湖南省玉米地方品种表型性状综合评价及类群划分

郭欢乐, 汤彬, 李涵, 曹钟洋, 曾强, 刘良武, 陈志辉

Comprehensive Evaluation of Phenotypic Traits and Classification of Maize Landraces in Hunan Province

Guo Huanle, Tang Bin, Li Han, Cao Zhongyang, Zeng Qiang, Liu Liangwu, Chen Zhihui

表2 湖南省玉米地方品种表型性状变异

Table 2 Phenotypic trait variation of maize landraces in Hunan province

性状 Trait 变异范围 Range of variation 均值 Mean 变异系数 Variable coefficient (%) 遗传多样性指数 Genetic diversity index 生育期Growth period (d) 85.0~119.0 97.8 6.5 1.943 株高Plant height (cm) 173.2~380.2 283.1 17.0 2.086 穗位高Ear height (cm) 50.5~227.5 133.3 27.1 1.814 叶片数Leaf number 15.5~25.0 19.4 11.1 2.043 空秆率Empty bar rate (%) 0.0~40.5 3.5 175.0 1.393 倒伏（折）率Lodging rate (%) 0.0~46.5 4.4 148.8 1.531 穗长Ear length (cm) 10.3~23.3 17.5 14.2 2.053 秃尖长Bald tip length (cm) 0.0~3.0 0.9 76.2 1.889 穗粗Ear diameter (cm) 1.0~5.3 4.3 13.7 1.845 穗行数Row number per ear 9.5~16.5 12.9 10.4 2.048 行粒数Grain number per row 15.0~44.8 33.8 17.3 2.032 单株产量Yield per plant (g) 18.4~177.5 109.1 31.6 2.067 出籽率Rate of seed (%) 49.7~88.6 80.6 6.9 1.760 千粒重1000-grain weight (g) 74.0~449.0 284.6 23.7 1.968 籽粒颜色数Number of grain colors 1.0~4.0 1.8 47.4 1.119