姥山林场杉木初级种子园球果类型及其种子分布特征

The Female Cone Types and Seed Distribution of Chinese Fir in Laoshan Seed Orchard

1988～1989年,对浙江姥山林场杉木初级种子园的杉木球果类型、苞鳞、同一球果苞鳞的形态变异、不同杉木球果类型种子分布规律及其好粒、涩粒和空粒种子含量进行了分析。认为杉木涩粒种子含量与球果类型相关并受遗传因子的控制,用长鳞松张及半圆松张型球果而且目的性状遗传型优良的杉木接穗,有利于种子园丰产优质。

During 1988-1989, a study was made in Laoshan seed orchard on the Chinese fir cone types, the bract-scale, the form variation of the bract-scale in same cone, the seed distribution in different cones, and the number of good seeds, woody seeds and empty seeds. The results showed that the number of the woody seeds was correlative with the cone types, and was controled by genes of seedy trees. The application of Chinese fir scions, whose seed trees produce long loose bract-scale cones, semicircle loose bract-scale cones, and have superior genetic characters, was beneficial to the improvment ofquality and yield of the seed orchard.