湿地松无性系种子园结实性状初步分析

preliminary Analysis of seed setting Traits in clonal seed orchards of pinus elliottii

摘要:

以荆门市彭场林场湿地松无性系种子园为研究对象,对无性系结实性状进行调查,分析不同无性系间结实性状 的差异性,并筛选出高结实无性系,为湿地松种子园去劣留优疏伐提供参考 。结果表明: 不 同无性系间球果长度、球果直 径、单个鲜果重和单株球果总产量均存在极显著差异,单株产种量存在显著差异,而单果出种量的差异不显著 。利用单株 产种量开展优良无性系的初步选择,选出排名前 3位的高结实无性系,为现阶段优良无性系初步筛选提供依据。

Abstract:

In order to improve the yield of pinus elliottii seed orchard, the first generation of degraded p. elliottii clone seed orchard in pengchang Forest Farm,Jingmen city was used as the research object to investigate the fruiting traits of the clones, analyze the differences in fruiting traits among different clones , and select high fruiting clones . The results showed that there were extremely significant differences in cone length, cone diameter, total yield of cones per plant, and single fresh fruit weight among different clones, significant differences in seed yield per plant while the difference in seed yield per fruit was not significant. The seed yield per plant can be used as visible indicators for the initial selection of excel- lent clones; selecting the top three high yielding clones . It provides direction for the preliminary screening of excellent clones at present.