红小豆京农1、2号新品种选育

The New Adzuki Bean Variety of Jing-nong No.1,2

本地区小豆育种目标是培育早熟、高产、优质、植株直立、具有一定耐旱性的新品种。作者根据本地区夏播红小豆的育种目标,提出采用竞争性选择育种法进行小豆品种改良。经过1985～1992年7年的实践,已育成京农1号、京农2号两个新品种。大面积种植增产显著。本文还提出了基因型与适应性环境互作模型(Y=g+gE+ge+e)及竞争性选择育种法的三个先决条件。

The breeding aim at Adzuki bean in Beijing area is selection early-maturing, plant-erecting and drought-resistant varieties with high yield and good quality. Recording to the breeding aim of summer Adzuki bean, the competion breeding method was put forward and in order to improve Adzuki bean variety.Through 7 Years' prac- tice from 1985～1992, two new valieties-Jing Nong No.1 and No.2 have been successfully selected and agained much higher Yield in large areas. In addition,An environment interaction model befween genotypi and a adaptability (Y =g+gE+ge+e)is proposed three prerequsites involved in the application of competition selection breeding method is also presented.