濒危药用植物短柄乌头丽江居群繁殖生物学研究

Researches on Population,Reproductive Biology and Protection Measures of Aconitum Brachypodum in Lijiang Region

目的:短柄乌头(Aconitum brachypodum)的居群与繁殖生物学特性进行研究,探明居群的繁殖特性。方法:对短柄乌头居群生境进行初步研究,对短柄乌头生育期、花开放动态、结实率、传粉媒介进行观察。结果:短柄乌头为雌雄同株异花传粉,传粉昆虫多为熊蜂,其结实率高,种子多而小,成熟期不一致。结论:短柄乌头的濒危原因主要是人为因素导致。

Objective： Aconitum brachypodum is an endangered species with a very small distributional area. To find out the possible cause of distributional limitedness, the population and reproductive biology were observed. Method ： The environment of Aconitum brachypodum was observed, the developmental process from flower bud to fruit was observed and discussed in this paper, and the pollination efficiency, the fertility, pollination insect and the plan of action pollination process was observed and discussed. Results ： It was clear that the breeding behavior of Aconitum brachypodum belongs to cross - pollinate. The pollination insects are most bumblebees, the pollination efficiency and the fertility is very high, and the developing of the seed embryo is irregular. Conclusion： Population biology and the reproduction biology preliminary study of Aconitum brachypodum is all very important to its generation extension and even the evolution, so the consummation of this thesis provides the theory basis of protection and the direction of scientific cultivation and logical using.