Stay-Green Trait in the Post Anthesis Period under High Temperature Conditions in Rice

通过叶片培养，检测了日本稻和世界稻在维持绿色能力方面的不同基因型差异。花期高温条件下，维持能力与维持光合作用和维持生产力有关。叶片颜色受育于F2中，在留绿与不留绿或高产品种与留绿突变体之间分布多样。在岛根县和冲绳县水田条件下，观察了叶片维持和生产力的基因型差异。从我们的研究结果来看，花后期保持绿色性状有望在包括高温在内的多种环境条件下促进水稻产量的提高。

By leaf-section incubation, diverse genotypic differences in green color maintenance capacity were detected in Japanese and World Rice Collection. Under high temperature conditions in the post-anthesis period, the maintenance capacity related with maintenances in photosynthesis and productivity. Leaf color by the incubation in F2 between stay-green and non-stay green or high yielding cultivar and stay-green mutant diversely distributed. Under paddy field conditions in Shimane and Okinawa, genotypic differences in green leaf maintenance and productivity were observed. From our results, stay-green trait in the post anthesis period is expected to contribute to an improvement of rice production under diverse environmental conditions including high temperature.