基于不同评价方法对100份樱桃番茄种质资源的综合评价

    Comprehensive evaluation of germplasm resources of 100 cherry tomatoes based on different evaluation methods

    • 摘要:
      目的 探究樱桃番茄Solanum lycopersicum var. cerasiforme种质资源在银川平原地区的适应性,评价适合银川平原地区新品种选育的优良樱桃番茄育种材料。
      方法 以收集到的100份樱桃番茄种质资源为研究对象,对其主要表型性状进行测定,利用多元统计法、灰色关联度分析法和DTOPSIS法3种不同的评价方法进行适应性综合评价。基于主成分计算出综合得分,灰色关联度法计算出加权关联度,DTPOSIS法计算出相对贴近度。
      结果 100份樱桃番茄的主要表型性状的变异系数在17.78%~306.46%之间,大部分性状间存在显著或极显著相关性。26个表型性状综合成了10个主成分,累计贡献率达71.901%。以3种评价方法对各种质进行排名,结果既有统一性,也有差异性,共有4份材料均排在前10名,分别是T55、T83、T42和T87,表明T55、T83、T42和T87是表现优良的种质,其中T55的表现最为优异。
      结论 T55是最适宜银川平原地区栽培的种质材料,可作为重要的育种基础材料;上述3种方法对樱桃番茄的评价结果略有不同,但无巨大差异,说明方法可行,有利于种质资源评价方面的研究。

       

      Abstract:
      Objective In order to explore the adaptability of cherry tomato (Solanum lycopersicum var. cerasiforme) germplasm resources, and evaluate the excellent cherry tomato breeding materials suitable for new varieties breeding in Yinchuan Plain area.
      Method Totally 100 cherry tomato germplasm resources were collected as research objects, and the main phenotypic traits were determined. The adaptability was comprehensively evaluated by three different evaluation methods, multivariate statistical method, grey correlation analysis method and DTOPSIS method. The comprehensive score was calculated based on the principal component, the weighted correlation degree was calculated by the grey correlation degree method, and the relative proximity degree was calculated by the DTPOSIS method.
      Result The coefficient of variation of the main phenotypic traits of 100 cherry tomatoes ranged from 17.78% to 306.46%, and there were significant or extremely significant correlations among most of the traits. The 26 phenotypic traits were integrated into 10 principal components, with a cumulative contribution rate of 71.901%. The ranking of various qualities under the three evaluation methods showed both uniformity and difference. A total of four materials were ranked in the top 10, namely, T55, T83, T42 and T87 under all three methods, indicating that T55, T83, T42 and T87 were excellent germplasms, and T55 was the best.
      Conclusion T55 is the most suitable germplasm material for cultivation in Yinchuan Plain, and can be used as an important basic material for breeding. The evaluation results of the above three methods are slightly different, but there is no huge difference, which shows that the methods are feasible and beneficial to the research of germplasm resource evaluation.

       

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