国槐无性系区域对比试验分析

Regional comparative test analysis of Sophora japonica clones

国槐(Sophora japonicaL.)为豆科(Leguminosae)槐属(SophoraLinn.)多年生落叶乔木。在我国有着悠久的栽植历史,基于无性系区域对比试验分析方法,该试验以11个不同国槐优良无性系为材料,对河北省易县、滦南和故城3块试验林的无性系生长量进行单点对比分析及多点联合方差分析,并对其稳定性、丰产性进行测定,对无性系生长表现做出初步评价。结果表明:11个国槐无性系的树高和胸径均存在显著差异;故城试验林表现最优的无性系为Y4,滦南试验林表现最优的无性系为Y2,易县试验林表现最优的无性系为Y1。综合稳产和高产指标,树高生长最理想的无性系为Y1、Y4;胸径生长最理想的无性系为Y7、Y8。无性系稳定性分析表明,在3块试验林中丰产性和稳定性均表现良好的无性系是Y7、Y4,具有良好的育种潜力。该结果对选育出生长速度快、适应性强、观赏性好的国槐优良品种具有十分重要的理论和应用价值。

Sophora japonica L.is a perennial deciduous tree of the genus Sophora Linn.in the Leguminosae family.With a long history of planting in China.Based on the method of regional test analysis,taking 11 excellent clones of Sophora japonica as materials,this experiment carried out single point comparative analysis and multi-point joint analysis of variance on the growth of clones in Yixian,Luannan and Gucheng in Hebei province,and measured their stability and high yield,making apreliminary evaluation on the growth performance of clones.The results showed that:the analysis of variance showed that there were significant differences in tree height and DBH among 11 Sophora japonica clones.The best performance clone of Gucheng experimental forest was Y4,the best performance clone of Luannan experimental forest was Y2,and the best performance clone of Yixian experimental forest was Y1.According to the indexes of stable yield and high yield,the best clones for tree height growth were Y1 and Y4.The clones with the best DBH were Y7 and Y8.Clonal stability analysis showed that the clones with good yield and stability in the three experimental forests were Y7 and Y4,which had good breeding potential.The results were of great theoretical and practical value for breeding excellent varieties with fast growth rate,strong adaptability and good ornamental value.