黑杨派新无性系研究——Ⅱ.生长的适应性和遗传稳定性分析

<正>本文分析了黑杨派新无性系苗期生长的适应性和遗传稳定性。方差分析表明,Ⅰ-69杨X小叶杨和Ⅰ-69杨X欧洲黑杨F1无性系的无性系效应、地点效应和无性系X地点效应均是极显著的。从各无性系的适应性和稳定性指数,预测了它们的适应范围。这些无性系生长和适应性的关系在正方向上是独立的,生长和稳定性的关系是多变的,适应性和稳定性的关系大都也是多变的。

STUDY OF NEW CLONES OF THE AIGEIROS SECTION II. ANALYSIS OF THE ADAPTABILITY AND GENOTYPIC STABILITY OF THE GROWTH IN THE NURSERY

This paper analysed the adaptability and gcnotypic stability of the growth in new poplar clones of the Aigeiros section in the nursery. Variance analysis indicated that the clone effect, site effect and clone x site interaction effect of 1-69 poplat x Simon poplar and 1-69 poplar x Nigra poplar were all highly significant. The regression coefficient (b) and deviation from regression mean square (S) of Eberhart-Russell model, the structural analysis parameters a and of Tai model, the Ecovalence parameter (W) of Wricke and the coefficient of determination (r2) of Pithus were used as adaptability and stability indexes of various poplar clones. Eventually, the correlations among growth, adaptability and stability in new poplar clones of the Aigeiros section were discussed.