摘要
对福建柚(Citrus graudis Osbeck)10个主要品种类型进行了植物形态特征特性观察、花粉生活力与花粉形态观测、叶片 GOT 同工酶分析、染色体数目检查以及若干代表性品种类型的核型分析。结果表明,福建柚资源丰富。各品种类型在主要形态学性状、花粉显微与超显微结构、酶蛋白质分子以及遗传物质载体的各个水平上表现出较大差异,反映其遗传基础的多样性与复杂性,并进一步证实我国是柚的原产地之一。根据所获得的资料,综合分析了各品种类型的特点;同时对这些柚种质资源的利用进行评论。研究得到一些有价值的资料,为我省柚品种鉴定、育种以及开发利用提供科学依据。
The observation of morphological characteristics,the analysis of GOT isozyme by polyacrylamide gel electrophoreses,the comparisons of differences in size and surface ultrastructure of pollen grains by the scanning electron microscope,the examination of chromosome numbers in 10 varieties of pummelos(Citrus grandis Osbeck)in Fujian Province were carried out.In addition,the karyotypes were ana- lysed in 4 varieties among them.The results obtained showed that 10 varieties were quite different in these as- pects,and suggested that there should be some genetic diversity.The study also indicated that Fujian was rich in genetic resources of pummelos.The characteristics and utilizable value of these varieties were comprehensively discussed.The information from the experiment would be useful for classifying and identi- fying,genetics research,breeding and production of pummelos cultivated in Fujian.
关键词
柚
种质资源
pummclo
germplasm
morphology
palynology
GOT isozyme
karyotype
utilizable value
