QTL Mapping of Zeaxanthin Content in Sweet Corn Using Recombinant Inbred Line Population across Different Environments

被引：4

作者：

Zhang, Yahui ^{[1
]}

Tang, Yunqi ^{[1
]}

Jin, Weicai ^{[1
]}

Liu, Yu ^{[1
]}

Li, Guangyu ^{[1
]}

Zhong, Wenhao ^{[1
]}

Huang, Jun ^{[1
]}

Wang, Wenyi ^{[1
]}

机构：

[1] South China Agr Univ, Coll Agr, Guangzhou 510642, Peoples R China

来源：

PLANTS-BASEL | 2023年 / 12卷 / 19期

关键词：

RIL population; zeaxanthin; QTL mapping; sweet corn; LOD; QUANTITATIVE TRAIT LOCI; MACULAR DEGENERATION; CAROTENOID CONTENTS; PROTECTIVE ROLE; ACCUMULATION; LUTEIN; IDENTIFICATION; HYDROXYLASE; PROGRESSION; IMPAIRMENT;

D O I：

10.3390/plants12193506

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Zeaxanthin is a naturally occurring xanthophyll carotenoid obtained from diet sources. Particularly, sweet corn is a major source of dietary zeaxanthin. To investigate the genetic basis of zeaxanthin content regulation in sweet corn, a recombinant inbred line (RIL) population comprising 191 families was constructed using two inbred lines (K44 and F22) with contrasting zeaxanthin content in the grain. The zeaxanthin content in the dry grains of this population grown at different locations was determined using high performance liquid chromatography (HPLC). Subsequently, 175 polymorphic simple sequence repeat (SSR) markers were used to construct a linkage map with a total length of 4322.37 cM and with an average distance of 24.4 cM. A total of eight QTLs located on chromosomes 4, 5, 7, 9, and 10 were detected. The QTLs located in umc1632-umc1401 on chromosome 7 were detected in different environments and explained 11.28-20.25% of the phenotypic variation, implying it is the main QTL controlling zeaxanthin content in the dry grains of sweet corn. Collectively, the present study provides a genetic map and theoretical guidance for the cultivation of sweet corn varieties with a high zeaxanthin content.

引用

页数：12

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