大豆新品种豫豆18号的选育及高产稳产性分析

Breeding of a new soybean variety Yudou No.18 and the analysis of the high stable yield

豫豆１８号丰产、稳产、早熟、优质（蛋白质含量４３．２６％），适应性强。河南省２年区试比对照豫豆２号增产１９．０％，３年国家区试比对照中豆１９号增产１１．０８％，两年河南省生产试验比对照中豆１９号平均增产１１．２％，综合评比居供试材料首位。

A composite crossing way was carried out by using many parents,which had many disparities in genetics and reciprocity in characters.The filial generations were alternately selected under different adverse environments. Being reproduced of the better lines, a new variety Yudou No.18 with high stable yield and high protein content was produced. Results from Henan Province' s soybean regional trail during two years showed the average yield of Yudou No.18 was 2738.9kg/hm 2 and more notable increase production than check. According to analysis of yield, Yudou No.18 belonged to the type of high and stable yield.