119个苜蓿品种（系）产量和农艺性状的遗传多样性分析

杨婉君, 潘香逾, 王秀华, 王璐, 赵岩

Genetic Diversity Analysis of Yield and Agronomic Traits of 119 Alfalfa Varieties (Lines)

Yang Wanjun, Pan Xiangyu, Wang Xiuhua, Wang Lu, Zhao Yan

表2 紫花苜蓿产量和农艺性状变异特征

Table 2 Variation characteristics of yield and agronomic traits of alfalfa

性状 Trait 茬次 Cutting times 最大值 Maximum 最小值 Minimum 平均值 Average 变异系数 Coefficient of variation (%) 株高Plant height (cm) E1 93.00 53.26 77.12 10.57 E2 150.40 66.20 114.47 12.63 主茎枝条数 E1 23.20 10.40 16.69 15.94 Number of main stem branches E2 19.40 8.20 15.26 12.12 植株密度(株/hm2) E1 436.00 96.00 227.56 35.79 Plant density (plant/hm2) E2 376.00 76.00 211.72 35.82 鲜草产量Fresh yield (t/hm2) E1 41.40 9.20 21.72 36.56 E2 55.20 11.20 27.56 37.37 干草产量Hay yield (t/hm2) E1 11.30 2.70 6.74 28.78 E2 11.90 2.50 6.37 37.79 干鲜比Dry-fresh ratio E1 0.43 0.24 0.33 13.89 E2 0.32 0.18 0.24 12.19 茎粗Stem diameter (mm) E2 6.70 2.70 4.50 14.03 E3 5.00 1.30 2.40 22.56 叶片数Leaf number E2 251.60 57.40 137.02 30.69 E3 46.60 10.20 21.54 32.97 叶长Leaf length (cm) E2 4.16 1.47 3.20 12.34 E3 4.32 1.10 2.40 28.76 叶宽Leaf width (cm) E2 4.30 0.92 1.53 25.84 E3 2.98 0.90 1.76 23.72 单株茎干重 E2 31.80 6.57 17.86 31.97 Stem dry weight per plant (g) E3 2.60 0.52 1.09 45.09 单株叶干重 E2 23.39 5.23 12.61 32.56 Leaf dry weight per plant (g) E3 3.39 0.68 1.55 40.83 茎叶比Stem-leaf ratio E2 2.84 0.82 1.48 23.00 E3 1.29 0.38 0.70 24.18