干旱地区农业研究Issue(6)：140-145,6.
低温胁迫下转 ICE1基因水稻养分变化的研究
Nutrient changes of transgenic ICE 1 rice under low temperature stress
摘要
Abstract
Using two transgenic ICE1 lines (T4-8 and T4-9)and normal cultivar (Kenjian 10)as test materials, the effects of low temperature stress on nutrient absorption of N,P and K in seedlings of rice (Oryza sativa L .)were in-vestigated by pot experiment .The results showed that the MDA content kept at a low level while the SOD activity kept at a high level in transgenic rice seedlings .The contents of N,P and K in the above-ground part varied little and kept at a high level .In the under-ground part,they showed a slow downward trend,but the decline rate in transgenic lines was less than that in normal cultivar.At the 10th day after low temperature stress,the nitrogen content in under-ground part of T4-8 and T4-9 was 13 .86%higher,the phosphors content of T4-8 and T4-9 was 42 .31%and 50 .00%higher re-spectively,and the potassium content of T4-8 and T4-9 was 85 .7 1%higher,compared with the control .In conclusion, over-expression of ICE 1 gene in rice could enhance cold tolerance,reduce the injury of rice plants and keep a strong ab-sorption nutrient ability in roots under low temperature stress .关键词
低温胁迫/ICE1基因/水稻/养分吸收Key words
low temperature stress/ICE 1 gene/rice/nutrient absorption分类
农业科技引用本文复制引用
张兴梅,孙壮,殷奎德,杨悦..低温胁迫下转 ICE1基因水稻养分变化的研究[J].干旱地区农业研究,2013,(6):140-145,6.基金项目
黑龙江省教育厅资助（11511248）；黑龙江八一农垦大学创新训练项目 （）
