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当前位置: 首页 > 文章 > 硝酸还原酶抑制剂和NH_4~+对不同基因型水稻苗期NO_3~-吸收的影响 扬州大学学报(农业与生命科学版) 2004 (1) 61-64
Position: Home > Articles > Effects of Nitrate Reductase Inhibitor and Ammonium on Nitrate Uptake by Different Genotypes Rice at Seedling Stage Journal of Yangzhou University(Agricultural and Life Science Edition) 2004 (1) 61-64

硝酸还原酶抑制剂和NH_4~+对不同基因型水稻苗期NO_3~-吸收的影响

作  者：
司江英;汪晓丽;陈平;封克
单  位：
扬州大学环境科学与工程学院
关键词：
水稻;NO-3;NH+4;硝酸还原酶抑制剂
摘  要：
在不同培养方式(水培和土培)下,选择4种不同基因型水稻(常规籼稻、杂交籼稻、常规粳稻、杂交粳稻),研究其苗期NH+3吸收的抑制主要表现在4及硝酸还原酶抑制剂对NO-3吸收的影响。结果表明:土培条件下,NH+4对NO-粳稻上,对杂交粳稻的抑制尤为明显;硝酸还原酶抑制剂对粳稻NO-3吸收的抑制程度大于其对籼稻的抑制。水培条件下,NH+3的吸收;在硝酸还原酶活性(NRA)受抑制后,对杂交粳稻NO-4能较大程度地降低杂交粳稻对NO-3吸收的影响却很小,说明NH+4对NO-3吸收的影响并非完全通过影响硝酸还原酶的活性来完成。
译  名：
Effects of Nitrate Reductase Inhibitor and Ammonium on Nitrate Uptake by Different Genotypes Rice at Seedling Stage
作  者：
SI Jiang-ying, WANG Xiao-li, CHEN Ping, FENG Ke ( Enviro Sci and Engin Coll, Yangzhou Univ, Yangzhou, 225009, China)
关键词：
rice; nitrate; ammonium; nitrate reductase
摘  要：
Four different genotypes rice (conventional indica , hybrid indica, conventional japonica , hybrid japonica) were selected to study the effect of NH~+_4 and nitrate reductase inhibitor on NO~-_3 uptake at seedling stage in nutrient and soil culture. Results indicated that in soil NH~+_4 inhibited NO~-_3 uptake of japonica , especially, hybrid japonica . There were obvious difference in effect of nitrate reductase inhibitor on NO~-_3 uptake by different genotypes rice. Comparing japonica with indica , the former was more influenced than the latter in terms of inhibited degree. In nutrient culture NO~-_3 absorption of hybrid japonica was greatly reduced by NH~+_4. While inhibitor had little effect on NO~-_3 uptake by hybrid japonica , implying that the effect of ammonium on nitrate uptake was not only by affecting nitrate reductase.

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