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〔Kandelia candel (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 w ere detected in few plants , there were some confusions in the calculatio n methods.In this paper, we compared different methods and their application conditions for the calculation of mutation rate that had been used. Data of mang rove Kandelia candel (L .)Druce were used as an example. If the population is selfing-dominated , the equation μ=QM may give a exact estim ate ;w hereas the equation μ=Fq  may give more exact estimate when outcrossing-dominated .It is suggested that the equation μ= QM be used for comparability .