乌梅类杨梅四倍体种质鉴定分析

Identification and Analysis of Tetraploid Germplasm of Myrica rubra

[目的]对乌梅类杨梅四倍体种质进行鉴定分析,为杨梅育种提供材料基础。[方法]通过染色体检测、果实外观、质量和品质等表型性状的测定,对四倍体2008X4进行鉴定。[结果]2008X4的染色体数目为32条,与‘荸荠种’(16条)相比染色体数量加倍,为四倍体材料,且在单果质量、纵径、横径、可溶性固形物、总糖、葡萄糖、糖酸比、V C等果实质量和品质性状上显著高于‘荸荠种’。[结论]该乌梅类四倍体材料可作为目标优株,也可为优质大果的倍性杂交育种提供亲本选择。

[Objective]The identification and analysis of tetraploid germplasm of Myrica rubra were carried out to provide material basis for breeding of Myrica rubra.[Method]The tetraploid 2008X4 was identified by chromosome test,fruit appearance,quality and other phenotypic characters.[Result]The number of chromosomes of 2008X4 was 32,which was double as that of‘Biqizhong’(16)which was a tetraploid material,and it was significantly higher than that of‘Biqizhong’in fruit quality and quality traits such as single fruit weight,lengthwise diameter,broadwise diameter,soluble solids,total sugar,glucose,sugar acid ratio,vitamin C.[Conclusion]The tetraploid material can be used as the target excellent plant,and lay the material foundation for the new variety selection of high quality,big fruit and the parent selection of hybrid breeding.