广西植物Issue(3)：333-337,392,6.DOI:10.3969/j.issn.1000-3142.2014.03.010
濒危植物大别山五针松母树林花粉传播规律
Pollen dispersal patterns of the endangered plant Pinus dabeshanensis in a seed production stand
摘要
Abstract
Pinus dabeshanensis is a typical wind-pollinated plant,of which the pollen dispersal makes a crucial compo-sition of the gene flow.The pollen dispersal and its spatial distribution in seed production stand of P .dabeshanensis by using traditional paraffin section method were investigated,and the relationship among meteorological factors, planting density and the pollen dispersal pattern analyzed.The results showed the pollen begins to disperse in the middle of May,with a period of 14 days and the peak dispersal of 3 days.Moreover,the pollen density of smaller planting density on the downhill slope seems higher than that of the uphill slope where had a higher plantation densi-ty.Furthermore,the maximum pollen density per day was between 10:00 a.m.and 14:00 p.m.;and the higher pol-len density was at the upper part of plants,the highest density was at 50 m from the pollen source.Therefore,we sug-gest to transplant plants from higher density for promoting the flower bud development and improving the seed quality.关键词
大别山五针松/母树林/花粉密度/移栽Key words
Pinus dabeshanensis/seed production stand/pollen density/transplantation分类
农业科技引用本文复制引用
项小燕,张小平,段仁燕,徐延年,吴甘霖..濒危植物大别山五针松母树林花粉传播规律[J].广西植物,2014,(3):333-337,392,6.基金项目
国家林业部公益性项目(201304314) （201304314）
