Fine mapping of a minor QTL on chromosome 2 controlling flowering time in Brassica napus L

被引：3

作者：

Cai, Dongfang ^{[1
]}

Zhang, Shufen ^{[1
]}

Wang, Jianping ^{[1
]}

He, Junping ^{[1
]}

Yi, Licong ^{[2
]}

Zhu, Jiacheng ^{[1
]}

机构：

[1] Henan Acad Agr Sci, Key Lab Oil Crop Genet Improvement Henan Prov, Key Lab Oil Crops Huang Huaihai Plains, Ind Crops Res Inst,Minist Agr & Rurual Affairs, Zhengzhou 450002, Henan, Peoples R China

[2] Hubei Acad Agr Sci, Inst Cash Crops, Hubei Key Lab Vegetable Germplasm Enhancement & G, Wuhan 430070, Peoples R China

来源：

GENETIC RESOURCES AND CROP EVOLUTION | 2022年 / 69卷 / 03期

关键词：

Brassica napus L; Flowering time; Near-isogenic lines; QTL; Fine mapping; GENOME-WIDE ASSOCIATION; NEAR-ISOGENIC LINES; QUANTITATIVE TRAIT LOCI; HEAD BLIGHT RESISTANCE; MICROSATELLITE MARKERS; GENETIC ARCHITECTURE; PLANT HEIGHT; ARABIDOPSIS; EVOLUTION; SEQUENCES;

D O I：

10.1007/s10722-021-01290-6

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Brassica napus L. is the third most cultivated oil crop in the world. Flowering time is one of the important agronomic traits that affecting crop yield. In this study, we constructed an early flowering near-isogenic line (NIL) NZ-A2, by using an early flowering accession NO.2127 as donor parent and a late flowering accession ZY821 as recurrent parent. Two QTLs, qFTA2.1a and qFTA2.1b, were detected in the A02 chromosome of B. napus, which accounting for 25.4% and 49.1% of the total flowering time variations, respectively. Further fine mapping of the qFTA2.1a delimited it in a chromosome interval with a physic distance of 245 Kb, in which an important flowering gene BnaFT.A2 was identified. The NIL contained the qFTA2.1a locus flowered about 7 days earlier than the late flowering parent ZY821. Thus, this QTL is of great significant to B. napus breeding for varieties with superior maturity.

引用

页码：1137 / 1146

页数：10

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