独蒜兰种子的自然萌发特性(Ⅱ)

摘要

为了解独蒜兰种子的萌发特性,保护和利用独蒜兰资源,设计3个播种地点(开垦地、栽培地、原生地)和4个播种时间(8月、9月、10月、11月)的试验以探究独蒜兰种子自然萌发与播种地点、播种时间的相关性.结果表明:原生地播种种子顺利萌发至第4阶段原球茎,同时具有最高萌发率、萌发生长指数,最低死亡率,其中,萌发生长指数差异达到显著水平；11月播种种子萌发率、萌发生长指数相对比8月、9月、10月高,其中,萌发生长指数显著高于8月、9月播种.因此,选择原生地在11月播种利于独蒜兰种子的萌发和生长.%In order to understand the natural germination characteristics of P.bulbocodioides seeds,protect and utilize P.bulbocodioides resource,three sowing sites(reclamational soil,cultivation soil and soil in situ)and four sowing times(August,September,October,November) were designed to explore the natural germination characteristics of P.bulbocodioides seeds.The results showed that seeds sowed in situ could germinate to the fourth stage protocorm with the highest germination rate and germination-growth index and the lowest death rate.Seeds with the highest germination rate and germination-growth index and the lowest death rate were those being sowed in November,the germination-growth index was significantly higher than that sowed in August and September.Consequently,seeds sowed in situ in November was beneficial to their germination and growth.