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2001年在信宜林科所营建了马尾松99个杂交组合测定试验林。试验结果表明:马尾松杂交组合间树高、胸径、材积和产脂差异呈极显著水平,组合间具有较大的选择潜力。根据聚类分析划出3种类型组合,即高脂型(Ⅰ)、中脂速生型(Ⅱ)、中脂型(Ⅲ)。高脂型(Ⅰ)为优良类型的组合,占总数的28.7%。文章还估计了材积和产脂量2个性状与母本对比的杂种优势,选出了前30名的组合。
2001 in Xinyi Linke build a masson pine 99 hybrid test forest. The results showed that there were significant differences in tree height, DBH, volume and fat production between the two hybrid combinations of Pinus massoniana and their potential for selection. According to the cluster analysis, three types of combinations were identified: high fat type (Ⅰ), medium fat fast type (Ⅱ) and medium fat type (Ⅲ). High-fat type (Ⅰ) is a good type of combination, accounting for 28.7% of the total. The article also estimated the heterosis of the two traits of volume and fat yield compared with the female parent, and selected the top 30 combinations.