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通过对滇西南地区15个种源99个旱冬瓜家系苗木的苗高和地径生长量以及造林后18个月幼林的树高和胸径的测定与分析,结果表明:(1)在旱冬瓜的地理种源间存在着丰富的遗传变异,不同种源苗木在苗期及幼林期的高、径生长上均存在着显著差异,表明在滇西南地区开展旱冬瓜优良种源选择十分必要;(2)旱冬瓜苗期入选的优良种源和幼林期入选的优良种源基本一致,这表明旱冬瓜早期选择可为林木的后期良种选育提供参考;(3)表现较为稳定的优良种源为瑞丽、西盟、潞西、陇川种源。
By measuring and analyzing the height and diameter growth of seedlings of 99 families of dry wax gourd from 15 provenances in southwestern Yunnan and the tree height and DBH of 18 years after afforestation, the results showed that: (1) There were abundant genetic variations among geographical provenances. There were significant differences in seedling growth and seedling growth between seedlings of different provenances, indicating that it is necessary to carry out the selection of good provenances for dry wax gourd in southwestern Yunnan. ). The good provenances selected during the seedling stage of dry wax gourd were basically the same as the excellent provenances selected during the young forest. This indicated that the early selection of dry wax gourd melon could provide a reference for future seed selection of forest trees. (3) , Western Union, Luxi, Longchuan provenance.