影响滇重楼种子萌发及胚根生长因素的研究

目的：为滇重楼种子育苗提供理论指导。方法：采用去除种皮、不同温湿度处理、赤霉素处理、不同种子来源实验,观察滇重楼种子萌发及胚根生长情况。结果：种皮及低温对滇重楼种子萌发及胚根生长的抑制作用明显;外源赤霉素在常温下对滇重楼种子的萌发没有影响,但可以打破低温对滇重楼种子萌发及胚根生长的抑制作用;滇重楼种子萌发和胚根生长的适合湿度范围较宽;不同来源的种子,主要由于成熟度的差异,种子萌发及胚根生长情况差异明显。结论：在滇重楼种子育苗过程中,要选择成熟果实的种子,去除种皮和赤霉素处理均可提高滇重楼种子发根率和发根速度。

Study on Factors Influencing the Seed Germination and Radicle Growth of Paris polyphylla Smith var yunnanensis(Franch.)Hand.-Mazz

Objective： To explore the factors influencing the seed germination and radicle growth, and provide technical guidance for seed breeding and reproduction of Paris polyphylla. Smith var. yunnanensis （ Franch. ） Hand. - Mazz. Methods ： To study the effect of seed coat, temperature, GA3 , humidity, different provenance on the seed germination and radicle growth of Paris polyphyUa. Smith var. yunnanensis （Franch.） Hand. -Mazz. Results： The seed coat and Low temperature has a obvious inhibitory effect for the seed germination and radicle growth of Paris polyphylla. Smith var. yunnanensis （ Franch. ） Hand. - Mazz ; GA3 can break the inhibition on seed germination and radicle growth caused by low temperature; The seed has a broad range of humidity for seed germination and radicle growth ; The seeds from different provenance, largely because of the dif- ferent maturity, get a completely differences on seed germination and radicle growth. Conclusion： in the seed breeding process for Paris polyphylla yunnanensis （ Franch. ） Hand. - Mazz, We should select good maturity seeds for the seed breeding, Both removing the seed coat and GA3 treatment can improve the seed germination and radicle growth rate.