光、温度和土壤水分对坡垒种子萌发的影响

Effects of Illumination, Temperature and Soil Miosture Content on Seed Germination of Hopea hainanensis

摘要:

研究了温度、光照、土壤水分对坡垒（Hopea hanianesis Merr.et Chun）种子萌发和寿命的影响。结果表明坡垒种子萌发的最适温度为15-20℃。种子在全黑暗条件与周期性光照条件下处理的萌发结果无明显差异。土壤含水量为20％-70％时种子能够萌发,而适宜的土壤含水量为30％-50％。在室内自然摊放第14天的发芽率为20％,18d完全丧失发芽能力。由于坡垒种子具有顽拗型种子的一些特点,该物种宜采取活体保存的方法,以就地保护为主,迁地保护为辅。

Abstract:

The effects of illumination, temperature and soil miosture content on germination and longevity of Hopea hainanensis seeds were studied. The results indicated that the best temperature for seed germination was 15-20℃. The seeds treated under full dark and under light (2 800 lx for 14 h and dark for 10 h) showed no obvious difference in germination rate. Optimum soil moisture content for seed germination was 30%-50%. Seeds spread in the room at ambient temperature in May in South Yunnan for 14 days had only 20％ germination rate， and the germination ability was completely lost at the l8th day.