复粒稻特征特性及复粒发芽机制研究  

Study on Characteristics and Germination Mechanism of Multiple-grain Rice

作　　者：陈云风[1] 曹祖富[1] CHEN Yun-feng;CAO Zu-fu(College of Life Sciences and Resources Environment,Yichun University,Yichun,Jiangxi 336000)

机构地区：[1]宜春学院生命科学与资源环境学院,江西宜春336000

出　　处：《安徽农业科学》2018年第32期24-25,共2页Journal of Anhui Agricultural Sciences

摘　　要：[目的]探究多雌蕊型复粒稻的多米粒的发芽特性及发芽机制。[方法]采用复粒稻谷粒及剥去颖壳的米粒发芽,观察发芽情况,分析复粒稻的发芽机制。[结果]复粒稻中多米粒发芽不完全,生长靠外颖的米粒发芽影响不大,靠内颖的米粒发芽受到一定限制,位于中间米粒基本不能发芽。双粒型、三粒型复粒稻谷粒的平均发芽率分别为6%、2%;而复粒稻谷粒去掉颖壳后,各米粒发芽正常,发芽率均达96%。[结论]复粒稻中多米粒均具有能发芽的潜力,颖壳是制约复粒稻复粒稻多米粒发芽的主要因素。[Objective]To research the germination characteristics and mechanism of multiple-grain rice of multi-pistils type.[Method]Grains of multiple-grain rice and the granules without shells were used for the observation of germination.And the germination mechanism of multiple-grain rice was analyzed.[Result]Germination of multiple grains was not completely.Germination of grains near the outer glume was not greatly affected,while those near the inner glume was restricted,and grains in the middle could basically not germinated.The average germination rates of grains from double-and treble grains were 6%and 2%,respectively.However,after removing the glumes,the granules all could germinated normally,and their germination rates reached 96%.[Conclusion]Grains of multiple-grain rice all had germination potential,and glumes were the major factor restricting the germiantion of multiple-grain rice.

关 键 词：复粒稻 特征 发芽率 颖壳 

分 类 号：S511[农业科学—作物学]