海岛棉种质资源的遗传多样性及对黄萎病的抗性鉴定
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新疆农业大学

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国家育种攻关项目(2022MH-01)、早熟抗病棉花新品种设计与培育(2023ZD04041)


Genetic diversity of Gossypium barbadense germplasm resources and identification of resistance to Verticillium wilt
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    摘要:

    摘要【目的】通过田间抗病性与室内苗期抗病性联合鉴定和分析,掌握海岛棉种质资源的抗病性分布状况,为筛选出抗黄萎病高抗资源提供基础。【方法】以本课题组的238份海岛棉种质资源为鉴定对象,于2023年在库尔勒和阿瓦提通过自然病田小区试验,并联合室内通过接菌的方法,对海岛棉资源进行黄萎病抗病性鉴定和评价。【结果】对238份海岛棉种质资源的15个指标遗传多样性分析,变异系数范围为2.00%~36.97%,均值为16.05%。于不同环境进行抗性鉴定发现变异系数范围为8.40%~71.06%。结合4个不同环境分析未鉴定到对黄萎病完全免疫及高抗的种质资源材料,鉴定出30份抗病材料,194份耐病材料,14份感病材料。【结论】整体趋势可以看出海岛棉种植资源对黄萎病大部分都具有抗耐性,因此从海岛棉种质资源中鉴定和选育出对黄萎病抗性强的种质资源是十分重要的。

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    Abstract 【Objective】 Through the joint identification and analysis of disease resistance in the field and indoor seedling stage, the distribution of disease resistance of gossypium barbadense germplasm resources was mastered, which provided a basis for screening high resistance resources to Verticillium wilt. 【Methods】 The 238 gossypium barbadense germplasm resources of our research group were used as identification objects. In 2023, the natural disease field plot test was carried out in KEL and AWT, and the resistance of gossypium barbadense resources to Verticillium wilt was identified and evaluated by indoor inoculation. 【Results】 The genetic diversity of 15 indexes of 238 gossypium barbadense germplasm resources was analyzed. The coefficient of variation ranged from 2. 00 % to 36. 97 %, with an average of 16. 05 %. Resistance identification in different environments showed that the coefficient of variation ranged from 8.40 % to 71.06 %. Based on the analysis of four different environments, no germplasm resources with complete immunity and high resistance to Verticillium wilt were identified, and 30 resistant materials, 194 resistant materials and 14 susceptible materials were identified. 【Conclusion】 The overall trend can be seen that most of the gossypium barbadense planting resources have resistance to Verticillium wilt. Therefore, it is very important to identify and select germplasm resources with strong resistance to Verticillium wilt from gossypium barbadense germplasm resources.

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姜梦竹,杨育哲,吕涛,等.海岛棉种质资源的遗传多样性及对黄萎病的抗性鉴定[J].西北植物学报,2024,44(10):1626-1638

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  • 收稿日期:2024-03-08
  • 最后修改日期:2024-05-13
  • 录用日期:2024-05-15
  • 在线发布日期: 2024-08-16
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