高盆樱桃种子萌发特性初探

Germination Characteristics of Cerasus cerasoides Seeds

摘要:

高盆樱桃 Cerasus cerasoides 原生于西藏和云南地带，为我国唯一冬季开花的樱属树种。其树形优美，花色艳丽，造景效果好，目前多应用于云南地区的绿化及造林。为探索高盆樱桃种子的萌发特性，测定其长、宽、厚、百粒重、吸水特性、发芽特性以及芽苗质量指标，并初步探索种子大小对种子萌发的影响。结果表明：高盆樱桃种子浅褐色，呈卵圆状；平均长 10.56 mm，平均宽 7.89 mm，平均长宽比为 1.34，平均厚 6.06 mm，平均百粒重为 25.48 g；在培养皿铺纱布保湿的环境下种子发芽率为 42.67%；大种子发芽势、发芽率等数值均高于中、小种子，种子大小与发芽率呈正相关。

Abstract:

Cerasus cerasoides is the only winter flowering species of Cerasus in China, which is native to Tibet and Yunnan. C. cerasoides is beautiful in shape and color, which has good landscaping effect. At present, it is mostly used in afforestation in Yunnan Province. In order to explore the germination characteristics of C. cerasoides seeds, the length, width, thickness, 100-grain weight, water absorption properties, germination rate and seedlings growth of the seeds were observed. Meanwhile, the effect of seed size on its germination was studied. The results showed that the seeds of C. cerasoides were light brown and oval-shaped, with an average length of 10.56 mm, an average width of 7.89 mm, an average length-to-width ratio of 1.34, an average thickness of 6.06 mm, and an average 100-seed weight was 25.48 g. The germination rate was 42.67% under the condition of moistening with gauze in the culture dish. The germination potentiality and germination rate of large seeds were higher than those of medium and small seeds, and the seed size was positively correlated with germination rate.