不同处理对普通野生稻种子萌发及水位对幼苗存活的影响

• 作 者: 刘贵华 周进 王海洋 郭友好
• 机 构: 武汉大学生命科学学院!武汉430072,武汉大学生命科学学院!武汉430072,武汉大学生命科学学院!武汉430072,武汉大学生命科学学院!武汉430072
• 出 处: 武汉植物学研究
• 发表日期: 2000年02期
• 关键词: 普通野生稻 种子发芽率 幼苗存活率

研究了江西东乡和湖南茶陵普通野生稻 ( Oryza rufipogon Griff.)种群的种子在不同处理下的发芽情况 ,以及水位对种子萌发和幼苗存活的影响。结果表明 ,变温处理极显著提高了种子的发芽率 ;去稃和去种皮以及去 1 /4胚乳后种子发芽率极显著提高 ;0～ 5cm水深有利于普通野生稻种子萌发和幼苗存活。 2个种群的种子发芽率有极显著差异 ,表明其种群间已存在遗传差异

The germination of seeds of Oryza rufipogon Griff. Population in Dongxiang, Jiangxi Province and Hunan Province was studied, and the effects of water level on seed germination and seedling survival were studied. The results showed that the germination rate of seeds was significantly increased by temperature-changing treatment. The germination rate of seeds was significantly increased after removing and seed de-plating and 1/4 endosperm. The water depth of 0-5 cm was beneficial to the seed germination and seedling survival of common wild rice. The germination rates of the two populations showed extremely significant differences, indicating that there was genetic difference among the populations