モミ雄花の花粉産出量

概要

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Pollen yields per strobilus of Abies firma, in terms of grain number and dry weight, were measured in two productive years. Male strobili from three trees, 60 to 70 years old, in the Kyoto Prefectural University Campus were sampled on suitable dates before pollen release in 1993 and 1995. Pollen yields per strobilus were estimated by multiplying the pollen quantities per stamen by the number of stamens per strobilus. The mean number of stamens per strobilus ranged from 97.4 (Tree#3 in 1995) to 117.3 (Tree#1 in 1993). The quantities of pollen per stamen varied among sample trees and years. The mean numbers of pollen grains per stamen were 1,936 in 1993 and 2,251 in 1995, and the mean dry weights were 0.3333mg and 0.2825mg, respectively. The mean numbers of pollen grains per strobilus were estimated to be 211.0×10^3 in 1993 and 240.7×10^3 in 1995, corresponding to mean weights of 36.10mg and 30.30mg, respectively. The dry weight of a single pollen grain, obtained by dividing the weight by the number of pollen grains per stamen, was in the range of 106 (Tree#3 in 1995) to 203 (Tree#3 in 1993)×10^<-6>mg, and the mean weight was 176×10^<-6>mg in 1993 and 130×10^<-6>mg in 1995.
日本花粉学会の論文
2006-12-31