Response of transgenic rice at germination traits under salt and alkali stress

Response of transgenic rice at germination traits under salt and alkali stress
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转基因水稻在盐碱胁迫下发芽性状的响应

DOI:
10.5897/ajar11.755
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发表时间:
2011-09
影响因子:
--
通讯作者:
薛大伟
薛大伟
中科院分区:
--
文献类型:
--
作者:
薛大伟

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水稻是世界性的谷类作物。盐碱胁迫严重威胁着水稻产量。以转基因水稻及其野生型(日本晴)为材料,用4种不同浓度的NaCl /Na 2CO 3溶液处理,研究了转基因水稻的发芽率、根长、干重等发芽性状。水稻被发现是更敏感的Na 2CO 3比NaCl溶液。发芽率随钠盐浓度的增加而下降。当用1.5%NaCl处理时,只有40%的日本晴和51%的转基因水稻能够存活。日本晴的根长比转基因水稻的根长受到更大的限制。在盐碱胁迫下,转基因水稻的发芽率和早期幼苗生长均优于野生型。   关键词:转基因水稻,盐胁迫,碱胁迫,发芽特性。
Rice is a worldwide cereal crop. Rice yield is severely threatened by saline and alkali stresses. A transgenic rice variety and its wild type (Nipponbare) were treated with four different levels of NaCl / Na2CO3 solutions to study the germination traits (germination percentage, root length, dry weight) of transgenic rice. Rice was found to be more sensitive to Na2CO3 than to NaCl solutions. Germination percentages declined with increasing sodium salts. When treated with 1.5% NaCl, only 40% of Nipponbare and 51% of transgenic rice could survive. The root length of Nipponbare was significantly more restricted than that of transgenic rice. Transgenic rice showed better performance at germination and early seedling growth compared to its wild type under salt and alkali stress.   Key words: Transgenic rice, saline stress, alkali stress, germination traits.
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