hybrid index method是什么意思

用法例句

This paper, by means of observations on outcrossing index and pollen-ovule ratio, emasculation, bagging and artifical pollination, studied the reproduction characteristics between Eleutherococcus senticosus and E.

sessiliflorus)的开花进程、花朵的功能形态特征和开花动态 ,用杂交指数 ( OCI)、花粉 -胚珠比 ( P/ O)、去雄、套袋、人工授粉等方法分别测定刺五加、短梗五加的繁育系统。