Root-ABA1 QTL affects root lodging, grain yield, and other agronomic traits in maize grown under well-watered and water-stressed conditions

doi:10.1093/jxb/erl161

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	Root-ABA1 QTL affects root lodging, grain yield, and other agronomic traits in maize grown under well-watered and water-stressed conditions
	Landi, P.; Sanguineti, M. C.; Liu, C.; Li, Y.; Wang, T. Y.; Giuliani, S.; Bellotti, M.; Salvi, S.; Tuberosa, R.
刊名	JOURNAL OF EXPERIMENTAL BOTANY
	2007
卷号	58 期号:2 页码:319-326
关键词	abscisic acid back-cross-derived lines QTL root lodging Zea mays
ISSN号	0022-0957
DOI	10.1093/jxb/erl161
通讯作者	Landi, P.
英文摘要	A major QTL affecting root traits and leaf ABA concentration was identified in maize (Zea mays L.) and named root-ABA1. For this QTL, back-cross-derived lines (BDLs) homozygous either for the (+) or for the (-) allele increasing or decreasing, respectively, root size and leaf ABA concentration, were developed. This study was conducted to evaluate the QTL effects in various genetic backgrounds and at different water regimes. The (+/+) and (-/-) BDLs were crossed with five or 13 inbred tester lines of different origin, thus producing two sets of test-crosses that were evaluated in Italy and China, respectively. Testing was conducted under both well-watered and water-stressed conditions. In Italy, the test-crosses derived from (+/+) BDLs, as compared with those derived from (-/-) BDLs, showed, across both water regimes, higher leaf ABA concentration (on average 384 versus 351 ng g(-1) DW) and lower root lodging (28.0 versus 52.5%), and lower grain yield under water-stressed conditions (4.88 versus 6.27 Mg ha(-1)). In China, where root lodging did not occur, the test-crosses derived from (+/+) BDLs were less productive at both water regimes (on average, 6.83 versus 7.49 Mg ha(-1)). The lower grain yield of the test-crosses derived from (+/+) BDLs was due to a lower number of ears per plant and to lower kernel weight. The results indicate that the (+) root-ABA1 allele confers not only a consistently lower susceptibility to root lodging but also a lower grain yield, especially when root lodging does not occur.
学科主题	Plant Sciences ; PLANT SCIENCES
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000243992800021
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5695]
专题	作物科学研究所
作者单位	(1)Univ Bologna, Dept Agroenvironm Sci & Technol, I-40127 Bologna, Italy;(2)Xinjiang Acad Agr Sci, Inst Food Crops, Urumqi 830000, Peoples R China;(3)Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Landi, P.,Sanguineti, M. C.,Liu, C.,et al. Root-ABA1 QTL affects root lodging, grain yield, and other agronomic traits in maize grown under well-watered and water-stressed conditions[J]. JOURNAL OF EXPERIMENTAL BOTANY,2007,58(2):319-326.
APA	Landi, P..,Sanguineti, M. C..,Liu, C..,Li, Y..,Wang, T. Y..,...&Tuberosa, R..(2007).Root-ABA1 QTL affects root lodging, grain yield, and other agronomic traits in maize grown under well-watered and water-stressed conditions.JOURNAL OF EXPERIMENTAL BOTANY,58(2),319-326.
MLA	Landi, P.,et al."Root-ABA1 QTL affects root lodging, grain yield, and other agronomic traits in maize grown under well-watered and water-stressed conditions".JOURNAL OF EXPERIMENTAL BOTANY 58.2(2007):319-326.