激素处理种子对万寿菊发芽和幼苗生长的影响!

Effects of Hormones-treated Seeds on Germination and Seedling Growth in Marigold( Tagetes erecta L. )

为提高万寿菊成活率,此研究以万寿菊种子为试验材料,以细胞分裂素和"金钾920"对万寿菊种子进行处理。结果表明:浓度为0.15%的细胞分裂素处理种子发芽势、发芽率均最高,分别达到78.3%、85.0%。不同激素处理对万寿菊胚芽的生长速度有一定促进作用,0.15%细胞分裂素处理胚芽长势最好,高于CK处理47.1%。随着两种激素浓度的增加,万寿菊胚根的生长速度均呈现下降的趋势,0.20%的"金钾920"处理对胚根生长的抑制作用最显著,低于CK处理38.3%。不同激素处理对万寿菊幼苗的鲜重、干重均有一定促进作用,只有0.10%的"金钾920"处理的干重和对照组相比没有差异,0.20%的细胞分裂素处理的鲜重、干重值最大,分别高于CK处理36.4%、35.3%。

In order to improve the germination rate and seedling growth in marigold,seeds were treated with cytokinin and plant growth regulator ＂gold potassium 920＂. The results showed that highest germination potential and germination rate of 78. 3% and 85. 0%were obtained in 0. 15% cytokinin treatment. Different hormone treatments had a certain role in promoting plumule growth, with47. 1% higher in 0. 15% cytokinin treatment compared to CK treatment. With increasing concentration of both hormones, radicle growth showed a downward trend. 0. 20% of the ＂gold potassium 920＂treatment had the most significant inhibition on radicle growth,which was 38. 3% lower than CK treatment. Hormone treatments also had promoting effects on marigold seedling fresh weight and dry weight,with an exception of 0. 10% ＂gold potassium 920＂treatment which had no difference compared to CK. 0. 20% cytokinin treatment had the maximum value of fresh weight and dry weight,which was 36. 4%,35. 3%,higher respectively than CK treatment.