摘要
东乡野生稻苗期和抽穗开花期的耐寒性表现：比粳稻耐寒性强，尤其苗期耐寒性特强，耐寒性高１个等级。抽穗开花期在连续３ｄ自然低温（１６．９℃、１４．９℃、１６℃的日平均温度），结实率达７０％以上。抽穗结实时间直至１０月３１日，平均结实率２．５％。比籼粳稻耐寒品种结实期长６ｄ左右，但抽穗能结实正常时期与籼粳稻耐寒品种相似。
This study showed that the cold tolerance of Dongxiang Wild Rice at seedlingstage was one scale more than that of Japonica rice. Within successive three days of mean temper-ature as low as l6. 9℃ and l6℃ during the period of heading,the seed-setting rate remainedover 70%. It could flower and head until the end of October,with a mean setting rate of2.5%。The results revealed that the period of heading and setting for Dongxiang Wild Rice was about 6days longer,respectively,than some cold- tolerant Indica and Japonica varieties,while their nor-mal heading and setting stages approximated.
出处
《江西农业学报》
1996年第1期1-6,共6页
Acta Agriculturae Jiangxi
基金
中国水稻科学发展基金
关键词
东乡野生稻
苗期
抽穗期
耐寒性
野生稻
Dongxiang Wild Rice
Seedling stage
Heading stage
Cold tolerance
