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  • 尚建立,王吉明,郭琳琳,等.西瓜种质资源主要植物学性状的遗传多样性及相关性分析[J].植物遗传资源学报,2012,13(1):11-15.    [点击复制]
  • ,et al.Genetic Diversity and Correlation Analysis of Main Botany Characters in Watermelon Genetic Resources[J].植物遗传资源学报,2012,13(1):11-15.   [点击复制]
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西瓜种质资源主要植物学性状的遗传多样性及相关性分析
尚建立, 王吉明, 郭琳琳, 马双武
0
(中国农业科学院郑州果树研究所)
摘要:
以我国西瓜、甜瓜种质资源中期库内1200份西瓜种质为材料,对果实重量、果肉颜色、中心糖、种子千粒重等12项主要植物学性状遗传多样性和相关性分析。多样性分析结果表明:我国西瓜资源12项植物学性状多样性指数平均值为1.70,种子千粒重多样性指数最大为2.37,果实形状多样性指数最小为1.02,其中果皮底色、果皮覆纹颜色、果肉颜色、果实重量、果实中心糖、种子千粒重性状数据分布较为分散。数量性状变异系数平均值为31.8,变异幅度均大于其平均值1~3倍。相关性分析结果表明:果实形状和果形指数、果肉颜色和果实中心糖、果肉颜色和种子千粒重、果皮厚度和硬度4对性状相关性极显著。种子千粒重和果实中心糖、果实重量和果皮厚度、果实重量和果皮硬度、覆纹颜色和形状4对性状相关性显著。
关键词:  西瓜  种质资源  遗传多样性  相关性
DOI:
基金项目:
Genetic Diversity and Correlation Analysis of Main Botany Characters in Watermelon Genetic Resources
Abstract:
The genetic diversity and correlation of twelve botanical characters were assessed in watermelon genetic resources in National Mid-term Genebank for Watermelon & Melon.The result of genetic diversity showed that:All botanical characters tested showed diversity indexes ranging from 1.02(fruit shape) to 2.37(1000-seed-weight) with an average of 1.70.The frequency distributions of botanical characters such as ground color of fruit surface, over color of fruit surface, flesh color, fruit weight, soluble solid content at center flesh, 1000-Seed-weight were dispersed. Variation coefficient of quantitative characters for average was 31.8. Variation range was 1-3 times greater than the average. The result of genetic correlation showed that:fruit shape and fruit ratio,flesh color and soluble solid content at center flesh,flesh color and 1000-Seed-weight,fruit rind thickness and fruit rind hardness was significantly related. 1000-seed-weight and soluble solid content at center flesh, fruit weight and fruit rind thickness, fruit weight and fruit rind hardness, over color of fruit surface and over color pattern of fruit surface was significantly related.
Key words:  Genetic resources  Genetic diversity  Correlation coefficient

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