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Different Aluminum Tolerance among Indica, Japonica and Hybrid Rice Varieties

文献类型: 外文期刊

作者: Shu Chang 1 ; Wu Jing-hao 1 ; Shi Gao-ling 1 ; Lou Lai-qing 1 ; Deng Jun-xia 1 ; Wan Jian-lin 2 ; Cai Qing-sheng 1 ;

作者机构: 1.Nanjing Agr Univ, Coll Life Sci, Nanjing 210095, Jiangsu, Peoples R China

2.Jiangxi Acad Agr Sci, Rice Res Inst, Nanchang 518057, Jiangxi, Peoples R China

关键词: aluminum tolerance;rice;japonica;indica;hybrid

期刊名称:RICE SCIENCE ( 影响因子:3.333; 五年影响因子:4.226 )

ISSN: 1672-6308

年卷期: 2015 年 22 卷 3 期

页码:

收录情况: SCI

摘要: Hydroponic cultures were conducted to compare the aluminum (Al) tolerance among different rice (Oryza sativa L.) varieties, including indica, japonica and their hybrids. The results showed that the root growth of rice plant was inhibited in different degrees among Al treated varieties. The Al tolerance observed through relative root elongation indicated that five japonica varieties including Longjing 9, Dharial, LGC 1, Ribenyou and Koshihikari were relatively more tolerant than indica varieties. Most indica varieties in this study, such as Aus 373 and 9311 (awnless), were sensitive to Al toxicity. The Al tolerance of most progenies from japonica x indica or indica x japonica crosses was constantly consistent with indica parents. The differences of Al tolerance among Longjing 9 (japonica), Yangdao 6 (indica) and Wuyunjing 7 (japonica) were studied. Biomass and the malondial-dehyde content of Yangdao 6 under Al exposure decreased and increased, respectively, while there was no significant effect on those of Longjing 9 and Wuyunjing 7. Remarkable reduction of root activities was observed in all these three rice varieties. Significantly higher Al content in roots was found in Yangdao 6 compared to Longjing 9 or Wuyunjing 7.

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