【摘要】 目的研究通关藤Marsdenia tenacissima的生长发育规律,为通关藤的人工栽培育种以及规范化种植提供科学依据。方法以采自云南省马关县的当年成熟通关藤种子为材料,研究发芽床、浸种时间、温度、光照处理及p H值对种子萌发的发芽势、发芽率及根茎长的影响。结果砂床为通关藤种子适宜的发芽床;浸种时间对种子的发芽影响不显著;种子最适宜发芽的温度为25~30℃;适宜温度条件下,光照与否对通关藤种子发芽率的影响不明显,温度不适时,光照为影响种子发芽的主要因素;偏酸性的逆境对通关藤种子萌发的影响比碱性的逆境影响小。结论适合通关藤种子萌发的条件为发芽前浸种24 h、30℃、p H为7.0~7.5的砂床环境下光照培养。更多还原

【Abstract】 Objective In order to identify the germination behavior of Marsdenia tenacissima seeds.Methods We studied on ground substance,soaking time,temperature,illumination,and p H value,which have the effects on the germination of M.tenacissima seeds.Results The results showed that M.tenacissima seeds can germinate in different ground substances especially in sandy soil,the effect of soaking time on the seed germination of M.tenacissima is not significant,the seeds could germinate well during 25 — 30 ℃.Based on these appropriate conditions,the effect of illumination is not significant but the illumination should be the key factor under inappropriate temperature.The effect of acidic soil is lighter than that of alkaline soil.Conclusion The optimal germination condition of M.tenacissima seeds is 24 h of soaking at the temperature of 30 with sandy soil ℃ by which p H value is 7.0 — 7.5 under illumination.更多还原