七叶一枝花采种母株繁殖技术研究

Research on the Propagation Techniques of the Seed-collecting Mother Plant of Paris Polyphylla var.Chinensis

为研究七叶一枝花采种母株繁殖技术的影响因子,通过2年田间重复试验,探究七叶一枝花根茎不同部位切段、不同刻痕数、不同种植时间和不同药剂处理对母株第1年的出苗率、种子产量及病害发生情况的影响。结果表明:带顶芽根茎繁殖的出苗率达到(90.3±3.6)%,而无顶芽根茎繁殖的第1年出苗率为0。刻痕数对根茎出苗率影响不大,但对种子产量影响显著,7、8和9个刻痕数的根茎繁殖的种子产量显著高于刻痕数小的根茎繁殖。种植时间方面,11月份繁殖的母株出苗率和种子产量明显优于3月份。根茎种植前用50%多菌灵500倍稀释液浸泡10 min,母株发病率低于其他药剂处理。综合分析表明,七叶一枝花母株繁殖技术要点为:秋季采用刻痕数7个以上带顶芽的根茎,经50%多菌灵500倍稀释液浸泡10 min后种植,并于次年采收种子。

In order to study the factors influencing the propagation techniques of the seed-collecting mother plant of Paris polyphylla var.chinensis,through 2-year field repeated trial,the effects of different root segments of Paris polyphylla var.chinensis,different number of scores,different planting time and differents treatments with different chemicals on the emergence rate,seed yield and disease occurrence of the mother plant in the first year were explored.The results showed that the emergence rate of the propagation by rhizomes with top buds reached 90.3±3.6%,while the emergence rate of the propagation by rhizomes without top buds in the first year was 0.The number of scores had little effect on the emergence rate of rhizomes,but it had significant effect on the seed yield.The seed yield of Paris polyphylla var.chinensis with 7,8,and 9 scores of rhizomes was significantly higher than that with small scores multiply.In terms of planting time,the emergence rate and seed yield of the mother plants bred in November were significantly better than those in March.Before planting,by soaking the rhizomes in 50%carbendazim 500 times diluent for 10 min,the incidence of the mother plant was lower than that treated with other chemicals.To sum up,the main points of the propagation techniques of the mother plant of Paris polyphylla var.chinensis were as follows:the rhizomes with more than 7 scores of top buds in the autumn were soaked in 50%carbendazim 500 times diluent for 10 min before planting,and the seeds were harvested in the following year.