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Identification of QTLs for plant height, ear height and grain yield in maize (Zea mays L.) in response to nitrogen and phosphorus supply

文献类型： 外文期刊

作者： Cai, Hongguang 1 ; Chu, Qun 1 ; Gu, Riliang 1 ; Yuan, Lixing 1 ; Liu, Jianchao 1 ; Zhang, Xiuzhi 2 ; Chen, Fanjun 1 ; Mi, 1 ;

作者机构： 1.Ctr Resources Environm & Food Secur, MOE, Key Lab Plant Soil Interact, Beijing 100193, Peoples R China

2.Jilin Acad Agr Sci, Res Ctr Agr Environm & Resources, Changchun 130033, Jilin, Peoples R China

关键词： plant height;ear height;grain yield;nitrogen;phosphorus;QTLs;maize (Zea mays L.)

期刊名称：PLANT BREEDING （ 影响因子：1.832； 五年影响因子：1.956 ）

ISSN：

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收录情况： SCI

摘要： With 2 figures and 2 tables Abstract Plant height (PH), ear height (EH) and the PH/EH ratio have a great effect on plant lodging in maize (Zea mays L.) under intensive cropping systems. To understand the genetic mechanisms controlling PH, EH and the PH/EH ratio in response to nitrogen (N) or phosphorus (P) supply, a set of 218 recombinant inbred lines (RILs) was used to evaluate PH, EH, PH/EH ratio and grain yield (GY) and grain yield components under low N, low P and normal N and P supply (NP). A total of 100 QTLs (quantitative trait loci) were detected for the traits investigated. Several QTLs were found to be associated with PH (bin 1.06/1.07) only, both PH and EH (umc1692 at bin 5.01/5.03; umc2313-umc1006 at bin 6.02) and the PH/EH ratio (bnlg1484-bnlg1866 at bin 1.03; umc1164-um1757 at bin 4.01) which was also associated with grain yield. N- or P-inducible QTLs for PH, EH and the PH/EH ratio were found in both years and are sensitive to weather conditions.

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