甜瓜种质资源若干果实数量性状差异研究及分级探讨

The Evaluating Classification of Some Quantitative Characters of Fruit of Melon Germplasm Resources

利用152份甜瓜资源的6个主要果实数量性状,分析各性状品种间差异,参照国际植物新品种保护联盟(UPOV)标准,对我国甜瓜品种资源进行了果实数量性状分级探讨并拟定标准品种。结果表明,各性状品种间差异均在24.4%(果实横径)以上,最高达到57.5%(果脐大小);按1、3、5、7、9代码分为5级,其中,果皮厚度、果实沟间宽度、果脐大小和果肉厚度省略了极端级代码,确定分级评价指标,每一性状在不同级别拟定标准品种并用具体数值进行描述,对甜瓜品种果实数量性状分级描述提供科学依据。

This experiment was carried out with 152 melon germplasm resources. In order to describe the main quantitative characters of fruit, the classification of six quantitative characters of fruit of melon in China that referred to the criteria of International Union For The Protection Of New Varieties Of Plants（UPOV） was researched. The result showed that the coefficients of quantitative characters were all above 24.4%; these grade indexes were recorded on the standard＂1--9＂scale, the codes 1,3,5,7,9 or 3,5,7 vcere used to distribute the scale in fact, and scale of each character was described by standard varieties and numerical value; this research provided the scientific rule and served for melon breeders.