野菊花种子发芽特性的研究

目的:通过对不同前处理、外源激素和不同温度的研究,找出野菊花种子合适的发芽条件,从而为野菊花的规范化栽培提供一定的依据。方法:测定了供试野菊花种子的净度、千粒重、含水量及种子活力等。利用不同前处理(酸处理、碱处理、温水浸泡、沸水浸泡)、不同激素(IBA、NAA、6-BA)、不同温度(10、20、25、30℃)等处理对野菊花种子进行发芽试验,测定发芽率、发芽势及发芽指数。结果:供试野菊花种子净度99.4%,千粒重0.2941 g,含水量4.39%,种子活力85.3%;前处理试验并没有提高野菊花种子的萌发率;不同激素对野菊花萌发影响较小;温度对野菊花种子发芽率及发芽势的变化影响明显。结论:温水浸种后,在25℃光照条件下进行纸上培养是野菊花种子萌发比较合适的条件。

Study on germination characteristic of seed of Dendranthema indicum

Objective:To find out the optimum condition for the germination of seed of Dendranthema indicum by studying the effects of pretreatment,phytohormone and temperature on it,and offer the basis for its standardized culture.Methods:The seed purity,weight per 1000 seeds,seed moisture content and seed viability were determined.The germination of D.indicum seed was tested under following conditions: pretreatment(acid,base,warm water,boiling water),phytohormone(IBA,6-BA,NAA)and treatments under different temperature(10,20,25,30 ℃).Results: The seed purity was 99.4%;The weight per 1000 seeds was 0.2941g;The seed moisture content was 4.39%;The seed viability was 85.3%;The tests of pretreatment couldn’t increase the germination of D.indicum seed;Phytohormone had limited effect on the germination of the seed;Temperature condition showed significant effects on the germination.Conclusion:The optimum condition for the germination of the seed of D.indicum is 25 ℃ on filter paper.