A Study of Growth Development of Male Strobilusand Pollen Collection of Masson Pine

T hem orphologica l deve lopment ofM asson pine indicates that the flower tmi ing and number ofm ale flow ers areclosely related to the location, latitude, so il condition, seed source and age ofMasson pine trees. These factors should betaken under consideration in the course of plann ing and establishing a pine pollen production base. T hemorphological developm ent ofM asson pinemale flowers lasts from earlyOctober to the end of nextM arch, which can be div ided into 5 phases, namely w inter buds, flower buds, color chang ing, m aturity and pollen scattering. The surface of sma ller strobiliw ith inthe co lor changing turns from green to ye llow, suggest ing the gradual ripening of pollens. The period betw een color chang ing and pollen scattering is the best tmi e for pollen harvest. Them ain ways o fpo llen co llect ion at present are beating tw igsand picking spikes off trees. In long term s, techniques of pine po llen production and m anagem ent shou ld be perfected bydw arfing trees and innovat ing pollen co llection m ethods.