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Dynamic analysis of QTLs for green leaf area duration and green leaf number of main stem in wheat

Shi, Y.G. and Lian, Y. and Shi, H.W. and Wang, S.G. and Fan, H. and Sun, D.Z. and Jing, R.L. (2019) Dynamic analysis of QTLs for green leaf area duration and green leaf number of main stem in wheat. Cereal Research Communications, 47 (2). pp. 250-263. ISSN 0133-3720

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Abstract

Senescence in a wheat (Triticum aestivum L.) leaf is a programmed degeneration process leading to death. During this process, green leaf area duration (GLAD) and green leaf number of main stem (GLNMS) are gradually reduced. In this study, the two traits of Hanxuan10/Lumai14 DH population at different development stages after anthesis were evaluated under rainfed and irrigated conditions, and QTLs were detected. GLAD and GLNMS of two parents and DH population under rainfed condition were less than those under irrigated condition, and close correlations (P < 0 05) were found between GLAD and GLNMS after 25 DAA under both water conditions. GLAD and GLNMS were co-controlled by major and minor genes. QTLs for GLAD were stably expressed at different development stages after anthesis under both water conditions, such as QGlad<sup>22</sup>-1B-1, QGlad<sup>25</sup>-1B-1, QGlad<sup>28</sup>-1B-2 detected under irrigated condition and QGlad<sup>25</sup>-1B-3, QGlad<sup>28</sup>-1B-4 mapped under rainfed condition were located at a 20.7 cM marker interval of Xgwm273-EST122 on 1B chromosome. But QTLs for GLNMS were inducibly and specifically expressed at specific developmental stages after anthesis under both water conditions. The findings provide dynamic genetic information related to wheat senescence.

Item Type: Article
Subjects: S Agriculture / mezőgazdaság > S1 Agriculture (General) / mezőgazdaság általában
Depositing User: Ágnes Sallai
Date Deposited: 19 Jul 2019 08:08
Last Modified: 19 Jul 2019 08:08
URI: http://real.mtak.hu/id/eprint/94518

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