The evaluation system for the synchronicity in grain growth in a rice panicle and detection of related QTLs

以开花后10天左右的穗为材料，用碘-碘化钾溶液染色小穗，可以很好地评价穗粒生长的同步性。籽粒生长的同步性受温度和辐射水平的影响，并可能与籽粒内源阿坝水平有关。在Koshihikari/Kasalath的染色体片段代换系中，有几个品系表现出较低的籽粒生长同步性，这是提高籽粒灌浆的理想性状，并分析了籽粒生长同步性与籽粒灌浆率之间的关系。

The synchronicity in grain growth in a panicle was well evaluated by staining spikelets with iodine-potassium iodine solution using the panicle about 10 days after flowering. The synchronicity in grain growth was affected by temperature and radiation levels and was possibly associated with the endogenous ABA level in the grain. In the chromosome segment substitution lines between Koshihikari/Kasalath, several lines showed specifically low The synchronicity in grain growth, which is hopefully a desired traits in improving grain filling and the association between the synchronicity in grain growth and grain filling percentage was analyzed.