QTL mapping of agronomically important traits in sorghum (Sorghum bicolor L.)

被引：17

作者：

Bai, Chunming ^{[1
]}

Wang, Chunyu ^{[1
]}

Wang, Ping ^{[1
]}

Zhu, Zhenxing ^{[1
]}

Cong, Ling ^{[1
]}

Li, Dan ^{[1
]}

Liu, Yifei ^{[2
]}

Zheng, Wenjing ^{[1
]}

Lu, Xiaochun ^{[1
]}

机构：

[1] Acad Agr Sci, Liaoning Innovat Ctr, Crops Mol Improvement Lab, Shenyang 110161, Liaoning, Peoples R China

[2] Shenyang Agr Univ, Shenyang 110161, Liaoning, Peoples R China

来源：

EUPHYTICA | 2017年 / 213卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Sorghum; Agronomic traits; Quantitative trait loci (QTLs); Molecular markers; SUGAR-RELATED TRAITS; RICE GRAIN WIDTH; MAJOR QTL; SEED SIZE; GENOME; WEIGHT; ASSOCIATION; POPULATION; ENCODES; YIELD;

D O I：

10.1007/s10681-017-2075-1

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Sorghum is one of the most important cereal crops; it is used to produce feed, sugar, and biofuel. To investigate genetic tradeoffs between grain and stem sugar production, we evaluated plant height, Brix (the percentage of soluble solids in stalk juice), 100-grain weight and flowering time over 3 years in a recombinant inbred line (RIL) population consisting of 189 individuals derived from a cross between the sweet sorghum cultivar 'Rio' and grain sorghum 'BTx623'. We constructed a genetic linkage map (total length, 1418.71 cM; average distance between markers, 11.26 cM), which consisted of 118 simple sequence repeat (SSR) and 8 insertion-deletion (INDEL) markers. A total of 14 QTLs were detected on chromosomes 1, 3, 6, 7, and 9, which included 6 QTLs for plant height; 4 for Brix; and 2 QTLs for each 100-grain weight and flowering time. Eight QTLs were detected at least in 2 years. These results will be useful for future QTL fine mapping and gene mining for these traits, and useful for the improvement of sorghum through molecular marker-assisted selection.

引用

页数：12

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