基于DUS测试的不同品种黄瓜性状研究

为优化黄瓜DUS测试中符合系数、变异系数、F检验和相关性分析方法的应用，明确试验黄瓜品种的特异性和稳定性，观察测量3个黄瓜品种植株、叶片和果实性状，对黄瓜群体目测性状和个体测量性状表达差异性进行分析研究，采用不同的方法对测试性状进行综合评价。结果表明，21个群体目测性状中有14个性状的符合系数为1，生长势、果实棱、刺毛密度和瘤数量存在不同程度的差异。雌花节率、果实瓜把长度的变异系数幅度分别为0.18～0.27、0.12～0.19，品种之间存在较大差异。F检验和相关性分析得出，第一雌花节位、雌花节率、主蔓节间长度、果实纵径、果实纵径/横径、果实棱呈现出显著性差异。利用F检验得出品种间的产量呈现显著性差异。综合分析可以判定，品种1（新改良烟台地黄瓜）和品种2（中农烟地1号）具有特异性和稳定性。

Study on the Traits of Different Cucumber Varieties Based on DUS Test

To optimize the application of coincidence coefficient, coefficient of variation, F test and correlation analysis in cucumber DUS test, and clarify the specificity and stability of cucumber varieties, the cucumber plant, leaf and fruit traits were observed and measured through DUS test on three different cucumber varieties. The expression differences of population visual traits and individual measurement traits of different cucumber varieties were analyzed, and different methods were used to comprehensively evaluate the test traits. The results showed that the coincidence coefficient of 14 traits in 21 populations was 1, while the growth potential, fruit edge, trichome density and tumor number were different. The variation coefficient of female flower node rate and fruit melon length was 0.18-0.27 and 0.12-0.19, respectively, and there were great differences among the varieties. Through F test and correlation analysis, it was concluded that the first female flower node, female flower node rate, main vine internode length, fruit longitudinal diameter, fruit longitudinal diameter/ transverse diameter and fruit edge showed significant differences. F test showed that the yield among the varieties showed significant difference. Comprehensive analysis can determine that variety 1 (newly improved Yantai cucumber) and variety 2 (Zhongnongyandi 1) have specificity and stability.