黑杨派杨树杂交育种研究初报

Cross breeding of Black Poplar

利用Ｉ—７２／５８杨×（Ｉ—６９／５５×Ｉ—６３／５１）杨进行杂交育种，用常规方法，选出沂林杨９９、２２、１１、５８、１３、２６和９１号７个无性系，其３年生幼树树高、胸径生长量均大于Ｉ—７２／５８杨１５％以上，表现出明显的生长优势。

Abstract Seven chones (Yilin poplar 99,22,11,58,13,26,91)were selected from cross breeding of Ⅰ-72/58×(Ⅰ-69/55×Ⅰ-63/51) with conventional methods.The growth of height,diameter breast height of these three year clones are all greater than 15% above contrasting with Ⅰ-72/58,showing distinct growth dominance.