基于层次分析法的乐东拟单性木兰优良种源选择

以乐东拟单性木兰14个种源试验林幼林为材料,利用层次分析方法对其进行综合评价。研究结果表明:乐东拟单性木兰树高、胸径、树冠浓密度、叶面积、造林保存率和叶色6个性状地理种源差异显著,改良潜力大;这6个性状的广义遗传力分别为0.835、0.811、0.857、0.823、0.950、0.708,说明环境因子对这些性状的影响较小,而遗传因子对其影响较大。通过层次分析法对14个乐东拟单性木兰种源进行分析,乐东拟单性木兰种源优劣排序为:SC >XN >LQ >JL >SZ >RS > CJ >MX >QY >LP >RJ >LN >LD >JFL。其中福建顺昌、湖南新宁、浙江龙泉和福建将乐4个种源在浙北地区具有推广和应用价值,而江西龙南、海南乐东及海南尖峰岭3个种源在浙北地区的生长、适应和观赏性状表现较差。

Excellent Provenance Selection of Parakmeria latungensis by Analytic Hierarchy Process

In order to select the excellent provenance of Parakmeria latungensis, the young forests of 14 provenances were investigated and evaluated comprehensively using analytic hierarchy process (AHP). The results showed that there were significant differences in six traits, including tree height, diameter at breast height, crown density, leaf area, leaf color and afforestation preservation rate among different geographic provenances, showing a huge potential for improvement. The broad heritability of these six traits were 0.835, 0.811, 0.857, 0.823, 0.950, and 0.708, respectively, suggesting these traits were mainly controlled by genetic factors instead of environmental factors. The result of AHP showed that 4 provenances of P. latungensis, which derived from Shunchang of Fujian Province, Xinning of Hunan Province, Longquan of Zhejiang Province and Jiangle of Fujian Province, had the higher promotion and application value in the north of Zhejiang, while 3 provenances of P. latungensis, which derived from Longnan of Jiangxi Province, Ledong of Hainan Province and Jianfengling of Hainan Province, performed poorly in terms of growth, adaptation and ornamental characteristics.