交配距离与父本数量对野慈姑有性繁殖的影响

周盼盼, 陈全, 张宇杰, 汪正祥, 戴璨

Effects of mating distance and number of pollen donors on sexual reproduction of Sagittaria trifolia

ZHOU Pan-Pan, CHEN Quan, ZHANG Yu-Jie, WANG Zheng-Xiang, DAI Can

表1 野慈姑不同交配距离下的繁殖指标比较(平均值±标准误差)

Table 1 Comparison of reproductive indexes of Sagittaria trifolia at different mating distances (mean ± SE)

繁殖指标 Reproductive indices 自交 Selfing 近距离异交 Outcrossing of short distance 远距离异交 Outcrossing of long distance 比较 Comparison 坐果概率 Fruiting probability (%) 90.38 ± 4.13 88.46 ± 4.47 90.00 ± 4.29 LRT = 0.136, p = 0.93 单果种子数 Seed number per fruit 236.96 ± 21.78 237.49 ± 25.02 253.98 ± 24.00 F2,125.0 = 0.22, p = 0.81 种子面积 Seed size (mm2) 5.50 ± 0.20 5.90 ± 0.24 5.68 ± 0.20 F2,123.8 = 0.84, p = 0.44 2018年萌发率 Germination rate of year 2018 (%) 5.82 ± 0.95 4.64 ± 1.05 4.47 ± 0.70 F2,126.0 = 0.07, p = 0.93 2019年萌发率 Germination rate of year 2019 (%) 8.48 ± 1.38 7.62 ± 1.23 9.16 ± 1.63 F2,104.0 = 0.14, p = 0.87 2018年幼苗芽长 Seedling length of year 2018 (cm) 3.24 ± 0.28 3.09 ± 0.21 3.36 ± 0.24 F2,93.3 = 0.67, p = 0.52 2019年幼苗芽长 Seedling length of year 2019 (cm) 2.13 ± 0.17 2.33 ± 0.20 2.23 ± 0.20 F2,85.0 = 0.26, p = 0.77