISSN:
0022-5142
Subject:
Triticum aestivum; winter wheat; nitrogen fertilizers; fertilizer application; sowing; plant density; hybrids; crop quality; heterosis; grain sprouting; enzyme activity; alpha-amylase; endosperm; seed dormancy; plant morphology; breadmaking quality
Abstract:
... Field experiments were carried out to assess the effects of nitrogen fertilization and seed rate on the Hagberg falling number (HFN) of commercial wheat hybrids and their parents. Applying nitrogen (200 kg N ha(-1)) increased HFN in two successive years. The HFN of the hybrid Hyno Esta was lower than either of its parents (Estica and Audace), particularly when nitrogen was not applied. Treatment e ...
DOI:
10.1002/jsfa.2025

24. Adaptedness and heterosis in corn and mule hybrids

Author:
Troyer, A.F.
Source:
Crop science 2006 v.46 no.2 pp. 528-543
ISSN:
0011-183X
Subject:
heterosis; Zea mays; hybrids; cultivars; races; animal morphology; mules; corn; gender differences; plant adaptation; genotype; genetic variation; plant morphology; United States
Abstract:
... The origin of U.S. Corn Belt corn (Zea mays L.), heterotic groups, and heterotic patterns becomes less obvious with more cycles of breeding. Heterosis is poorly understood; simple curiosity cries out for more information. I endeavor to shed light on the effect of adaptedness and heterosis on U.S. Corn Belt corn. I relate pertinent happenings in the phenomenal increase in U.S. corn production. I br ...

25. Inheritance of Resistance to Sorghum Shoot Fly, Atherigona soccata

Author:
M. K. Dhillon; H. C. Sharma; B. V. S. Reddy; Ram Singh; J. S. Naresh
Source:
Crop science 2006 v.46 no.3 pp. 1377-1383
ISSN:
0011-183X
Subject:
Sorghum bicolor; grain sorghum; Atherigona soccata; insect pests; plant pests; inheritance (genetics); pest resistance; host plants; cytoplasmic male sterility; restorer lines; plant morphology; trichomes; oviposition; ova; surface roughness; plant breeding; oviposition sites; specific combining ability; heterosis; general combining ability
Abstract:
... The sorghum shoot fly, Atherigona soccata Rond. (Diptera: Muscidae), is one of the most important pests of sorghum [Sorghum bicolor (L.) Moench], and host plant resistance is an important component for the management of this pest. Most of the sorghum hybrids currently under cultivation are based on cytoplasmic male-sterility (CMS). To develop a strategy to develop sorghum hybrids with resistance t ...
DOI:
10.2135/cropsci2005.06-0123

26. Plasticity of growth and sylleptic branchiness in two poplar families grown at three sites across Europe

Author:
Marron, N.; Bastien, C.; Sabatti, M.; Taylor, G.; Ceulemans, R.
Source:
Tree physiology 2006 v.26 no.7 pp. 935-946
ISSN:
0829-318X
Subject:
tree growth; heterosis; hybrids; forest trees; stems; plant architecture; Populus deltoides; branching; genetic variation; Populus trichocarpa; genotype-environment interaction; phenotypic variation; interspecific hybridization; heritability; Populus nigra; France; Italy; England
Abstract:
... Two hybrid poplar maternal half-sib families, resulting from controlled crosses of the female parent Populus deltoides 'S9-2' with P. nigra 'Ghoy' and P. trichocarpa 'V24', were grown at three sites: northern Italy, central France and southern England. Juvenile stem growth traits (height, circumference and volume) and sylleptic branchiness (number of branches, density of branches per unit of stem ...
DOI:
10.1093/treephys/26.7.935
PubMed:
16585039

27. Genetic divergence in parental genotypes and its relation with heterosis, F₁ performance and general combining ability (GCA) in opium poppy (Papaver somniferum L.)

Author:
Yadav, H. K.; Shukla, Sudhir; Singh, S. P.
Source:
Euphytica 2007 v.157 no.1-2 pp. 123-130
ISSN:
0014-2336
Subject:
Papaver somniferum; genotype; genetic variation; heterosis; general combining ability; genetic distance; hybrids; opium alkaloids; medicinal properties; crop yield; plant morphology; height; diameter; seed productivity; pods
Abstract:
... Genetic divergence in 110 population (20 parents and 90 F₁ hybrids) of opium poppy was studied by multivariate analysis. All the entries were grouped in 14 clusters. Out of 20 parents, ten were accumulated in one cluster and rest 10 distributed over seven clusters. Estimates of cluster distance showed that maximum intra-cluster distance was in -cluster IX (25.62) followed by cluster I (22.41), V ( ...
DOI:
10.1007/s10681-007-9402-x

28. Morphological and physiological traits of three major Arabidopsis thaliana accessions

Author:
Passardi, F.; Dobias, J.; Valério, L.; Guimil, S.; Penel, C.; Dunand, C.
Source:
Journal of plant physiology 2007 v.164 no.8 pp. 980-992
ISSN:
0176-1617
Subject:
Arabidopsis thaliana; plant growth; heterosis; root systems; seeds; flowering; ecotypes; trichomes; gene expression regulation; peroxidases; phenotypic variation; genetic variation; callus
Abstract:
... Arabidopsis is currently the most studied organism in plant biology. Its short life cycle and small genome size have rendered it one of the principal model systems. Additionally, numerous large T-DNA insertion mutant collections are available. The advent of molecular biology and the completion of the Arabidopsis genome sequence have contributed to helping researchers discover a large variety of mu ...
DOI:
10.1016/j.jplph.2006.06.008

29. Heterosis in yield, fiber quality, and photosynthesis of okra leaf oriented hybrid cotton (Gossypium hirsutum L.)

Author:
Zhu, Wei; Liu, Kui; Wang, Xue-De
Source:
Euphytica 2008 v.164 no.1 pp. 283-291
ISSN:
0014-2336
Subject:
heterosis; plant growth; hybrids; lint cotton; Gossypium hirsutum; leaf area index; fiber quality; crop yield; agronomic traits; photosynthesis; plant morphology; leaves
Abstract:
... Leaf shape is an important factor affecting canopy structure, photosynthetic characteristics, and yield. Introducing okra leaf shape is considered an important strategy in cotton heterosis breeding. The objective of the study was to evaluate the heterosis in okra leaf cotton hybrid F₁s, which were developed by crossing two sterile near isolines and three restorer near isolines. A normal leaf check ...
DOI:
10.1007/s10681-008-9732-3

30. Characterization and evaluation of two genetic groups and value of intergroup hybrids of Cola nitida (Vent.) Schott and Endlicher

Author:
Sié, R. S.; N'Goran, J. A. K.; Montagnon, C.; Akaffou, D. S.; Cilas, C.; Dagou, S.; Mondeil, F.; Charles, G.; Branchard, M.
Source:
Euphytica 2009 v.167 no.1 pp. 107-112
ISSN:
0014-2336
Subject:
germplasm; heterosis; plant breeding; hybrids; Cola nitida; germplasm evaluation; vigor; isozymes; plant genetic resources; yield components; kola nuts; plant morphology
Abstract:
... The collection of Cola nitida in Côte d'Ivoire was previously classified, based on isozyme markers, into three groups named A, B and C, based on isozymic differences. In this study, morphological traits and several yield components as well as genotypic and phenotypic variabilities for vigour were investigated in groups A and B. We found that group A was characterized by a low vigour and high yield ...
DOI:
10.1007/s10681-008-9867-2

31. Experimental crosses within European Silene latifolia (Caryophyllaceae): intraspecific differentiation, distance effects, and sex ratio

Author:
Hathaway, Louise; Andersson, Stefan; Prentice, Honor C.
Source:
Botany 2009 v.87 no.3 pp. 231-240
ISSN:
1916-2804
Subject:
geographical distribution; heterosis; outbreeding depression; Silene latifolia; seeds; vigor; geographical variation; sex ratio; hybridization; inbreeding; weeds; genetic variation; plant morphology; inbreeding depression
DOI:
10.1139/B08-137

32. Sex inheritance and development of gynoecious hybrids in bitter gourd (Momordica charantia L.)

Author:
Behera, T.K.; Dey, S.S.; Munshi, A.D.; Gaikwad, Ambika B.; Pal, Anand; Singh, Iqbal
Source:
Scientia horticulturae 2009 v.120 no.1 pp. 130-133
ISSN:
0304-4238
Subject:
heterosis; plant breeding; hybrids; sexual systems; gynoecium; cultivars; gourds; gene segregation; sex ratio; fruit set; sex determination; crop yield; inbred lines; plant reproduction; recessive genes; Momordica charantia; plant morphology
Abstract:
... Gynoecism has been used on a large scale in heterosis breeding of cucumber. Production of hybrid seeds in bitter gourd is highly expensive because it is done mainly through hand pollination. But utilization of a gynoecious line would be more economical and easier method. Since gynoecious parent has only female flowers, the open pollinated seeds it produces will be F₁ hybrid. It will reduce the cos ...
DOI:
10.1016/j.scienta.2008.09.006

33. Interspecific hybrids between Dendranthema morifolium (Ramat.) Kitamura and D. nankingense (Nakai) Tzvel. achieved using ovary rescue and their cold tolerance characteristics

Author:
Cheng, Xi; Chen, Sumei; Chen, Fadi; Fang, Weimin; Deng, Yanming; She, Linfang
Source:
Euphytica 2010 v.172 no.1 pp. 101-108
ISSN:
0014-2336
Subject:
ovule culture; heterosis; embryo (plant); flowers; height; Chrysanthemum morifolium; plant genetic resources; color; in vitro studies; interspecific hybridization; wild relatives; plant morphology; cold tolerance; leaves
Abstract:
... Ovary rescue was employed to create six interspecific hybrids from the cross between Dendranthema morifolium (Ramat.) Kitamura ‘rm20-12' (2n = 54) and its wild diploid relative D. nankingense (Nakai) Tzvel. (2n = 18). The morphology of the hybrids differed from that of either parent. The leaf length and width of all three D. morifolium × D. nankingense hybrids exceeded that of the parents, as did ...
DOI:
10.1007/s10681-009-0056-8

34. Variation in an Extra-Long Staple Upland X Medium Staple Upland Cotton F2 Population

Author:
Hague, Steve S.; Smith, C. Wayne; Berger, Greg; Clement, Jenny; Jones, Don C.
Source:
Journal of cotton science 2011 v.15 no.3 pp. 265-270
ISSN:
1524-3303
Subject:
Gossypium hirsutum; breeding programs; breeding value; cotton; cultivars; fiber quality; genotype; germplasm; heritability; heterosis; highlands; lint yield; pedigree; penetrance; plant height; plant morphology; transgressive segregation; Texas
Abstract:
... Development of extra-long staple (ELS) cotton germplasm represented a substantial improvement in upland fiber quality. The objective of this study was to determine the breeding value of an ELS breeding line when crossed to a genotype with average fiber quality. Breeders need to understand how ELS material should be used in a pedigree breeding program to realize the full benefits of the germplasm. ...

35. Morphology and fitness components of wild × crop F₁ hybrids of Sorghum bicolor (L.) in Ethiopia: implications for survival and introgression of crop genes in the wild pool

Author:
Asfaw Adugna; Endashaw Bekele
Source:
Plant genetic resources 2013 v.11 no.3 pp. 196-205
ISSN:
1479-263X
Subject:
Sorghum bicolor; biosafety; crops; cultivars; field experimentation; herbicide resistance; heritability; heterosis; hybrids; introgression; juveniles; mature plants; parents; phenotypic variation; plant fertility; plant morphology; risk; risk assessment; transgenes; transgenic plants; wild plants; Ethiopia
Abstract:
... Natural hybridization between wild/weedy and crop species often results in rare hybrids, which can be more weedy and difficult to control. Moreover, the advent of transgenic crop plants raises questions of biosafety risk assessment on the consequences of rare hybrids with possible fitness enhancing genes on the environment. This study aimed at measuring the fitness components of wild–crop sorghum ...
DOI:
10.1017/S1479262113000129

36. Diversity of morpho-physiological traits in worldwide sweet cherry cultivars of GeneBank collection using multivariate analysis

Author:
Ioannis Ganopoulos; Theodoros Moysiadis; Aliki Xanthopoulou; Maria Ganopoulou; Evangelia Avramidou; Filippos A. Aravanopoulos; Eleni Tani; Panagiotis Madesis; Athanasios Tsaftaris; Konstantinos Kazantzis
Source:
Scientia horticulturae 2015 v.197 pp. 381-391
ISSN:
0304-4238
Subject:
Prunus avium; cluster analysis; cultivars; fruit quality; fruit yield; gene banks; genotype; heterosis; hybridization; multivariate analysis; parents; phenology; plant morphology; principal component analysis
Abstract:
... This study presents an assessment of morpho-physiological diversity for one hundred and forty-six sweet cherry (Prunus avium) cultivars, originating from different countries and maintained in an ex situ GeneBank collection. Data of thirty-five traits, describing phenology, plant morphology, yield and fruit quality were recorded over three years and analyzed using principal component analysis (PCA) ...
DOI:
10.1016/j.scienta.2015.09.061