Indices to screen for grain yield and zinc mass concentrations in aerobic rice at different soil-Zn levels

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	Indices to screen for grain yield and zinc mass concentrations in aerobic rice at different soil-Zn levels
	Jiang, W.1,2; Struik, P. C.1; Zhao, M.3; Van Keulen, H.4; Fan, T. Q.5; Stomph, T. J.1
刊名	NJAS-WAGENINGEN JOURNAL OF LIFE SCIENCES
	2008
卷号	55 期号:2 页码:181-197
关键词	breeding low-zinc tolerance Oryza sativa L. yield index zinc efficiency
ISSN号	1573-5214
通讯作者	Jiang, W.
英文摘要	Zinc is an important micronutrient for both crop growth and human nutrition. In rice production, yields are often reduced and Zn mass concentrations in the grains are often low when Zn is in short supply to the crop. This may result in malnutrition of people dependent on a rice-based diet. Plant breeding to enhance low-Zn tolerance might result in higher yields and nutritional quality but requires effective selection criteria embedded in physiological insight into the Zn husbandry of the crop and applicable in field evaluation of advanced breeding material or in screening of existing varieties. Using existing and newly developed low-Zn tolerance indices, this study presents the results of screening experiments carried out in high- and low-Zn soils. Sixteen accessions of aerobic rice were grown under greenhouse conditions to conceptualize the indices and 14 under field conditions to validate the indices. As the differences in soil-Zn levels in these experiments did not result in differences in grain yield, literature data were used from experiments where the soil-Zn level did have an effect on grain yield, to further check the validity of the indices. Several indices were applied to evaluate the genotypic low-Zn tolerance performance in attaining (relatively) high grain yield, high grain-Zn mass concentration, or both. The results indicate that the grain-Zn mass concentration efficiency index is different from the grain yield efficiency index and that the low-Zn tolerance indices identified superior genotypes best. Amongst the indices tested, the low-Zn tolerance index for grain yield and the low-Zn tolerance index for grain-Zn mass concentration were closely correlated with grain yield and grain-Zn mass concentration, respectively. Therefore, the low-Zn tolerance index for grain yield was effective in screening for high stability and high potential of grain yield, and the low-Zn tolerance index for grain-Zn mass concentration was effective for grain-Zn mass concentration under low and high soil-Zn conditions. Genotypic differences in yield and grain-Zn mass concentration were shown to be unrelated and therefore deserve separate attention in breeding programmes. Combining the low-Zn tolerance index for grain yield and the low-Zn tolerance index for grain-Zn mass concentration in a single low-Zn tolerance index was considered but did not appear to be superior to using the two indices separately.
学科主题	Agriculture, Multidisciplinary ; AGRICULTURE, MULTIDISCIPLINARY
语种	英语
出版者	ROYAL NETHERLANDS SOC AGR SCI
WOS记录号	WOS:000256789700007
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5625]
专题	作物科学研究所
作者单位	1.Wageningen Univ, Crop & Weed Ecol Grp, NL-6700 AK Wageningen, Netherlands 2.Qingdao Agr Univ, Crop Cultivat & Physiol Grp, Qingdao, Peoples R China 3.Chinese Acad Agr Sci, Inst Crop Sci, Beijing, Peoples R China 4.Wageningen Univ, Plant Prod Syst Grp, NL-6700 AK Wageningen, Netherlands 5.Inst Peanut Res Shandong, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Jiang, W.,Struik, P. C.,Zhao, M.,et al. Indices to screen for grain yield and zinc mass concentrations in aerobic rice at different soil-Zn levels[J]. NJAS-WAGENINGEN JOURNAL OF LIFE SCIENCES,2008,55(2):181-197.
APA	Jiang, W.,Struik, P. C.,Zhao, M.,Van Keulen, H.,Fan, T. Q.,&Stomph, T. J..(2008).Indices to screen for grain yield and zinc mass concentrations in aerobic rice at different soil-Zn levels.NJAS-WAGENINGEN JOURNAL OF LIFE SCIENCES,55(2),181-197.
MLA	Jiang, W.,et al."Indices to screen for grain yield and zinc mass concentrations in aerobic rice at different soil-Zn levels".NJAS-WAGENINGEN JOURNAL OF LIFE SCIENCES 55.2(2008):181-197.