箭根薯种子的贮藏与萌发

Characteristics of seed storage and germination of Tacca chantrieri

就温度、光照和土壤水分对箭根薯 (TaccachantrieriAndre )种子萌发的影响及种子贮藏条件进行了研究 ,结果表明 ,箭根薯种子是需光性种子 ,萌发温度较窄且要求有较充分的土壤水分 ,其萌发的最适宜温度为 2 5～ 30℃ ,最适宜土壤水分为 6 0 %～ 70 %;室温干燥贮藏比室温常规贮藏效果好 ,而高温高湿和低温高湿都导致其发芽率迅速下降。箭根薯种子耐脱水、耐低温和耐贮藏 ,可以用种子库常规的种子保存技术实现长期保存。研究认为 ,目前箭根薯的濒危状态既有物种自身的原因也有生境破坏的原因 ,该物种宜采取就地保护、迁地保护和种子保存相结合的方法进行种质资源保存。

The effects of illumination, temperature and soil miosture content on germination and storage of Tacca chantrieri Andre seeds were studied. The results indicated that T. chantrieri seeds were light-favored ones; the germination took place at a narrow temperature range and high soil moisture content, the optimum temperature was 25-30℃ and the optimum soil moisture content 60%-70%. Dry storage was better way than ordinary storage for the seeds′ vigor to maintenance while the conditions of high temperature with high humidity and low temperature with high humidity resulted to death of seeds. Because this kind of seed was tolerant to desiccation, low-temperature and storage, it could be conserved in seedbank for long-term purpose. For protection of this species, it was need to combine in situ conservation, ex situ conservation and seed conservation.