长柱金丝桃生长发育及人工繁殖技术研究

Study on the Growth,Development and Artificial Propagation of Hypericum ascyron

目的：了解长柱金丝桃形态变化、生长状况及人工繁殖技术。方法：利用现场观察记录形态的变化,测量长柱金丝桃的株高和直径,利用SPSS软件建立生长的数学模型;在人工栽培地进行有性和无性繁殖。结果：长柱金丝桃于每年4月末萌发,5月末出现分枝、6月末开花,8月初为盛果期,10月初种子成熟。株高、叶和分枝变化的Verhaulst模型分别为：H=127.109/1＋23.7441×e-0.062t、L=23.343/＋11.303×e-0.062t、B=22.037/1＋73.068×e-0.068t。无性繁殖中整株移植成活率为100%,分株成活率为67.2%;有性繁殖中种子发芽率为15.2%,移苗成活率在36%。结论：长柱金丝桃生长发育期为4~10月,可以进行人工繁殖。

Objective： To explore the morphological changes,growth conditions and artificial propagation of Hypericum ascyron.Methods： The morphological changes were observed and recorded in the scene,the height and diameter of the plants were measured;the growth Verhaulst model was set up with the SPSS 17.0 software;the sexual reproduction and asexual reproduction were carried out in artificial cultivation.Results： Hypericum ascyron started germinating in late April each year,branching in late May,flowering in late June,the period of full bearing was in early August,seeds were mature in early October.The Verhaulst models of the increase in the height（H）,the quantity of leaf pairs（L） and the branching（B） were,H=127.1091＋23.744×e-0.062t,L=23.3431＋11.303×e-0.062t,B=22.0371＋73.068×e-0.068t.The survival rate of whole graft and segmentation plant were 100% and 67.2% respectively on asexual reproduction;on the sexual reproduction,the seed germination rate was 15.2%,the survival rate of transplant seedlings was 36%.Conclusions：The period of growth and development of Hypericum ascyron is from April to October and it can be carried out artificial propagation.