不同山丹居群在保定的生长特性分析

对25个居群的山丹在保定地区的物候期、生长期特性进行了调查分析。结果表明,不同山丹居群的物候期存在明显差异。萌芽期和开花期最早的为辽宁居群,最晚的为易县和邯郸居群,萌芽期相差37～39 d,开花期相差将近3个月。25个居群的不同生长发育阶段(花蕾发育期、花期天数、生长周期)所需的时间长短不一。不同居群山丹生长曲线基本一致,均为慢-快-慢的生长趋势。相关分析表明纬度与山丹的萌芽期、现蕾期、始花期、末花期、果熟期、枯萎期之间均呈极显著负相关。山丹的自然物候期也存在明显早、晚差异,这为百合育种提供了良好的资源。

The Growth Characteristics of Different Lilium pumilum DC.Populations in Baoding

The phenophase and growth status of twenty five Lilium pumilum populations were investigated and analyzed in Baoding. The results showed that the phenophase of twenty five Lilium pumilum populations were significantly different. Liaoning populations showed the earliest germination and blossom stages were, while the Yixian and Handan populations showed the latest and the differences among the germination stages were 37~39 days and could be 3 months in blossom stages. The length of growth stages (bud period, days of flowering period, the growth circle) varied with twenty five Lilium pumilum populations. The growth curves of twenty five Lilium pumilum populations were in substantial agreement, which had the growth trend of slow-fast-slow. The result of correlation analysis shows that latitude was significantly negatively related to the development stages of bud, squaring, beginning flower, late blooming, ripe fruit, withered time. The early and late phenophases of Lilium pumilum varied remarkably ,which provides good resources for Lily breeding.