Studies on Dormancy in Lilium species

长花百合‘Hinomoto’、L.Speciosum、L.Concolor var‘Hinomoto’、L.Speciosum、L.Concolor变种鳞茎在20ﾟ、12h日长时叶片出苗及内源生长素和脱落酸含量的季节变化。对产地不同的长花紫草和落叶紫草进行了研究，结果表明，长花紫草的出叶率、生长素和脱落酸含量的变化趋势与作者以前报道的相似，出叶量在1月份以后下降，在生长素含量低、脱落酸含量高的3、7月份达到最低。百合和狭叶百合的出叶率低于其他两种植物，而康色百合的出叶率低于其他两种。该菌与长花乳杆菌相似。4种植物生长素和脱落酸的变化规律基本一致，从植物的出叶行为来看，长花落叶松和狭叶落叶松的休眠比长花落叶松和康色变种的休眠要强烈。Pallchellum的休眠时间较短，而Lancifolum和L.Speciosum的休眠程度较高。百合中植物激素含量的变化也支持这一观点。百合属植物的休眠强度已被证明与其原产地密切相关。

Seasonal changes in leaf emergence during scaling at 20^ﾟ and 12 h daylength and endogenous auxin and abscisic acid contents in mother bulbs of Lilium longiflorum 'Hinomoto', L. Speciosum, L. Concolor var. Pulchellum amd L. Lancifolium of which the places of origin are different were investigated.Leaf emergence and changes in auxin and abscisic acid in L. Longiflorum showed the similar tendency to those reported previously by the author ; leaf emergence decreased after January to reach the lowest during March and July, when auxin content was low and abscisic acid content was high. Lilium lancifolium and L. Speciosum showed lower leaf emergence throughout the year than other two species, while the leaf emergence of L. Concolor var. Pulchellum was resembled to that of L. Longiflorum. Fluctuations of auxin and abscisic acid were almost similar in all the four species.It is suggested that from the behaviors of leaf emergence in these species dormancy of L. Lancifolium and L. Speciosum is more intense than that of L. Longiflorum and L. Concolor var. Pulchellum, and that among L. Lancifolium and L. Speciosum, the former has more intensive dormancy. Changes in the plant hormone contents in them also support the suggestion.Intensity of dormancy in Lilium species has been shown to have a close relationship to their places of origin.