Main fruit traits and cluster analysis of watermelon germplasm
2008
Su Yuhuan | Wang Jinghua | Li Wenqi
chinois. 为发掘和利用西瓜优异的种质资源，本研究对100份西瓜的主要果实性状进行了分析。结果表明：果实平均重和千粒重变异系数较大，果皮硬度和含糖量变异较小。基于果实性状的聚类分析将供试材料分为4个类群。类群1，包括21份材料，主要来自美国和日本，美国的材料占该类群的42．9％，13本材料占38．10％，该类群的特点是果实中等、种子小、含糖量高、硬度高；类群Ⅱ，包括25份材料，16份来自国内，占该类群的64％，其特点为果实大、种子大、含糖量中等、硬度高；类群Ⅲ，包括35份材料，主要来自日本，占该类群的54．28％，该类群特点是果实中等、种子小、含糖量高、硬度差；类群Ⅳ，包括19份材料，主要来自美国的PI系列，占该类群的63％，其特点为果实小、种子中等、含糖量低、硬度中等。[著者文摘]
Afficher plus [+] Moins [-]anglais. In order to make use of excellent germplasm of watermelon, the main fruit traits of 100 watermelon materials from different regions were analyzed. Results showed that variations of aver- age weight of fruit and 1 000 - seed weight were of higher level, whereas lower variations in peel hardness and sugar content. Through cluster analysis, the materials were classified into 4 groups （Gs） when the threshold was 10. GI, 21 varieties including 9 from USA （42.9%） and 8 from Ja- pan （38.10%） respectively, was moderate fruit- little seed- low sugar content- high peel hard- ness; GII, 25 materials, 16 from China （64 % ）, was large fruit- big seed - moderate sugar content - high peel hardness; Gill, 35 varieties, 54.28 % of which came from Japan, was moderate fruit- little seed- high sugar contentlow peel hardness; GIV, 19 varieties, mainly from USA （63 % ）, was small fruit - moderate seed - low sugar content - moderate peel hardness.
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