当归植株茎不同节位种子质量研究

Study on seed quality at different nodes of Angelica sinensis

选取不同节位当归种子为试验材料,通过种子形态特征、千粒重、发芽试验、种子生活力等方面的研究,对不同节位当归种子质量进行评价。结果表明:第1节位至顶穗,种子呈现从褐色到淡黄色变化规律,颜色由深及浅,大小呈递增趋势;第4节位种子千粒重最大,为1.79 g,顶穗、第2和第5节位次之,分别为1.61、1.35、1.42 g;顶穗种子发芽率最高,为94.3%,第4和第6节位次之,分别为78%、82%;顶穗种子发芽势与其他节位存在显著差异,发芽势明显高于其他节位种子;所有节位种子生活力均在81%以上,种子生活力整体较高。在生产实际中,当归种子留种宜选用在千粒重、发芽率、种子生活力上均有相对优势的第2、3、4、5、6节位和顶穗种子。

The seed quality of Angelica sinensis at different nodes was evaluated by measuring the seed morphological characteristics,1000-grain weight,germination rate and seed viability in order to select high-quality.The results showed that from the first node to the top ear,the seed color changed from brown to light yellow,and the size increased gradually.The 1000-grain weight of seeds from 4th node was the largest(1.79 g),which was followed by apical ear,2 nd and 5th nodes(1.61 g,1.35 g,1.42 g).The germination rate of seeds from apical ear was the highest(94.3%),which was followed by 4th and 6th nodes(78%and 82%).The germination potential of seeds from apical ear was significantly different from that of other nodes.The seed vigor from all nodes was more than 81%.The seeds from 2 nd,3ird,4th,5th and 6th nodes and apical ear were suitable for production because of high 1000-grain weight,germination rate and seed vigor.