19个文冠果种源在新疆的性状表现与聚类分析

为文冠果在新疆的进一步推广应用提供科学依据,将19个文冠果种源进行播种育苗试验,研究不同种源文冠果苗期的生长特性及影响因子。结果表明:牡丹江、1号、坤6及经7在各个时期的株高、地径及冠幅均表现最好,经1、椅22及红5表现较差;不同种源文冠果叶片数量存在明显差异,整体变化在12~35片,牡丹江叶片数最多,为35片,与其他种源间差异显著(P0.05),经22、红补4及经18的叶片数较少;聚类分析将19个种源划分为4组,第1组牡丹江综合表现最优,第4组的红补4和坤160等12个种源长势较差。日平均气温与文冠果株高和冠幅呈极显著正相关(P0.01),日平均相对湿度与地径呈显著负相关(P0.05),平均风速与文冠果株高、地径及冠幅无相关性。

Character Performance and Clustering Analysis of 19 Different Xanthoceras sorbifolia Germplasm Resources in Xinjiang

The growth characteristics and influence factors of 19 X.sorbifolia germplasm resources at seedling stage were studied by the sowing and seedling raising test to provide the scientific basis for further popularization and application of X.sorbifolia.Results: The height, ground diameter and crown width of Mudanjiang, No.1, Kun 6 and Jing 7 of X.sorbifolia germplasm resources at different growth periods are the best but the height, ground diameter and crown width of Jing 1, Yi 22 and Hong 5 X.sorbifolia are poor among 19 X.sorbifolia.There is an obvious difference in leaf number among 19 X.sorbifolia germplasm resources and the variation range of leaf number is 12~35.The leaf number of Mudanjiang is the highest (35 leaves)and significantly higher than other germplasm resources.The leaf number of Jing 22, Hongbu 4 and Jing 18 is the lowest.19 X.sorbifolia germplasm resources can be divided into four groups by clustering analysis.The comprehensive performance of Group Ⅰ(Mudanjiang) is the best and the growth vigor of Group Ⅳ is poorer.The daily average temperature is positively related to height and crown width of X.sorbifolia very significantly and daily average relative humidity is negatively related to ground diameter of X.sorbifolia significantly.The average wind velocity has no correlations with height, ground diameter and crown width of X.sorbifolia.