Evaluation of Aluminum Resistance among Zoysia Willd. Accessions from China

文献类型： 外文期刊

第一作者： Huang, Chun-qiong

作者： Huang, Chun-qiong;Liu, Guo-dao;Bai, Chang-jun

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关键词： zoysiagrass;acidity and aluminum stress;variation analysis;clustering analysis;small-scale liquid culture

期刊名称：HORTSCIENCE （ 影响因子：1.455； 五年影响因子：1.617 ）

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年卷期：

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收录情况： SCI

摘要： Aluminum ion (Al3+) toxicity is a major factor limiting plant production on acid soils. Species of zoysiagrass (Zoysia Willd.) are grown for lawn, turf, and soil conservation, especially in temperate zones. Herein, 46 zoysiagrass accessions obtained from eight provinces in China were evaluated for Al resistance using small-scale liquid culture. Each accession was grown in triplicate in nutrient solutions with 1500 mu M AlCl3 center dot 6H(2)O ( experimental) or without exposure to Al ( control). The mean dry weights of the roots, shoots, and total bodies of the accessions relative to those of the nontreated controls were calculated after 60 days, and showed considerable diversity. Overall, the CV for the shoot, root, and total weights of the Al-treated accessions relative to the nontreated controls were 45.78%, 56.67%, and 42.84%, respectively. A cluster analysis based on Al resistance and subordinate function values revealed that 12 of the 46 zoysiagrass accessions (26.09%) were resistant to Al, 9 (19.57%) were moderately resistant, and 25 (54.35%) were sensitive to Al stress. These 46 zoysiagrass accessions from China have great potential for horticultural breeding and development, and for research into mechanisms that underlie Al resistance.

分类号： S6

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