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对24个桉树杂交新种/子代(包括母本自由授粉子代)的速生性、抗逆性、形质性状进行测定与分析,经多性状综合评判,选出适合闽南山地发展的5号(E.u3101×E.g18705)、15号(E.u3101×E.g18741)、21号E.u3101×E.(G×U)等11个速生性、适应性和抗逆性强的优良杂交种/子代(家系)和41个优良单株。优良家系5.5 a生树高、胸径和材积年均生长量达2.4~3.0m、2.3~3.1 cm和0.018~0.035m3且抗风性强,形质性状优良,材积比对照(U6)增益43.60~186.16%;优良单株的材积在0.18 m3以上。为优良杂种单株的无性系化和进一步的桉树杂交育种提供了有效的遗传材料。
The fast-growing, stress-resistant, and trait-forming traits of 24 new hybrids / offspring of eucalyptus (including the free pollination of female parent) were determined and analyzed. Based on the comprehensive evaluation of multi-traits, (E.u3101 × E.g18705), No.15 (E.u3101 × E.g18741), No.21 E.u3101 × E. (G × U) and other 11 fast-growing, good adaptability and strong resistance Hybrids / offspring (pedigrees) and 41 elite individuals. The average annual growth of tree height, DBH and volume of excellent family 5.5 a was 2.4-3.0 m, 2.3-3.1 cm and 0.018-0.035 m 3, with strong wind resistance and good quality traits. The volume gain of U6 was 43.60 ~ 186.16%; excellent single plant volume of 0.18 m3 or more. Which provided effective genetic material for the clonalization of excellent hybrid plants and further eucalyptus cross breeding.