3种引进栎类种实形态特征分析

目的]分析3种引进栎类种实形态特征,丰富我国栎类资源,选育栎类良种。方法]以从德国引进的猩红栎(Quercus coccinea Muench)、沼生栎(Quercus palustris Muench)、北美红栎(Quercus rubra L.)及辽宁地区乡土树种辽东栎(Quercus wutaishansea Mary)为研究对象,对其种子形态特征进行研究。结果]不同栎类种子的粒重存在显著差异,最小粒重为沼生栎(1.69 g),最大粒重为北美红栎(5.91 g),二者相差4.22 g;粒长最长的是北美红栎(2.25 cm),粒长最短的是沼生栎(1.33 cm),二者相差0.92 cm;直径最长的是北美红栎(2.07 cm),直径最短的是辽东栎(1.29 cm),二者相差0.78 cm。结论]种子形态指标可作为栎类分类的重要依据。

Morphological Characteristics Analysis of Three Introduced Seed Types of Quercus L

Objective] Morphological characteristics of three introduced seed types of Quercus L.were analyzed to enrich the resources of Quercus L.in China, and to breed the high-quality variety. Method] With Quercus coccinea Muench, Quercus palustris Muench, Quercus rubra L.and Quercus wutaishansea Mary as the research objects, we analyzed the morphological characteristics of seeds. Result] Grain weight had significant differences in different seed types.The minimum grain weight was Quercus palustris Muench (1.69 g on average); the maximum grain weight was Quercus rubra L.(5.91 g on average).The difference of the two was 4.22 g.Quercus rubra L.had the maximum grain length (2.25 cm on average).Quercus palustris Muench had the minimum grain length (1.33 cm on average).The difference of the two was 0.92 cm.Quercus rubra L.had the longest diameter (2.07 cm on average); and Quercus wutaishansea Mary had the shortest diameter (1.29 cm on average); the difference of the two was 0.78 cm.Conclusion] Morphological characteristic index is an important basis for the classification of Quercus L..