湿地松无性系种子园生长及结实性状初步分析

Preliminary Analysis of Growth and Fruiting Traits in the Clonal Seed Orchard of Pinus Elliottii

摘要:

为提高湿地松种子园的产量,以荆门市彭场林场一代去劣湿地松无性系种子园为研究对象,对其生长状况和结实性状进行调查,分析不同无性系生长和结实性状的差异性,并筛选出高结实无性系。结果表明：不同无性系间胸径、冠幅、球果长度、球果直径、球果径高、单株球果总产量和单个鲜果重均存在极显著差异(sg＜0.01),而单果出种量的差异不显著(sg=0.366)；选出排名前3位的高结实无性系,结实量较均值提高了2倍多；根据差异分析的结论,为现阶段优良无性系初步筛选提供方向。

Abstract:

In order to improve the yield of Pinus elliottii seed orchard, the first generation of degraded Pinus elliottii clone seed orchard in Pengchang Forest Farm, Jingmen City was used as the research object to investigate its growth status and fruiting traits, analyze the differences in growth and fruiting traits among different clones, and select high fruiting clones. The results showed that there were extremely significant differences in diameter at breast height, crown width, cone length, cone diameter, cone diameter height, total yield of cones per plant, and single fresh fruit weight among different clones (sg<0.01), while the difference in seed yield per fruit was not significant (sg=0.366); Selecting the top three high yielding clones, the seed yield has increased by more than twice compared to the average; Based on the conclusion of differential analysis, it provides direction for the preliminary screening of excellent clones at present.