灰色局势决策法在苦瓜强雌系育种中的应用

Application of Grey Situation Decision Method to the Gynoecious Line Breeding of Bitter Gourd

为了开展苦瓜强雌系育种多因素综合评估,有效选择苦瓜优异种质资源及筛选优良组合,应用灰色局势决策法,对配制的9个苦瓜强雌系杂交组合F1代的各主要性状进行综合评判。结果表明,9个组合的13个性状的权重系数大小顺序为:总产量>单瓜重>结果数>横径>单瓜长>前期产量>肉厚>雌花率>茎粗>叶面积>节间距>第1朵雌花开放的天数>主蔓第1朵雌花开放时节位。综合测度结果表明,43×K1综合效果测度值最高,为0.9343,定为优良组合重点配制。

In order to make the comprehensive assessment of multiple factors in gynoecious line breeding of bitter gourd, and select the excellence germplasm resources and combination, 9 bitter ground hybrids were developed by gynoecious line 43 as female line and 9 self lives as male lines. Their 13 main characteristics were made a synthetic judgment by using grey situation decision method. The results showed that the order of gray relational weight of each character was as follows： total yield〉weight per fruit〉number of fruits〉 transverse diameter 〉 fruit length 〉 yield at early stage 〉 flesh thickness 〉 percentage of female flowers 〉 main stem diameter〉area of leaf〉node length〉abloom days of female flowers〉node of first female flower. The measure-value on comprehensive effects of 43×K1 was 0.9343. It was the most excellent combination in this test.