以秋茄为例的植物自然缺绿突变率的计算  

On the calculation of spontaneous mutation rates for chlorophyll deficiency in plants: A case study of mangrove Kandelia candel

作　　者：厉宁[1] 陈小勇[1] 

机构地区：[1]华东师范大学环境科学系

出　　处：《植物资源与环境》1999年第2期31-35,共5页Journal of Plant Resources and Environment

摘　　要：突变是遗传变异的最终来源，缺绿突变是植物中最易检测的突变类型。尽管对植物缺绿突变的研究尚不多，但对突变率的计算却存在一些混乱。本文对不同的突变率计算方法及其适用条件进行比较，并以秋茄〔Ｋａｎｄｅｌｉａｃａｎｄｅｌ（Ｌ．）Ｄｒｕｃｅ〕为例进行说明。若种群以自交为主，公式μ＝ＱＭ给出的结果比较可信；在以杂交为主的情况下，公式μ＝Ｆｑ可能会给出更精确的突变率。为便于比较，建议统一采用公式μ＝ＱＭ。Mutation is the ultimate source of genetic variation. Chlorophyll deficient mutation is one of the most easily detected mutants in plants. Though mutation rates were detected in few plants, there were some confusions in the calculation methods. In this paper, we compared different methods and their application conditions for the calculation of mutation rate that had been used. Data of mangrove Kandelia candel (L.) Druce were used as an example. If the population is selfing dominated, the equation μ = QM may give a exact estimate; whereas the equation μ = Fq may give more exact estimate when outcrossing dominated. It is suggested that the equation μ = QM be used for comparability.

关 键 词：缺绿 突变率 计算方法 秋茄 植物 

分 类 号：Q945.11[生物学—植物学]