两种材色兴安落叶松种子生物学特性的比较

Seed Biological Properties of Two Types of Dahurian Larch with Different Wood Color

利用种子生物学的方法对白材兴安落叶松与原种红材兴安落叶松之间的种子性状进行了比较研究 ,结果表明 :白材兴安落叶松千粒重较轻、种翅较长 ,具有较强的随风散播能力 ,开拓新生态位的机会较多 ,具有生态适应上的意义。通过种子发芽生理、解剖质量分析论证了白材兴安落叶松的种子品质优于红材兴安落叶松的种子品质 ,而且差异显著 ,进一步证明了白材落叶松的优质性、较好的生态适应性及独特的竞争能力。

There are white wood Dahurian larch and red wood Dahurian larch in nature. Dahurian larch of red wood is original species. Dahurian larch of white wood is Larix gmelinii(Rupr)Rupr. f. chlorocarpa (Miyabe et Miyake) P.H.Huang et L.H.Zhuo. Seed reproduction is a main way of Dahurian larch's propagation. By means of comparing the seed biological characters of the two types, the results show that Dahurian larch of white wood has lighter weight, longer seed wing and stronger ability of diffusing compared with Dahurian larch of red wood, its ecological amplitude is very wide. The study of physiology of seed budding and mass analysis of dissection prove that the seed properties of Dahurian larch of white wood are obviously better than those of Dahurian larch of red wood. The purpose of analysis is to further testify that Dahurian larch of white wood is a better type with special ability of adaptability and competition.