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根据1块种植于广东省台山市红岭种子园的湿地松×洪都拉斯加勒比松F1杂种测定林的7年生数据,就杂种的生长量、树干通直度、分枝习性与湿地松、加勒比松进行了比较分析。结果表明,F1杂种的生长优势突出,树高、胸径、材积分别为9.18 m、14.96 cm、0.086 45 m3,相对于湿地松、洪都拉斯加勒比松和古巴加勒比松种子园混合种的材积现实增益分别为315.23%、46.35%、114.89%。此外,杂种的树干通直度得分、冠幅、枝角、枝径、枝数分别为1.54分、3.45 m、68.93°、1.84 cm、3.35条,其树干通直度得分与母本湿地松接近而显著低于父本洪都拉斯加勒比松,冠幅和枝径与父本相似而显著大于母本,枝角介于父、母本之间,枝数与父、母本没有显著差异。
Based on the 7-year-old data of a F1 hybrid measuring Pinus elliottii × Honduras caribbean pine plantation planted in Hongling Seed orchard in Taishan City, Guangdong Province, the 7-year data of hybrids growth, trunk straightness, branchage and Pinus elliottii and Caribbean pine A comparative analysis. The results showed that the growth advantage of F1 hybrids was prominent. The tree height, diameter at breast height and volume were 9.18 m, 14.96 cm and 0.086 45 m3, respectively. Compared with the mixed seed of Pinus elliottii, Honduras Caribbean and Cuban pine seed orchard, 315.23%, 46.35%, 114.89%. In addition, the trunk straightness score, crown width, branch angle, branch diameter and branch number of hybrids were 1.54, 3.45, 68.93, 1.84 and 3.35, respectively. But significantly lower than that of the male parent, the Honduras caribbean pine. The crown width and branch diameter were similar to those of the male parent but significantly larger than that of the female parent. The branch angle was between the father and the female parent, and there was no significant difference between the branch number and the parent.