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以我国国家橡胶树种质资源圃保存的119份橡胶树栽培种为材料,对叶蓬形状、叶面绿色程度等21个农艺性状进行比较分析。结果表明,遗传多样性指数平均值为0.83,叶痕形状最高为1.20,蜜腺表面形态为0.27,且性状数据分布集中;各性状中变异系数最大的大叶柄形状为60.03,蜜腺表面形态最小为9.08,平均值为33.88;叶面绿色程度和叶面光泽度、叶片形状与叶片基部形状等7对性状相关性极显著;21个性状可聚为2大类,119份供试材料中,同一品种来源地、亲本和子代、具有类似品种特性(抗寒性)等类型的品种聚为一类。分析结果可供橡胶树种质资源鉴定和杂交亲本选配参考。
A total of 119 rubber tree cultivars preserved in our national rubber tree germplasm resource were used as materials to analyze 21 agronomic traits such as leaf shape and leaf green degree. The results showed that the average of genetic diversity index was 0.83, the highest leaf shape was 1.20, the nectary surface morphology was 0.27, and the distribution of trait data was concentrated. The shape of the largest petiole with the largest coefficient of variation was 60.03 and the shape of the nectary surface was the smallest 9.08 with an average value of 33.88. The correlation between leaf green degree and leaf surface glossiness, leaf shape and leaf base shape was very significant. 21 traits could be clustered into two groups and 119 of the tested materials, The same variety of origin, parents and offspring, with similar varieties (cold hardiness) and other types of polygamy together. Analysis results for identification of rubber tree germplasm resources and hybrid parent matching reference.