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为确定橡胶草人工育苗合理播种期,进一步促进橡胶草种质资源有效保护和利用,通过发芽试验,分析了不同发芽温度和冷热预处理对橡胶草种子发芽特性的影响。结果表明,温度对橡胶草种子发芽率、发芽势、发芽指数和活力指数影响极显著,25℃是橡胶草种子发芽最适温度,5~35℃范围内,随温度升高,种子开始发芽所需时间缩短,发芽持续时间为长-短-长,25℃时萌动期为2天,发芽周期为6天。冷热预处理对橡胶草种子发芽率影响不显
In order to determine the reasonable sowing date of artificial rubber seedling, and to further promote the effective protection and utilization of rubbery germplasm resources, the effects of different germination temperature and hot and cold pretreatment on the germination characteristics of rubber seeds were analyzed by germination test. The results showed that temperature had a significant effect on the germination rate, germination energy, germination index and vigor index of S. japonicus seeds. 25 ℃ was the optimum temperature for seed germination of S. japonicus. When the temperature increased from 5 to 35 ℃, the seeds began to germinate Take time to shorten the duration of germination is long - short - long, 25 ℃ germination period of 2 days, germination cycle of 6 days. The effect of hot and cold pretreatment on the germination rate of rubber seeds was not significant