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Development of Gossypium barbadense chromosome segment substitution lines in the genetic standard line TM-1 of Gossypium hirsutum

查看全文 作　　者：WANG Peng DING YeZhang LU QiongXian GUOWangZhen ZHANG [1]TianZhen 高影响力作者 机构地区：[1]National Key Laboratory of Crop Genetics & Germplasm Enhancement, Cotton Research Institute, Nanjing Agricultural University,Nanjing 210095, China高影响力机构 出　　处：《Chinese Science Bulletin》索引2008年第53卷第10期,共6页高影响力期刊 基　　金：the National Natural Science Foundation of China (Grant No. 30730067);Program for Changjiang Scholars and Innovative Research Team in University (Grant No. IRT0432); the 111 Project (Grant No. B08025). 摘　　要：Chromosome segment substitution lines (CSSL) consist of a battery of nearisogenic lines that have been developed and cover the entire genome of some crops. With the exception of one homozygous chromosome segment transferred from a donor parent, the remaining genome of each CSSL line is the same as the recipient parent. It is an ideal material for genome research and particularly QTL mapping. In the present study, we first developed one set of CSSL lines using G. hirsutum acc. TM-1 (the genetic standard), as the recipient parent and G. barbadense cv. Hai7124 as the donor parent using molecular assisted-selection in BC5S1-3 generations. The CSSL consisted of 330 different lines, in which 1-4 different lines had the same or overlapping substituted segments. The genetic length of the substituted segments covered 5271.9 cM with an average segment distance of 10.9 cM, 1.5 times the total genetic length of Upland cotton (3514.6 cM). The substituted segments of each line varied in length, ranging from 3.5 cM for the shortest segment to 23.2 cM in the longest segment. Our CSSL have not yet to cover the entire tetraploid cotton genome, due to the absence of some donor parent interval segments. 关 键 词：棉花 染色体区段取代线 纤维品质 叶面 QTL
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