喜马拉雅紫茉莉种子质量及萌发特性研究

Study on the Germination Properties and Quality of Seeds of Mirabilis himalaica

以芒康县、朗县、桑日县与尼木县等不同种源地的喜马拉雅紫茉莉种子为试验材料,对种子的内外部形态特征、种子质量进行了观测,并对芒康县喜马拉雅紫茉莉种子的萌发特性进行了研究。结果表明:喜马拉雅紫茉莉种子为卵圆形或椭圆形,黑色或褐色,种子长(4.42±0.68)mm,宽(2.51±0.09)mm,表面粗糙,具有凹凸不平的嵴。千粒重(16.19±2.14)g,含水量13.24%,生活力90.13%,纯净度92.71%;随着贮藏时间的延长,种子的发芽率逐渐提高,种子有褪变现象;黑暗条件更有利于种子萌发,为喜马拉雅紫茉莉的大田播种需覆土提供了理论支撑。

In this experiment, Mangkam County, Langxian county, Sangri county and Nyemo County of different provenances of Mirabilis hamalaica seeds as experimental material, the internal and external morphological characteristics, seed quality of seeds were observed and measured. Makeing the germination test with different storage time in Mangkam CountyMirabilis hamalaica seeds as material. The results show that： Mirabilis hamalaica seed ovoid or ellipsoid, black or brown, seed length of （4.42 ± 0.68 ） mm, （ 2.51 ± 0.09 ）mm width ,surface roughness ,with jagged ridge. The thousand-grain weight of （16.19 ± 2.14 ）g,water percentage 13.24%, the life force of 90.13 %, purity of 92.71%. With the extension of storage time, the germination rate of the seeds increased gradually, the seed has a degenerative phenomenon; dark conditions more conducive to seed germination, it will provide the theoretical support for cultivation of Mirabilis hamalaica.