对中国水稻骨干亲本评定方法的探索

孙宗修^**,,^*, 鄂志国^**, 王磊, 朱德峰, 张玉屏, 胡国成, 刘文真, 付亚萍^*

Exploring Assessment Method of Chinese Rice Backbone Parents

SUN Zong-Xiu^**,,^*, E Zhi-Guo^**, WANG Lei, ZHU De-Feng, ZHANG Yu-Ping, HU Guo-Cheng, LIU Wen-Zhen, FU Ya-Ping^*

图2 一定种植面积的衍生品种系数占当代品种总数的百分比
Fig. 2 Distribution frequencies of derivational quantity from bred varieties lines for three generations with different amount of planted area in different decades