早晚季不同水稻籽粒灌浆表现及其与耐光氧化特性的关系研究

The performance of rice grain filling and its relationship with characteristics of tolerance to photooxidation in early and late seasons

摘要: 试验研究早晚季不同水稻材料籽粒灌浆特性与耐光氧化反应特性的关系结果表明，耐光氧化反应特性强的适强光生态型水稻品种其达最大灌浆速率的时间较迟，且灌浆生长盛期终止亦迟，各参数在早晚季灌浆结实期保持相对稳定；而不耐光氧化的适弱光生态型品种则反之，其达最大灌浆速率的时间早，且生长盛期结束亦早，各参数在早晚季灌浆结实期稳定性相对较差。

Abstract: The performance of rice grain filling and its relationship with characteristics of tolerance to photooxidation in early and late seasens were studied. The results indicate that the time of maximum grain filling rate and the stopping time of fast grown grain filling are later in the rice cultivars with the adaptation to high light intensity, and every parameter in grain filling period are relatively stable in different seasons. The reverse is true in the rice varieties with sensitivity to photooxidation.