Journal Article10.1007/S10681-012-0630-3
Mapping quantitative trait loci for cottonseed oil, protein and gossypol content in a Gossypium hirsutum × Gossypium barbadense backcross inbred line population
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TL;DR: This research represents the first report using a permanent advanced backcross inbred population of an interspecific hybrid population to identify QTLs for seed quality traits in cotton in three environments.
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Abstract: Cotton is one of the most important oil-producing crops and the cottonseed meal provides important protein nutrients as animal feed. However, information on the genetic basis of cottonseed oil and protein contents is lacking. A backcross inbred line (BIL) population from a cross between Gossypium hirsutum as the recurrent parent and G. barbadense was used to identify quantitative trait loci (QTLs) for cottonseed oil, protein, and gossypol contents. The BIL population of 146 lines together with the two parental lines was tested in the same location for three years in China. Based on a genetic map of 392 SSR markers and a total genetic distance of 2,895.2 cM, 17 QTLs on 12 chromosomes for oil content, 22 QTLs on 12 chromosomes for protein content and three QTLs on two chromosomes for gossypol content were detected. Seed oil content was significantly and negatively correlated with seed protein content, which can be explained by eight QTLs for both oil and protein contents co-localized in the same regions but with opposite additive effects. This research represents the first report using a permanent advanced backcross inbred population of an interspecific hybrid population to identify QTLs for seed quality traits in cotton in three environments.
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Citations
•Journal Article
Empirical threshold values for quantitative trait mapping.
TL;DR: In this paper, an empirical method based on the concept of permutation test is proposed for estimating threshold values that are tailored to the experimental data at hand, which is demonstrated using two real data sets derived from F(2) and recombinant inbred plant populations.
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A comprehensive meta QTL analysis for fiber quality, yield, yield related and morphological traits, drought tolerance, and disease resistance in tetraploid cotton.
TL;DR: This study combines two previous meta-analysis studies and adds all other currently available QTL studies, making it the most comprehensiveMeta-analysis study in cotton to date.
A comparative meta-analysis of QTL between intraspecific Gossypium hirsutum and interspecific G. hirsutum × G. barbadense populations.
Joseph I. Said,Mingzhou Song,Hantao Wang,Zhongxu Lin,Xianlong Zhang,David D. Fang,Jinfa Zhang +6 more
TL;DR: There are some universal QTL regions in the cultivated tetraploid cotton which remain consistent and some regions which differ between population types, elucidates the similarities and differences in QTL clusters and hotspots between intraspecific and interspecific populations.
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Cotton QTLdb: a cotton QTL database for QTL analysis, visualization, and comparison between Gossypium hirsutum and G. hirsutum × G. barbadense populations
TL;DR: The CottonQTLdb database provides cotton geneticist and breeders with statistical data on cotton QTL previously identified and provides a visualization tool to view QTL positions on chromosomes.
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Genetics, Breeding, and Marker-Assisted Selection for Verticillium Wilt Resistance in Cotton
TL;DR: There is an urgent need for the development of better plant inoculation and screening methods, and for more molecular mapping studies to discern the genetic basis of VW resistance in cotton.
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References
Mapping quantitative trait loci for lint yield and fiber quality across environments in a Gossypium hirsutum × Gossypium barbadense backcross inbred line population.
Jiwen Yu,Ke Zhang,Shuaiyang Li,Shuxun Yu,Honghong Zhai,Man Wu,Xingli Li,Shuli Fan,Meizhen Song,Daigang Yang,Li Yunhai,Jinfa Zhang +11 more
TL;DR: This research represents one of the first reports using a permanent advanced backcross inbred population of an interspecific hybrid population to identify QTLs for fiber quality and yield traits in cotton across diverse environments.
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Mineral Composition of the Grains of Tropical Maize Varieties as Affected by Pre-Anthesis Drought and Rate of Nitrogen Fertilization
TL;DR: The varietal differences in the concentrations ofgrain N and minerals were fairly stable across the levels of N and preanthesis water supply, and the varieties that differed most in the grain N and P concentrations had almost the same endosperm/germ dry weight ratio.
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