Quantitative trait loci influencing free-threshing habit in tetraploid wheats

被引：0
|
作者：
M.C. Simonetti
M.P. Bellomo
G. Laghetti
P. Perrino
R. Simeone
A. Blanco
机构：
[1] University of Bari,Institute of Plant Breeding
[2] Germplasm Institute,undefined
[3] National Research Council,undefined
来源：
Genetic Resources and Crop Evolution | 1999年 / 46卷
关键词：
free-threshing habit; QTL; RI lines; tetraploid wheat;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study we report the identification and location of Quantitative Trait Loci (QTL) associated with free-threshing character in a set of Recombinant Inbred (RI) lines, derived from a cross between the cv. 'Messapia' of durum wheat and the accession MG4343 of the T. dicoccoides characterised for 259 genetic and molecular markers. Significant differences were detected for threshability in the three environments examined, while the pattern of variability observed was that of a quantitative trait. Regression analysis of marker loci and free-threshing index indicated, as expected, that chromosome 2B and 5A have genetic systems for free-threshing habit. An additional region on chromosome 5AL and on 6BS was shown to have effects on threshability at P ≤ 0.001 and P ≤ 0.01 respectively.
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页码：267 / 271
页数：4
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