6个果桑品种主要性状调查与染色体倍性测定

Investigation on Main Characters and Chromosome Ploidy Determination of Six Mulberry Varieties

作者对黑龙江省6个果桑品种资源进行性状调查和染色体观察。结果表明,‘龙桑1号’具有染色体数为28和42的细胞,是四倍和六倍的混合体;‘选2’为自然六倍体;‘龙椹1号’‘选3’‘选4’‘矮化1号’均为四倍体。该研究对高寒地区桑树资源的发掘与创新利用具有重要意义。

The authors investigated the characters and chromosomes of six mulberry varieties in Heilongjiang Province.The results demonstrated that the number of chromosomes for‘Long Sang1’is either 28 or 42,indicating that‘Long Sang1’can be either tetraploid or hexaploid.‘Xuan2’is hexaploid.while‘Long Shen1’,‘Xuan3’‘Xuan4’‘Aihua1’are all tetraploid.This study is of great significance to the exploration and innovative utilization of mulberry resources in high altitude and cold regions.