国家棉花品种区域试验90年代参试品种抗病性评述

Evaluation on Disease Resistance of National Cotton Variety Regional Test in the 90′s

黄河区试、长江抗病区试、麦套棉区试和夏棉区试三轮试验的６０个品种的抗病性鉴定结果表明，参试品种的抗枯萎病性水平较高，而抗黄萎病性和兼抗性水平较低。９０年代以来参试品种的抗病性发展趋势为抗枯萎病性在达到较高水平后趋于稳定；抗黄萎病性和兼抗性为上升趋势。不同熟性品种的抗病性有明显差异，表现为早熟棉品种的抗枯、黄萎病性和兼抗性均优于中熟棉品种。来自黄河流域棉区参试品种的抗病性明显优于来自长江流域棉区的参试品种。

The evaluation on resistance of sixty cotton varieties from the third cycle of cotton regiontal test were conducted. The result showed that the resistance to Fusarium oxisporum of tested varieties is better than that to Verticillium dahliae but worse to both of them. The differences of disease resistance between the early maturity varieties and midmaturity varieties were obvious, the resistance to Fusarium oxisporum,Verticillium dahliae and to both of them showed that the former is better than the latter. Varieties come from Yellow River valley have the better resistance than those from Yangze River valley.