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1. Analysis of meiotic behavior in selecting potential genitors among diploid and artificially induced tetraploid accessions of Brachiaria ruziziensis (Poaceae)

Author:
Pagliarini, Maria Suely; Risso-Pascotto, Claudicéia; de Souza-Kaneshima, Alice Maria; do Valle, Cacilda Borges
Source:
Euphytica 2008 v.164 no.1 pp. 181-187
ISSN:
0014-2336
Subject:
Urochloa ruziziensis; diploidy; tetraploidy; meiosis; germplasm; chromosome aberrations; chromosome segregation; chromosome pairing
Abstract:
... Sexuality is correlated with diploidy and apomixis with polyploidy in the Brachiaria genus. Brachiaria ruziziensis is a key species in Brachiaria breeding due to its obligate sexuality and intrinsic agronomic qualities. Interspecific crosses in the genus became feasible only when a few diploid accessions of B. ruziziensis were artificially tetraploidized and remained sexual. Hybridization has been ...
DOI:
10.1007/s10681-008-9697-2

2. Combining ability of upland cotton, Gossypium hirsutum L., with traits associated with sticky fiber

Author:
Hague, Steve S.; Gannaway, John R.; Boman, Randal K.
Source:
Euphytica 2008 v.164 no.1 pp. 75-79
ISSN:
0014-2336
Subject:
lint cotton; glucose; Gossypium hirsutum; sucrose; general combining ability; genotype; line differences; fiber quality; sugar content; specific combining ability
Abstract:
... Sticky cotton causes severe processing problems at textile mills and can be caused by plant sugars deposited directly from the plant to the lint in the absence of insects. A partial diallel design was used to investigate the combining ability of six upland cotton, Gossypium hirsutum L., genotypes in Lubbock, Texas. Sucrose and glucose on fibers were measured as well as more mechanical fiber proper ...
DOI:
10.1007/s10681-008-9644-2

3. Evaluation of drought tolerance for Atlas fescue, perennial ryegrass, and their progeny

Author:
Wang, Jianping P.; Bughrara, Suleiman S.
Source:
Euphytica 2008 v.164 no.1 pp. 113-122
ISSN:
0014-2336
Subject:
plant breeding; intergeneric hybridization; soil water content; Lolium perenne; drought tolerance; water stress; leaf water potential; genotype; root growth; Festuca; leaf development
Abstract:
... Perennial ryegrass (Lolium perenne L.) has good turf quality but low drought tolerance. Atlas fescue (Festuca mairei) has exceptional drought tolerance but poor turf quality. Intergeneric hybridization between the two grasses would have the potential to develop a plant combining the important turf traits of perennial ryegrass and the improved drought tolerance of Atlas fescue. The objectives of th ...
DOI:
10.1007/s10681-008-9669-6

4. Gene expression analysis of cold treated versus cold acclimated Poncirus trifoliata

Author:
Meng, Shasha; Dane, Fenny; Si, Ying; Ebel, Robert; Zhang, Cankui
Source:
Euphytica 2008 v.164 no.1 pp. 209-219
ISSN:
0014-2336
Subject:
messenger RNA; amplified fragment length polymorphism; complementary DNA; cold stress; acclimation; gene expression; Poncirus trifoliata; plant physiology; gene expression regulation
Abstract:
... Poncirus trifoliata, a close relative of Citrus species, has been widely used as a cold hardy rootstock for citrus production in low-temperature environments. cDNA Amplified Fragment Length Polymorphism (cDNA-AFLP) and Relative Quantification (RQ-PCR) were used to study gene expression of P. trifoliata in response to 10, 24 and 55 h of low temperature (4°C) treatment and a gradual 3 weeks long col ...
DOI:
10.1007/s10681-008-9708-3

5. Genetic diversity among coconut varieties for susceptibility to Cape St Paul Wilt Disease

Author:
Dery, S. K.; Philippe, R.; Baudouin, L.; Quaicoe, R. N.; Nkansah-Poku, J.; Owusu-Nipah, J.; Arthur, R.; Dare, D.; Yankey, N.; Dollet, M.
Source:
Euphytica 2008 v.164 no.1 pp. 1-11
ISSN:
0014-2336
Subject:
Phytoplasma; cultivars; lethal yellowing; hybrids; signs and symptoms (plants); Cocos nucifera; varietal resistance; coconuts; disease resistance; germplasm screening
Abstract:
... The CSPWD is the Ghanaian form of lethal yellowing disease (LYD) of coconut, caused by a phytoplasma and has been active in Ghana since 1932. The paper updates the results of screening trials conducted with 38 pure and hybrid coconut varieties since 1981. Although no variety was found totally resistant, a wide range of susceptibility level was observed: almost all SGD were still unaffected, while ...
DOI:
10.1007/s10681-008-9691-8

6. Genetic variation in F₂ populations and their potential in the improvement of grain yield in tef (Eragrostis tef)

Author:
Tefera, Hailu; Belay, Getachew; Assefa, Kebebew
Source:
Euphytica 2008 v.164 no.1 pp. 105-111
ISSN:
0014-2336
Subject:
Eragrostis tef; grain crops; grain yield; plant breeding; hybrids; genetic variation; genetic improvement; genotype; yield components; inflorescences; heritability
Abstract:
... Tef is a staple cereal of Ethiopia in high demand by consumers. In order to cope up with this high consumer demand, productivity per unit of land must increase through the development and use of high-yielding varieties. To this effect, the National Tef Research Project has long been striving towards the development of high yielding varieties through direct selection from germplasm and concentratin ...
DOI:
10.1007/s10681-008-9655-z

7. Genotype x environment interaction for yield and reaction to leaf spot infections in groundnut in semiarid West Africa. Genotype x interaction and leaf spot resistance in groundnut

Author:
Padi, Francis Kwame
Source:
Euphytica 2008 v.164 no.1 pp. 143-161
ISSN:
0014-2336
Subject:
cultivars; peanuts; Cercosporidium; leaf spot; crop yield; genotype-environment interaction; genotype; disease resistance; savannas; Arachis hypogaea; Cercospora; breeding lines; Ghana
Abstract:
... Capitalizing on the yield potential in available groundnut germplasm, and high stability of kernel yield are important requirements for groundnut producers in semiarid environments. Forty-seven groundnut genotypes were evaluated from 2003 to 2005 at 4 locations representative of the Guinea and Sudan savanna ecologies in Ghana. The objectives were to assess genotypic differences in reaction to earl ...
DOI:
10.1007/s10681-008-9677-6

8. 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

9. Heterosis of purple blotch (Alternaria porri (Ellis) Cif.) resistance, yield and earliness in tropical onions (Allium cepa L.)

Author:
Abubakar, Lawali; Ado, Shehu G.
Source:
Euphytica 2008 v.164 no.1 pp. 63-74
ISSN:
0014-2336
Subject:
cultivars; heterosis; Allium cepa; fungal diseases of plants; early development; Alternaria porri; crossing; maturity stage; crop yield; onions; disease resistance; bulbs; agronomic traits; leaf development; Nigeria
Abstract:
... Five open pollinated onion cultivars Red Creole, Kaharda, Koumassa, Sokoto local and Ori were crossed in a complete diallel and their progenies were evaluated in replicated trials, at Sokoto and Talata Mafara, Nigeria, during the 2004/2005 and 2005/2006 seasons. The experiments were randomised as complete block design with three replications. 30 mls of 10⁻¹ cfu of spore suspension of Alternaria po ...
DOI:
10.1007/s10681-007-9639-4

10. Identification of QTL underlying the resistance of soybean to pod borer, Leguminivora glycinivorella (Mats.) Obraztsov, and correlations with plant, pod and seed traits

Author:
Zhao, Guiyun; Wang, Jian; Han, Yingpeng; Teng, Weili; Sun, Genlou; Li, Wenbin
Source:
Euphytica 2008 v.164 no.1 pp. 275-282
ISSN:
0014-2336
Subject:
quantitative trait loci; plant growth; plant development; Glycine max; microsatellite repeats; seeds; linkage groups; soybeans; crop damage; agronomic traits; chromosome mapping; genetic markers; phenotypic variation; pest resistance; Leguminivora; pods
Abstract:
... Soybean (Glycine max L. Merr.) pod borer (Leguminivora glycinivorella (Mats.) Obraztsov) (SPB) results in severe loss in soybean yield and quality in certain regions of the world, especially in Northeastern China, Japan and Russia. The aim here was to evaluate the inheritance of pod borer resistance and to identify quantitative trait loci (QTL) underlying SPB resistance for the acceleration of the ...
DOI:
10.1007/s10681-008-9728-z

11. Introgression of genes for dry matter content from wild cassava species

Author:
Ojulong, H.; Labuschangne, M.; Herselman, L.; Fregene, M.
Source:
Euphytica 2008 v.164 no.1 pp. 163-172
ISSN:
0014-2336
Subject:
weight; plant breeding; dry matter content; cassava; wild relatives; dry matter accumulation; harvest index; interspecific hybridization; roots; Manihot esculenta
Abstract:
... Cassava cultivars often have poor resistance to biotic stresses and lack good quality traits. Wild species of cultivated crops have frequently been used as an important source of genetic diversity. Cassava breeders are becoming increasingly interested in incorporating genes of wild relatives. In 2000 the International Center for Tropical Agriculture (CIAT) initiated a programme to introgress genes ...
DOI:
10.1007/s10681-008-9685-6

12. Karyotype and meiotic analyses of six species in the subtribe Chrysantheminae

Author:
Li, Jian; Chen, Su-Mei; Chen, Fa-Di; Fang, Wei-Min
Source:
Euphytica 2008 v.164 no.1 pp. 293-301
ISSN:
0014-2336
Subject:
diploidy; cytogenetic analysis; chromosomes; chromosome number; tetraploidy; chromosome pairing; Asteraceae; meiosis
Abstract:
... The karyotypes and meiotic behaviour of six Chrysantheminae species are investigated. Pyrethrum coccineum (Willd.) Worosch. is a tetraploid, while the other five species (Argyranthemum frutescens (L.) Sch.-Bip., Opisthopappus taihangensis (Ling) shih, Crossostephium chinense (L.) Makino, Tanacetum vulgare L. and P. parthenium (L.) Sm.) are all diploids. Their karyotypes consist mainly of median ce ...
DOI:
10.1007/s10681-008-9734-1

13. Male fertility and occurrence of 2n gametes in East African Highland bananas (Musa spp.)

Author:
Ssebuliba, Ruth N.; Tenkouano, Abdou; Pillay, Michael
Source:
Euphytica 2008 v.164 no.1 pp. 53-62
ISSN:
0014-2336
Subject:
Musa; bananas; genotype; diploidy; pollen; plant fertility; varieties; gametogenesis; seed set
Abstract:
... The quantity and quality of pollen produced by a genotype are important attributes to be considered in the selection of male parents for breeding. The objective of this research was to determine the quantity and quality of pollen in 13 selected East African Highland bananas (EAHB) in relation to six diploids commonly used as male parents. Pollen quantity was scored on a scale of 0-6 while the vari ...
DOI:
10.1007/s10681-007-9637-6

14. Nuclear genome size and chromosome analysis in Chenopodium quinoa and C. berlandieri subsp. nuttalliae

Author:
Palomino, Guadalupe; Hernández, Laura Trejo; de la Cruz Torres, Eulogio
Source:
Euphytica 2008 v.164 no.1 pp. 221-230
ISSN:
0014-2336
Subject:
cytogenetic analysis; chromosomes; genome; DNA; chromosome number; flow cytometry; varieties; Chenopodium quinoa; Chenopodium berlandieri
Abstract:
... Cytogenetic characterization by karyotyping and determination of DNA content by flow cytometry of seven cultivated varieties of Chenopodium was performed. Chenopodium quinoa cultivar Barandales and C. berlandieri subsp. nuttalliae cultigens Huauzontle, Quelite and Chia roja showed 2n = 4x = 36, x = 9. Statistically insignificant genome size differences for studied varieties ranged from 2.96 pg/2C ...
DOI:
10.1007/s10681-008-9711-8

15. Performance of various grapefruit (Citrus paradisi Macf.) and pummelo (C. maxima Merr.) cultivars under the dry tropic conditions of Mexico

Author:
Becerra-Rodríguez, Salvador; Medina-Urrutia, Víctor Manuel; Robles-González, Marciano Manuel; Williams, Timothy
Source:
Euphytica 2008 v.164 no.1 pp. 27-36
ISSN:
0014-2336
Subject:
tree growth; weight; cultivars; canopy; diameter; crop quality; tropics; tree trunk; agronomic traits; crop yield; Citrus maxima; color; grapefruit juice; Citrus paradisi; grapefruits; pummelos; Mexico
Abstract:
... Grapefruit growers in the tropics require information about existing and new citrus cultivars with high productivity potential. The objective of this study was to determine the growth, yield, and fruit quality performance of seven pigmented and four white grapefruit cultivars under the dry tropic conditions of Colima, Mexico. The trees were budded on sour orange (Citrus aurantium L.) rootstock and ...
DOI:
10.1007/s10681-007-9627-8

16. Production of a new low-caffeine hybrid coffee and the biochemical mechanism of low caffeine accumulation

Author:
Nagai, Chifumi; Rakotomalala, Jean-Jacques; Katahira, Riko; Li, Yeyun; Yamagata, Katsuya; Ashihara, Hiroshi
Source:
Euphytica 2008 v.164 no.1 pp. 133-142
ISSN:
0014-2336
Subject:
caffeine; plant breeding; hybrids; biosynthesis; chemical constituents of plants; Coffea arabica; Coffea canephora; coffee beans; interspecific hybridization
Abstract:
... The GCAs are new tetraploid interspecific hybrids developed in Madagascar from Coffea eugenioides, C. canephora and C. arabica. Selected GCA having genotype UF1023 contained 0.37% DW caffeine and no detectable theobromine in green beans. Low caffeine accumulation in GCA plants is due mainly to the low biosynthetic activity of purine alkaloids, possibly the extremely weak N-methyltransferase reacti ...
DOI:
10.1007/s10681-008-9674-9

17. Pure-lining of flax (Linum usitatissimum L.) genebank accessions for efficiently exploiting and assessing seed character diversity

Author:
Diederichsen, Axel; Raney, J. Philip
Source:
Euphytica 2008 v.164 no.1 pp. 255-273
ISSN:
0014-2336
Subject:
germplasm; weight; cultivars; line differences; seeds; landraces; fatty acid composition; Linum usitatissimum; linseed; linseed oil; agronomic traits; plant genetic resources; heritability; flax
Abstract:
... Genetic heterogeneity within genebank accessions of a self-pollinating crop has great implications for their preservation, diversity assessment, utilization and exploitation. This study investigated the intra-accession diversity of 38 flax (Linum usitatissimum L.) genebank accessions preserved by Plant Gene Resources of Canada. Seven quantitative seed characters were studied: 1000 seed weight, see ...
DOI:
10.1007/s10681-008-9725-2

18. Quantitative trait loci of frost tolerance and physiologically related trait in faba bean (Vicia faba L.)

Author:
Arbaoui, Mustapha; Link, Wolfgang; Satovic, Zlatko; Torres, Ana-Maria
Source:
Euphytica 2008 v.164 no.1 pp. 93-104
ISSN:
0014-2336
Subject:
Vicia faba; faba beans; quantitative trait loci; frost resistance; inbred lines; crossing; leaves; fatty acid composition; oleic acid; plant breeding; marker-assisted selection; artificial selection; alleles; inheritance (genetics)
Abstract:
... In faba bean, field based winter-hardiness is a complex trait that is significantly correlated to frost tolerance. Frost tolerance could be used to indirectly select for faba bean winter-hardiness. The aim of this study was to identify putative QTL associated with frost tolerance and auxiliary traits and to quantify the efficiency of marker assisted selection. Thus, 101 recombinant inbred lines de ...
DOI:
10.1007/s10681-008-9654-0

19. Reproductive pathways of seed development in apomictic guinea grass (Panicum maximum Jacq.) reveal uncoupling of apomixis components

Author:
Kaushal, P.; Malaviya, D. R.; Roy, A. K.; Pathak, Shalini; Agrawal, A.; Khare, Ambica; Siddiqui, S. A.
Source:
Euphytica 2008 v.164 no.1 pp. 81-92
ISSN:
0014-2336
Subject:
germplasm; plant genetics; parthenogenesis; embryo sac; flow cytometry; Megathyrsus maximus; apomixis; endosperm; plant genetic resources; meiosis; hexaploidy; seed development
Abstract:
... One hundred and sixty accessions representing global germplasm of guinea grass (Panicum maximum Jacq.), an important apomictic (aposporous) fodder crop, were subjected to study on reproductive diversity in apomictic seed development utilizing ovule clearing and flow cytometric seed screen (FCSS). Single seed FCSS of selected 14 tetraploid and five hexaploid lines demonstrated uncoupling between th ...
DOI:
10.1007/s10681-008-9650-4

20. Resistance to bean common mosaic potyvirus strains and its inheritance in some Indian land races of common bean

Author:
Sharma, P. N.; Pathania, Anju; Kapil, Renu; Sharma, Prachi; Sharma, O. P.; Patial, Madhu; Kapoor, Vikas
Source:
Euphytica 2008 v.164 no.1 pp. 173-180
ISSN:
0014-2336
Subject:
Phaseolus vulgaris; beans; landraces; inheritance (genetics); disease resistance; Bean common mosaic virus; plant diseases and disorders; germplasm evaluation; genotype; dominant genes; recessive genes; India
Abstract:
... Evaluation of 397 common bean accessions of diverse origin revealed the presence of effective sources of resistance against bean common mosaic potyvirus strains prevalent in Himachal Pradesh, a north-western Himalayan state of India. 21 accessions viz., KR 7, KR 225, KR 295, KRC 4, KRC 7, KRC 11, KRC 12, KRC 13, KRC 16, KRC 22, Amanda, Black Turtle Soup, Contender, Hans, Great Northern UI 123, Imp ...
DOI:
10.1007/s10681-008-9689-2