Evaluation of Soybean Germplasm from Provinces in Northeast China for Resistance to Phytophthora sojae

Soybean Phytophthora root rot (Phytophthora sojae) is a severe disease all over the world. Soybean germplasm from central and southern China for resistance has been evaluated by American researchers on a large scale. P. sojae has been found frequently in northeast of China in recent years, but not systematic evaluation of soybean germplasm for resistance has occurred there. By means of hypocotyl inoculation, 922 cultivars/lines from northeast of China were screened and evaluated for their response to race 1, and 25 of P. sojae. Generally resistance was less frequent in northeast of China than in central and southern China. Five cultivars/lines were identified that confer resistant responses to race 1, 3, 8, 25 and four additional isolates of P. sojae. These cultivars/lines may provide valuable sources of resistance for future breeding programs.

豌豆种质资源抗旱性鉴选与利用价值分析

为了鉴定筛选抗旱的豌豆种质资源及适宜在旱作雨养农业区生产中应用的优良品种(系),2008～2009年,在定西市旱农中心旱地试验地,采用田间自然鉴定方法,对来自全国主要豌豆产区七个省(市)的78份材料进行了抗旱性鉴定及筛选,以确定不同品种(系)在干旱条件下的抗旱性、综合农艺性状及产量表现。结果表明:17份材料属典型抗旱材料,6份为抗旱材料,10份为中等抗旱材料;在所有抗旱材料中,有8份材料各项筛选指标均较高,属抗旱性强、稳产性好的材料。