期刊论文

Study on Seed Morphology and Seed Germination of Calycanthus chinensis

中文

种子

1001-4705

2021

40

02

86-90

10.16590/j.cnki.1001-4705.2021.02.086

国家林业局“十三五”重点学科项目（[2015]44）； 中南林业科技大学研究生科技创新基金项目（20183011）； 湖南省教育厅“十二五”重点学科项目（2011-76）；

本校为第一机构

为了解夏蜡梅种子形态结构和萌发特性,以其种子为研究对象,用体视显微镜结合石蜡切片法观察夏蜡梅种子形态和种胚的解剖结构,用称重法测定不同处理种子吸水率,并统计不同贮藏种子萌发情况。结果表明,夏蜡梅种子呈不规则纺锤状或长圆形,由种皮和胚两部分组成,属双子叶无胚乳种子;外种皮致密坚硬,深褐色、有光泽,透水能力较差,通过刻伤种皮,可显著提高吸水率;内种皮薄膜状,浅褐色,紧贴种胚;种胚发育较为成熟,白色或淡黄色,胚细胞富含淀粉粒,子叶发育良好,两片子叶相互卷合,胚芽分化不明显;湿沙冬藏处理可缩短种子萌发时间并显著提高发芽率,高达（72.22±6.44）%;刻伤种皮处理,可显著提高吸水率,从...

In order to understand the seed morphology and germination characteristics of Calycanthus chinensis,the seed morphology and anatomical structure of C.chinensis embryo were observed by using stereoscopic microscope combined with paraffin section,and seed water absorption under different treatments was measured by weighing method.Also,the seed germination under different storage conditions was also counted.The results showed that the seeds of C.chinensis were irregular spindle-shaped or oblong,composed of seed coat and embryo,and belonged to dico...