对几个杨树品种作为亲本的简单评价

辽宁省杨树研究所杨树杂交课题组在1992年、1993年选用辽宁杨、辽河杨、I—69杨作为母本，N3930、义县小钻杨、鞍杂杨、33号杨、中林95杨作为父本进行了杂交试验。文章对杂交所得子代4年生树高、胸径和1年生子代受冻害指数3个性状的数据，按照母本和父本分别进行了方差分析，并对达到显著差异的按照不完全双列杂交设计估算一般配合力方法，估算并比较了各个母本及父本的一般配合力。结果表明，在胸径方面，母本辽河杨、辽宁杨、I—69杨无显著差异，在树高和抗寒性方面，辽河杨比辽宁杨及I—69杨更具有优势；父本的一般配合力大小顺序是：在树高性状上，鞍杂杨＞中林95杨＞33号杨＞N3930杨＞义县小钻杨，在抗寒性方面鞍杂杨＞33号杨＞义县小钻杨＞中林95杨＞N3930。

Evalution on several varieties of poplar taken as parents

Crossing experiments were conducted by selecting Populus liaoningensis , P . liaohenica and P. deltoids cv. Lux as fe-mal parents, and P . euramericana cv N3930 , P. xiaozuanica cv. ' Yixian , P . xiaozuanica cv. Anshan , poplar number 33, poplar Zhonglin 95 as male parent by Poplar crossbreeding Research Group of Liaoning provincial institute of poplar in 1992 and 1993.In this paper,ANOVA was conducted in accordance with male parent and femal parents regarding the data of 3 properties which included height and diameter for 4 years old tree and frozen damage index for one year old trees of the filial generation, and general combining ability of each femal and male parent whose ANOVA results were significant were estimated and comparer by using incomplete dialed Crossbreeding Design methods. The results indicated that: there was no significant diference for diameters of femal parents of P . liaohenica , P . liaoningensis and P . deltoids cv. ' Lux' , and P . liaohenica was dominant over P . liaoningensis and P . deltoids cv. ' Lux regarding height and cold resistance; the order of general combining ability of male parent was as follows: P . xiaozuanica cv. ' Anshan' , poplar Zhonglin 95 , poplar number 33, P . euramericana cv ' N3930 and P. xiaozuanica cv. ' Yixian' regarding properties of height, and P . xiaozuanica cv. ' Anshan' , poplar number 33, P. xiaozuanica cv. 'Yixian' , poplar Zhonglin 95 and P. euramericana cv 'N3930 regarding cold resistance.