枣种质果实性状多样性分析与综合评价
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作者单位:

1.山西农业大学园艺学院;2.山西农业大学果树研究所/果树种质创制和利用山西省重点实验室

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基金项目:

国家科技资源共享服务平台项目(NHGRC2021-NH12-1);国家重点研发计划项目(2019YFD10016050101);国家农业产业技术体系(CARS-30-ZZ-22)


Diversity Analysis and Comprehensive Evaluation of Jujube Fruit Traits
Author:
Affiliation:

1.College of Horticulture,Agricultural University of Shanxi;2 .Institute of Fruit Trees,Shanxi Agricultural University/Shanxi Key Laboratory of Fruit Germplasm Creation and Utilization

Fund Project:

National Science and Technology Resource Sharing Service Platform Project(NHGRC2021-NH12-1);National Key Research and Development Project(2019YFD10016050101);National Agricultural Industrial Technology System(CARS-30-ZZ-22)

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    摘要:

    本研究以116份枣种质为研究材料,通过遗传多样性指数、聚类分析和主成分分析等方法对22个果实性状进行多样性及综合评价分析。结果表明:13个数量性状变异系数介于1.76%~41.30%,单果重和可滴定酸含量变异程度较大。22个果实性状遗传多样性指数H’范围在1.04~2.05,其中果实横径(2.05)、维生素C含量(1.96)、果实形状(1.88)和果实颜色(1.10)H’较高。22个果实性状进行聚类分析,分为四个类群,Ⅰ类群属于野生资源类型,Ⅱ类群属于高营养物质含量种质类型,Ⅲ类群属于特异营养含量种质,Ⅳ类群属于果实外观品质较好的种质类型。主成分分析把22个果实性状分为8个主成分,累计贡献率为75.620%,第1主成分与果实大小有关,第2个主成分与果形指数有关,第3、4主成分与果实营养物质和果实口感有关。果实性状综合得分(D)范围在0.15~1.04,平均值0.64,河北的赞晶和山西临县的杨家山大枣等种质位居前列,综合评价优异。根据特异性状指标,筛选出了泗洪大枣、赞皇1号、清徐蘑菇枣、榆次奶头枣、襄汾葫芦枣、鲁枣7号、稷山水枣、稷山蛤蟆枣、稷山猪牙枣、临县甜酸枣、临县刘家会枣、兴县老婆枣、临县开阳大酸枣和鲁枣10号等特异种质14份。本研究对枣种质果实性状进行多样性分析和优特异性状鉴定,可为构建枣种质综合评价体系和筛选特异种质提供重要参考。

    Abstract:

    The diversity analysis and comprehensive evaluation of 22 fruit traits of 116 jujube germplasms were conducted by deployment of the coefficient of variation, genetic diversity index, cluster analysis, principal component analysis and comprehensive score. The coefficient of variation at 13 quantitative traits ranged from 1.76% to 41.30 %, and a higher coefficient of variability were detected at two traits single fruit weight and content of titratable acid. Shannon-Weaver Information index of 22 fruit traits ranged from 1.04 to 2.05, while a higher H' index was observed at the fruit diameter (2.05), vitamin C content (2.04), fruit shape (1.88) and fruit color (1.10). The cluster analysis using the phenotypic datasets at the 22 fruit traits suggested four groups, including Group I that belonged to wild resource type, group II that belonged to high nutrient content germplasm type, group III that belonged to specific nutrient content germplasm, and group IV that belonged to germplasm type with good fruit appearance quality. The 22 fruit traits were divided into 8 principal components by principal component analysis, and the cumulative contribution rate was 75.620%. The first principal component was associated with fruit size, the second principal component was associated with fruit shape index, and the third and fourth principal components were associated with fruit nutrients and fruit taste. The comprehensive score (D) of fruit traits ranged from 0.15 to 1.04, with an average value of 0.64. The comprehensive evaluation suggested the elite germplasms ‘zanjing’ of Hebei Province and ‘yangjiashandazao’ of Linxian county of Shanxi Province. Based on the performance at fruit traits, 14 germplasms including ‘sihongdazao’, ‘zanhuang1’, ‘qingxumoguzao’, ‘yucinaitouzao’, ‘xiangfenhuluzao’, ‘luzao7’, ‘jishanshuizao’, ‘jishanhamazao’, ‘jishanzhuyazao’, ‘linxiantiansuanzao’, ‘linxianliujiahuizao’, ‘xingxianlaopozao’, ‘linxiankaiyangdasuanzao’ and ‘luzao10’, were identified. Collectively, the diversity analysis and identification of elite germplasm would provide important reference for the innovation and utilization of jujube germplasm resources and the construction of comprehensive evaluation system.

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吴 昊,苏万龙,石美娟,等.枣种质果实性状多样性分析与综合评价[J].植物遗传资源学报,2022,23(6):1613-1625.

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  • 收稿日期:2022-04-17
  • 最后修改日期:2022-06-13
  • 录用日期:2022-06-27
  • 在线发布日期: 2022-11-16
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