棉花品种资源黄萎病田间抗性鉴定和评价
Identification and evaluation of resistance of cotton variety resources to Verticillium wilt in field
通过田间抗病性鉴定和分析，掌握种质抗病性，筛选抗黄萎病核心资源，经遗传改良，定向选育与新疆棉花产业需求相吻合的抗病品种，并探讨病害治理策略。以收集的396 份陆地棉品种资源为鉴定对象，2018—2019年，通过自然病田小区试验，在6月底(蕾期)和8月底(铃期),采用5级分级法，对品种资源进行黄萎病抗病性鉴定和评价。供试陆地棉种质具备丰富的抗病遗传多样性，种质间黄萎病变异系数高，可选择抗病种质利用。年度间各材料发病程度差异大，2018年发病明显重于…查看全部>>
The disease resistance of germplasm was clarified and the core resources for resistance to Verticillium wilt were screened by identifying and analyzing the disease resistance in the field. By means of genetic improvement, the disease-resistant varieties that meet the needs of Xinjiang cotton industry were directionally selected and bred. At the same time, the disease management strategies were also discussed in this study. The 396 upland cotton varieties res…查看全部>>
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