Studies on the Mechanism of Salt Tolerance in Rice (Oryza sativa L.)
Studies on the Mechanism of Salt Tolerance in Rice (Oryza sativa L.)
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水稻耐盐机制的研究（Oryza sativa L.）
DOI：
10.11248/jsta1957.31.92
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
Tadashi Yamaguchi
中科院分区：
文献类型：
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作者：
H. Maegawa;Erabu Usui;N. Uchida;T. Yasuda;Tadashi Yamaguchi
通过比较两个盐敏感性不同的籼稻品种，探讨水稻耐盐机制； Nona Bokra 为耐盐品种，Chiem Chanh 为盐敏感品种。盐化后Nona Bokra的生长量比Chiem Chanh大得多。两个品种的光合速率均随着叶片Na+含量的增加而下降。 150mM NaCl盐化后Nona Bokra叶片Na+含量增加不多，在高盐浓度下仍保持较低水平。结果表明，Nona Bokra具有耐盐性，在培养液中相对较高的NaCl浓度下，最活跃的叶片能够长期保持较低的Na+含量，从而保持较高的光合速率。
The mechanism of salt tolerance in rice was investigated by comparing two indica varieties differing in salt sensitivity; Nona Bokra as a salt tolerant variety and Chiem Chanh as a salt sensitive one . The growth of Nona Bokra after salinization was much greater than that of Chiem Chanh . The photosynthetic rates of both varieties declined with increased leaf Na+ content. The leaf Na+ content of Nona Bokra did not increase very much after salinization with 150mM NaCl, and remained relatively low at high saline levels. The results obtained suggest that Nona Bokra, which is salt tolerant, could maintain in low Na+ content in the most active leaves for a long time at relatively high NaCl concentration in culture solution and consequently could maintain high photosynthetic rate .