稻桩贮藏同化产物的分配与再生稻腋芽再生率及产量构成的关系

The Relationship Between Distribution of Assimilation Production Stored in Stubble and Ratooning Rate of Axillary Buds and Yield Characteristics of Ratooning Rice

以4个品种为材料，研究了稻桩贮藏同化产物的分配与再生稻腋芽再生率及产量构成的相关关系。结果表明：老桩贮藏同化产物的52％～70％转运到了再生稻体内，其中，穗部占27％以上，茎鞘占14％～26％，叶片占9％左右；老桩贮藏同化产物主要分配在再生稻倒二和倒三节位，两节位总计约占46％～61％；同化产物在再生稻各器官的分配比例与腋芽再生率、产量及所有的产量性状均呈正相关；同化产物在任一节位的分配比例与相应节位腋芽再生率、产量及产量构成因子均呈显著正相关。

Four rice cultivars were used to study the relationship between distribution of assimilation production stored in stubble and ratooning rate of axillary buds and yield characteristics of ratooning rice. The results indicated that： about 52% -70% assimilation production stored in stubble was distributed in ratooning rice. And the distribution proportion in spikes,pedicle sheathes and leaves was more than 27%, 14% - 26% and 9% or so, respectively; About 46% - 61% assimilation production was distributed in the upper second and third nodes of ratooning rice ; The proportions in different parts of ratooning rice were positively correlated with ratooning rate of axillary buds, yield and its components of ratooning rice; The proportion in any node of ratooning rice was significantly positively correlated with ratooning rate of axillary buds, yield and its components of the same node of ratooning rice.