基于主成分分析的花生种质资源苗期抗旱性鉴定与筛选
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S565.2

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吉林省农业创新工程项目(C4207350101);吉林省科技厅重大攻关专项(20130204040NY)


Identification and Evaluation of Drought Resistance of Peanut Germplasm Resources at Seeding Stage Based on Principal Components Analysis
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    摘要:

    以273份花生种质资源为试材,于温室模拟干旱胁迫环境,对各种质资源的地上鲜重、地下鲜重、鲜重根冠比、地上干重、地下干重、干重根冠比、主茎高等7项形态指标进行测定,对7项指标的相对抗旱系数进行主成分分析。结果表明,地下鲜重和地下干重相对抗旱指数载荷量最大,将其作为花生种质资源抗旱筛选的主要评价指标,并对273份花生种质资源的抗旱性进行排序,最终将花生种质资源按抗旱性强弱分为5类,8份高度干旱敏感种质资源;46份干旱敏感种质资源;188份中等抗旱种质资源;24份抗旱种质资源;7份高度抗旱种质资源。

    Abstract:

    273 peanut germplasm resources were cultivated under simulated drought- stressed condition ingreenhouse. Seven morphologic indexes were tested for all varieties, which included fresh weight of above ground,fresh weight of below ground, fresh R/T, dry weight of above ground, dry weight of below ground, dry R/T, length ofmain stem. Principal component analysis was performed by relative drought resistance coefficient on the seven indi-cators. The results showed that relative fresh weight and relative dry weight of below ground had the maximumweight in values, which were used as the main indices for evaluating and ranking the drought-resistant capabilitiesof 273 peanut materials. Five groups of drought-resistance capabilities of these peanut materials were detectedbased on Principal Components Analysis, i.e., 8 germplasm resources were highly drought-sensitive, 46 germplasmresources were drought-sensitive, 188 germplasm resources were medium drought-resistant, 24 germplasm resourc-es were drought-resistant, and 7 germplasm resources were highly drought-resistant.

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牟书靓,李玉发,牛海龙,李伟堂,王佰众,王丕武,何中国.基于主成分分析的花生种质资源苗期抗旱性鉴定与筛选[J].东北农业科学,2015,40(6):26-30,69.

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  • 收稿日期:2015-06-30
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  • 在线发布日期: 2024-12-06
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