A Study of Fruiting Characteristics of Pinus kesiya var.langbianensis in Clonal Seed Orchard
XU Yu-lan · Xibu linye kexue · 2006
The fruiting characteristics of Pinus kesiya var.langbianensis in Puwen experimental forest farm of Xishuangbanna in Yunnan province was studied.Four aspects of results were gotten as follows:1) Pinus kesiya var.langbianensis took almost two years from blooming to cone maturation.2) The cones of Pinus kesiya var.langbianensis mainly distributed at the middle part of crown,accounted for 62.5 % of the total amount.3) The fruiting rate varied very much with different clones,and the fruiting rate was low.There were significant variation on weight of cone,seed production of cone,seed weight and seeding rate;whereas the variation on fruit length,fruit diameter and 1 000seed weight were not significant.4) The fruiting characteristics of superior trees of different provenances were different,that of Manxieba provenance of Simao was good.