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1. Genetic association of lint yield with its components in cotton chromosome substitution lines

Author:
Wu, Jixiang; Jenkins, Johnie N.; McCarty, Jack C.; Saha, Sukumar; Percy, Richard
Source:
Euphytica 2008 v.164 no.1 pp. 199
ISSN:
0014-2336
Subject:
Gossypium hirsutum; cotton; crop yield; lint cotton; yield components; bolls; substitution lines; Gossypium barbadense; chromosomes; interspecific hybridization; hybrids
Abstract:
... Dissection of the genetic relationship between lint yield and its yield components at the chromosome level may provide an additional avenue for yield enhancement in cotton (Gossypium hirsutum L.). Based on the conditional additive-dominance (AD) genetic model, we investigated the genetic structures of lint yield with its three component traits, lint percentage, boll weight, and boll number, using ...
Handle:
10113/21044
DOI:
10.1007/s10681-008-9705-6

2. 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:
Cocos nucifera; coconuts; Phytoplasma; phytoplasmal diseases; lethal yellowing; signs and symptoms (plants); varieties; disease resistance; varietal resistance; hybrids; cultivars; 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

3. 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

4. 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:
Gossypium hirsutum; cotton; heterosis; leaves; plant morphology; crop yield; fiber quality; lint cotton; photosynthesis; hybrids; leaf area index; plant growth; agronomic traits
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

5. Linkage mapping and genome analysis in a Saccharum interspecific cross using AFLP, SRAP and TRAP markers

Author:
Alwala, Sreedhar; Kimbeng, Collins A.; Veremis, John C.; Gravois, Kenneth A.
Source:
Euphytica 2008 v.164 no.1 pp. 37
ISSN:
0014-2336
Subject:
Saccharum officinarum; Saccharum spontaneum; sugarcane; chromosome mapping; genetic markers; amplified fragment length polymorphism; inheritance (genetics); gene segregation; hybrids; interspecific hybridization; segregation distortion; genome; linkage groups; genetic recombination; chromosome pairing
Abstract:
... Framework genetic linkage maps of two progenitor species of cultivated sugarcane, Saccharum officinarum 'La Striped' (2n = 80) and S. spontaneum 'SES 147B' (2n = 64) were constructed using amplified fragment length polymorphism (AFLP), sequence related amplified polymorphism (SRAP), and target region amplification polymorphism (TRAP) markers. The mapping population was comprised of 100 F₁ progeny ...
Handle:
10113/21045
DOI:
10.1007/s10681-007-9634-9

6. 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:
Coffea canephora; Coffea arabica; Coffea; coffee beans; plant breeding; interspecific hybridization; hybrids; chemical constituents of plants; caffeine; alkaloids; biosynthesis
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