Chongqing Engineering Research Center of Speciality Crop Resource, Chongqing Normal University, Chongqing 401331, People's Republic of China.
J Genet. 2021;100.
The present study conducted QTL (quantitative trait locus) mapping using F and F generations derived from a cross between an overwintering cultivated rice Nuodao89-1 and Shuhui527, to identify potential yield component related QTLs. A total of 37 QTLs were detected across all chromosome except chromosome 7, with LOD values ranging from 3.10 to 12.67. Three QTLs including , and were repeatedly detected in both generations. was from Nuodao89-1, a total of 46 functional genes involved in 229 gene ontology terms were identified within its locus. Six QTL clusters were founded and corresponding agronomic traits of those QTLs showed highly significant correlation. Three types of epistatic interaction including 47 epistatic QTL pairs for eight yield component traits were detected, but the epistatic QTLs was not so important in controlling the genetic expression of the yield-related Nuodao89-1 as the additive QTLs. Overall, this research provides a theoretical basis for the mining of yield-related genes from overwintering cultivated rice.
本研究利用越冬栽培稻诺道 89-1 和水稻品种 Shuhui527 杂交产生的 F1 和 F2 代进行 QTL（数量性状位点）作图，以鉴定与潜在产量构成相关的 QTL。除了第 7 号染色体外，所有染色体上共检测到 37 个 QTL，LOD 值范围为 3.10 至 12.67。三个 QTL，包括 、 和 ，在两代中均被重复检测到。 来自诺道 89-1，其位点共鉴定到涉及 229 个基因本体论术语的 46 个功能基因。发现了六个 QTL 簇，这些 QTL 的相应农艺性状表现出高度显著的相关性。检测到三种类型的上位性互作，包括 8 个产量性状的 47 个上位性 QTL 对，但与加性 QTL 相比，上位性 QTL 对诺道 89-1 产量相关基因的遗传表达的控制作用并不那么重要。总体而言，这项研究为挖掘越冬栽培稻的产量相关基因提供了理论基础。
