淫羊藿开花的时空效应对其结实的影响

Effects of Flowering Period and Space of Inflorescences of Epimedium brevicornu on Fruit Set

运用非参数检验和单因素方差分析,研究了淫羊藿开花的花序水平的位置效应与空间效应对结实的影响。结果表明:(1)开花时间效应对内萼片长、内萼片宽、花药长、距宽、距长的影响显著,其参数均是早期和中期大于晚期;花部空间对内萼片长和内萼片宽的影响显著,而对花药长、距长和距宽的影响不显著。(2)开花时期对淫羊藿结实率无显著差异,但早期和中期的结实率要远远高于晚期;时间效应对果实形态参数的影响极显著,且大小均为早期大于中期和晚期;早期和中期的果实重量和种子数要显著高于晚期,而在晚期的果实种子数败育率较高。(3)在开花的空间效应中,基部和中部之间的结实率无显著差异,但两者显著高于顶部的结实率;基部的果实形态参数要高于中部和顶部;从果实重量和种子数来看,基部和中部要大于顶部,但顶部的果实败育率高于基部和中部。因此,对于淫羊藿的实际繁殖或药用,应采摘早期和中期开花的基部果实,其效果会更好。

The effects of flowering time and space of the inflorescences of Epimedium brevicornu on reproductive success were revealed by Nonparametric test and One way ANOVA. The results indicated that the length of outsepal,width of outsepal,the length of anther,the length of spur and width of spur were influenced by the flowering time significantly. During at the early and middle stage of flowering, the parameters of flower were bigger than that at the last stage of flowering. At the same time the length of outsepal, width of outsepal were influenced by the floret position of inflorescence significantly,but insignificantly on the length of anther,the length of spur and width of spur. Among the three stage of flowering,the differences in fruit set of E. brevicornu were not remarkable,but the fruit set at the early and middle stage of flowering were heavier than that at the last stage of flowering. The significant effects of flowering time on fruit morphological parameters. The parameters of fruit at early stage were higher than that at middle and the last stage. No significant differences of the fruit weight and number of seeds were observed between the early and middle stage, while the percentage of seeds abortion at early stage was higher than that at other stages. It was also indicated that the fruit setting rate was insignificant between base and middle position of inflorescences,which were obviously higher than that of top. The fruit morphological parameters of base were higher than that at middle and top. There was no significant difference of the fruit weight and number of seeds at the base and top position of inflorescences, while the percentage of seeds abortion at base and middle were higher than that at top. So,in order to make work more effect,we should pick the fruits of E. brevicornu at the early or middle stage of flowering,and the base position of the inflorescences to do experiment or for medicine.