期刊
GENOME
卷 63, 期 1, 页码 27-36出版社
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/gen-2019-0116
关键词
Triticum aestivum L.; recombinant inbred lines; root traits; quantitative trait loci; correlation
资金
- National Key Research and Development Program of China [2016YFD0100100, 2018YFD0200500]
- National Natural Science Foundation of China [31601292, 31570335]
- International Science and Technology Cooperation and Exchanges Program of Science and Technology Department of Sichuan Province [2017HH0076]
- Edanz Group China
A completely developed and vigorous root system can provide a stable platform for aboveground plant organs. To identify loci controlling root traits that could be used in wheat (Triticum aestivum L.) breeding, 199 recombinant inbred lines were used to measure and analyze eight root traits. A total of 18 quantitative trait loci (QTL) located on chromosomes 1A, 2A, 2B, 2D, 4B, 4D, 6A, 7A, and 7B were identified. The phenotypic variation explained by these 18 QTL ranged from 3.27% to 11.75%, and the logarithm of odds scores ranged from 2.50 to 6.58. A comparison of physical intervals indicated several new QTL for root traits were identified. In addition, significant correlations between root and agronomic traits were detected and discussed. The results presented in this study, along with those of previous reports, suggest that chromosomes 2 and 7 likely play important roles in the growth and development of wheat roots.
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