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作 者:薛华正 吴之扬 陈霞[1] 林康銮 卢国桓[1] 邝炳朝[1]
机构地区:[1]广东省江门市林业局,广东省江门市林业科学研究所,广东省新会市林业局,中国林业科学研究院热带林业研究所
出 处:《林业科学研究》1997年第6期591-598,共8页Forest Research
基 金:广东省桉树发展工程项目
摘 要:以9个桉属树种,其中8个种源来自原产地,7个家系和7个杂种后代来自国内次生资源进行混合比较,5年生评价结果表明:树种、种源、家系呈极显著差异;尾叶桉及其两个种源、尾巨桉杂交种和细叶桉的13544种源适合本试验区工业用材短轮伐期经营,可获得适应性和生长指标平均值超过平均水平35%的选择效应。其中最优为14534号尾叶桉种源,5年生单株材积0.05061m3/株(89.03m3/hm2)。种子采自雷州的大花序桉、刚果12号桉和2个尾叶桉家系,适应性极显著低于平均水平;生长性状远比种子来自东门的差。其主要原因是在雷州更缺乏对上述树种的花粉隔离和种子遗传品质的有效控制。The results of 5year study on Eucalyptus species,provenances and progeny trials involving 9 species and 8 provenances and 14 progenies (including 1 hybrids of E.urophylla×E.grandis) at Xinhui City,in centre of Guangdong Province showed that growth differences among species and provenances and progenies were highly significant.The growth of seedlot No.3 E.urophylla from superior trees of provenance trials (S14534) in Dongmen State Forest Farm of Guangxi region,2 provenances and 1 hybrid of E.urophylla×E.grandis and seedlot No.13544 E.tereticornis form 40 km N of Gladstone,QLD were better of all,with 35% of selecting gain at adaptability and growth characteristics.The best growth performance was from the superior trees of a provenance trails (S14534) in Dongmen State Forest Farm with a highly yield of 89.03 m3/hm2 at the fifth year.There were poor growth performances of seeds selected from Leizhou Forest Bureau of E.cloeziana,E.ABL No.12 and 2 progenies of E.urophylla due to the lack of an effective pollen isolation and a genetic control for seed production.
分 类 号:S792.390.4[农业科学—林木遗传育种]
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