1976年国际水稻研究所从其12200份水稻种质资源中,根据生育期、植株高度、小花不实性、叶色及开花期等的鉴定,选出了六个籼稻耐寒品种。对于这六个品种剑叶抽出时期的耐寒性,日本国立农业试验站在人工气候室条件下进行了检验。 供试材料包括上述六个籼稻品种和日本的三个粳稻耐寒品种。它们是,籼稻:林光 In 1976, the International Rice Research Institute selected 12 indica rice hardy varieties from its 12,200 rice germplasm resources based on the identification of growth stages, plant height, floret littorality, leaf color and flowering stage. For the cold tolerance of the six cultivars during the extraction of flag leaves, the Japanese National Agricultural Experimental Station was tested in the artificial climate chamber. The tested materials included the above six indica varieties and three Japonica japonica hardy varieties. They are, Indica: Lim light