论文部分内容阅读
目的:研究川泽泻种子形态和发芽特性的差异。方法:采集4个川泽泻地方种,测定其种子净度、千粒重、含水量、生活力和发芽率,研究不同温度对其发芽率的影响。并进一步研究其种子长度、宽度的相关性,以及千粒重、生活力与发芽率之间的相关性。结果:4个川泽泻地方种种子的外观形态和各种物理特性指标都存在显著差异,其中彭山县的种子最大,其长、宽分别为1.882,1.455mm,千粒重、生活力、发芽率均最高,分别为0.4308g,86%,82%。雅安的种子净度最高,含水量最低,依次为92.3%,12.1%。不同温度对其种子的萌发也存在显著差异,不同产地的川泽泻种子发芽率在30℃下均最高。川泽泻种子长度与宽度呈极显著正相关,千粒重分别与其生活力、发芽率均呈显著正相关,用溴麝香草酚蓝法(BTB)法测定的种子生活力与发芽率呈极显著正相关。结论:彭山的种子质量最高,都江堰的次之,五通桥区的最低,这为泽泻的生长发育及栽培生产提供一定的依据。
Objective: To study the difference of seed morphology and germination characteristics of Methods: Four species of Chuanzhexie were collected and their seed purity, 1000-grain weight, water content, viability and germination rate were measured. The effects of different temperature on the germination rate were studied. And further study the correlation of seed length and width, as well as the correlation between 1000-grain weight, viability and germination rate. Results: There were significant differences in the appearance and physical properties among the four species of Chuanzai. The seeds of Pengshan County were the largest with the length and width of 1.882 and 1.455 mm, respectively. The grain weight, viability and germination rate The highest, respectively, 0.4308g, 86%, 82%. Ya’an highest seed purity, the lowest water content, followed by 92.3%, 12.1%. There were also significant differences in seed germination at different temperatures. The germination rate of Zea kepitiao seeds from different areas was the highest at 30 ℃. There was a significant positive correlation between the seed length and width of Chuanzai algae, and the 1000-grain weight had significant positive correlation with its viability and germination rate. The seed viability and germination rate determined by the method of bromothymol blue (BTB) Related. Conclusion: The highest seed quality of Pengshan is the second highest in Dujiangyan and the lowest in Wutongqiao, which provides a basis for the growth and development of Alisma orientalis and its cultivation and production.