摘要
试验研究不同早稻品种灌浆期高温胁迫后根系生理差异结果表明,高温对不同水稻品种根系超氧化物歧化酶、过氧化物酶、过氧化氢酶活性均有影响,但对耐热型品种的影响显著小于热敏感品种,耐热型品种在高温胁迫后保护酶活性能较快恢复并接近对照水平;高温胁迫对耐热型水稻品种根系α-萘胺氧化力无影响,但热敏感品种根系氧化力明显下降,故根系α-萘胺氧化力可作为根系耐热指标之一。
The physiological diversity in roots of different early rice varieties under high temperature stress during the period of the grain filling was studied. The results indicate that the roots activities of SOD, POD and CAT are influenced by the high temperature respectively, and the impact on the variety of heat resistance is less than that of the variety of heat sensitivity. Under high temperature stress, the activities of protecting enzyme in roots of the variety of heat resistance can be renewed rapidly to the level of its antitheses. The α-NA oxidation capacity in roots of the variety of heat resistance is not affected by the high temperature stress, but that of the variety of heat sensitivity decreases obviously. Therefore, the α-NA oxidation capacity in roots can be considered as a guide line of the rice roots to high temperature resistance.
出处
《中国生态农业学报》
CAS
CSCD
2006年第3期105-107,共3页
Chinese Journal of Eco-Agriculture
基金
国家自然科学基金项目(30260052)资助
关键词
早稻
高温胁迫
根系
生理差异
Early season rice, High temperature stress, Roots, Physiological difference
