【摘要】 ９８份样本的调查结果表明，用穗垂角和穗高与穗投影长度之比可以表示水稻在田间生长状态下蜡黄至成熟期这段时间里穗的姿态；从表示穗姿态的两个参数分布来看，存在着籼粳两亚种间的差异籼＞籼并有中间类型存在，籼粳交Ｆ１植株穗姿态受粳稻亲本影响大。更多还原

【Abstract】 samples have been investigatede, results showed that drooping angle of rice panicle and ration of panicle height to length of itsprojection can define the atittude of rice panicle on the field growing condition in the period frow waxan to maturity. Two paramenters iadicatiangattitude of The rice panicle was differential between indnca and japonica,ndica>japonica. There are also meielm types.The panicle attitude ofIndica-japonica F1 plants were affected mainly by japonica parents.更多还原