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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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nacl胁迫对高粱成熟叶质外体和共质体中na+、ca2+浓度的影响
, PP. 309-312
Keywords: nacl胁迫,高粱,共质体,质外体,na+、ca2+浓度
Abstract:
在c(nacl)＝200mmol/l,t＝14d胁迫条件下,盐敏感品种糖高粱(t)成熟叶生长抑制、含水量的下降和质膜透性均明显大于耐盐品种独角虎(d);盐胁迫下,质外体和共质体中na+浓度明显增加,增加的幅度是质外体大于共质体,t大于d.相反,盐胁迫下质外体和共质体ca2+浓度均明显下降,研究结果表明:质外体na+浓度剧增并没有改变细胞膨压,而可能通过取代质膜上ca2+而破坏质膜选择透性,从而引发盐害.
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