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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
Author(s) -
Cai Hongguang,
Chu Qun,
Gu Riliang,
Yuan Lixing,
Liu Jianchao,
Zhang Xiuzhi,
Chen Fanjun,
Mi Guohua,
Zhang Fusuo
Publication year - 2012
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.2012.01963.x
Subject(s) - agronomy , phosphorus , biology , zea mays , quantitative trait locus , nitrogen , poaceae , bin , inbred strain , phosphorus deficiency , yield (engineering) , grain yield , horticulture , chemistry , mathematics , materials science , biochemistry , organic chemistry , algorithm , metallurgy , gene
With 2 figures and 2 tablesAbstract 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.