美洲黑杨7个新无性系在江苏的选育  

The Selection of Seven New Clones from Eastern Cottonwood Seedlings at Jiangsu Province

作　　者：赵汉章[1] 权婉华 张林芳 朱海格 

机构地区：[1]中国林业科学研究院林业研究所 [2]江苏省铜山县林业局

出　　处：《林业科学研究》1993年第1期12-18,共7页Forest Research

摘　　要：从美洲黑杨的原产地直接引进不同种源的种子,进行实生苗选育,第一次培育出了适合我国气候土壤条件的美洲黑杨新无性系。选出的7个新无性系中有4个属南方型,其生长、适应性、抗逆性及材性等指标均优于I-69、I-72杨。可在江淮亚热带地区推广。有3个属北方型,其生长等各项指标均超过I-214杨,可在华北、东北较湿润地区试种推广。是我国用于短周期工业用材杨树人工林的理想新品系。This is the first time that seven new clones have been successfully selected from the eastern cottonwood seedlings introduced from North America in 1982 in China. Among the seven new clones, four clones are attributed to the southern ecotype whose characteristics of growth, adaptability, resistance and wood quality are superior to those of P. deltoides cv. 69/55 and P. x euramericancc cv. 72/58. Those clones can be planted in the temperate zone and subtropic zone of China. The other three clones are the northern ecotype which have better characteristics of growth, adaptability, resistance and wood quality than those of P. x euramericana cv. I-214. They can be planted in the moist northern and eastnorthern areas of China. Those new clones will be the good cultivars to be used for poplar plantations with short rotation.

关 键 词：美洲黑杨 无性系 选择育种 江苏 

分 类 号：S792.110.4[农业科学—林木遗传育种]