%0 Journal Article
%T Genetic Dissection of Nonstructural Carbohydrate Accumulation and Translocation in Rice Culms and Leaf Sheaths Under Direct Sowing<br>直播水稻茎鞘非结构碳水化合物积累与转运的遗传剖析
%A 李绍波
%A 章志宏
%A 李绍清
%A 李阳生
%A 朱英国
%J 植物学报
%D 2010
%I 
%X We aimed to understand the genetic basis of nonstructural carbohydrate(NSC) accumulation and translocation in rice culms and leaf sheaths. Quantitative trait loci (QTL) for 5 related traits were mapped with use of a recombinant inbred line derived from a cross between Lemont (japonica var.) and Teqing (indica var.) under direct sowing. Three QTL affecting NSC content at heading and maturity were detected on chromosomes 1, 9 and 12, explaining 13%, 7% and 7%, respectively, of the phenotypic variation. The Teqing alleles increased the trait value at all three QTL. Two QTL for NSC translocation rate were identified on chromosome 12 and accounted for 8% and 14%, respectively, of the total variation.The number of QTL for seed-setting rate and 1000-grain weight were 3 and 4, respectively. The amount of variation explained by the seed-setting rate QTL were 9%, 24% and 6%, and that explained by the 1000-grain weight QTL were 14%, 11%, 12% and 13%. The Lemont allele decreased NSC content at maturity but increased NSC translocation rate, seed-setting rate and 1000-grain weight at the region near RM277 on chromosome 12. The Teqing allele increased both NSC translocation rate and seed-setting rate at the region near OSR20 on chromosome 12, which provides a genetic explanation for the close correlations among the traits.
%K <br>直播
%K 非结构碳水化合物
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=97AE3D0EBF25E42C466FEF50E492F710&aid=01F6702D2A158B0F8779C4F083D60671&yid=140ECF96957D60B2&vid=94E7F66E6C42FA23&iid=CA4FD0336C81A37A&sid=771469D9D58C34FF&eid=6209D9E8050195F5&journal_id=1674-3466&journal_name=植物学报&referenced_num=0&reference_num=23