旱作条件下水陆稻资源的生物量与结实率的差异分析

在旱作条件下对288份水陆稻种资源进行了生物量与结实率鉴定。结果表明：在旱作条件下的营养生长过程中，绝大部分的陆稻材料较水稻材料具有更好的适应性，表现在成熟期具有较大的生物量，但水稻种质资源中也存在一定数量种质成熟期具有较大的生物量。水稻和陆稻的结实率无显著差异。生物量和结实率的相关系数（r）为0．0578，表明在旱作条件下生物量的大小与结实率高低无关。

Analysis on Differences between Rice Germplasm Resources from Lowland and Upland in Drought for Biomass and Seed Set Rate

A total of 288 accessions of rice were evaluated in the study. The results suggested that germplasm resources from upland showed relatively bigger volume of biomass in general. But some lowland rice also showed big volume of biomass in maturity stage. There were no significant differences between two rice germplasm resources in seed set rate of panicles in drought conditions. The correlation between biomass and seed set rate was 0.0578,which was not significant difference, indicating that the germplasm with big biomass may not possess high seed set.