烤烟叶绿素含量遗传分析  

Genetic analysis of chlorophyll content in flue-cured tobacco leaf

作　　者：张兴伟[1] 王志德[1] 牟建民[1] 刘艳华[1] 任民[1] 

机构地区：[1]农业部烟草类作物质量控制重点开放实验室,中国农业科学院烟草研究所,青岛市266101

出　　处：《中国烟草学报》2011年第3期48-52,共5页Acta Tabacaria Sinica

基　　金：国家烟草专卖局专项“中国烟草种质资源平台建设”项目(国烟办综【2005】501号);中国农科院基本科研业务费专项资助(0032010036)

摘　　要：应用主基因+多基因6个世代联合分析方法对烤烟丸叶×Coker319组合的总叶绿素含量性状进行了分析。结果表明:丸叶×Coker319组合的总叶绿素含量受1对加性-显性主基因+加性-显性-上位性多基因控制,主基因加性效应为-5.89,主基因显性效应为-3.47;B1、B2和F2世代总叶绿素含量的主基因遗传率分别为3.61%、46.11%和48.94%;多基因遗传率分别为52.04%、8.25%和0.00%,说明F2世代总叶绿素含量表现出较高的主基因遗传率,并受环境影响。对烤烟总叶绿素含量的改良要以主基因为主,同时注意环境的影响。Mixed major-gene plus polygene inheritance model was used to analyze inheritance of SPAD reading with six generations（P1,P2,F1,B1,B2,and F2） of flue-cured tobacco（N.tobacum L.） cross between Wanye and Coker319.Results showed that SPAD reading was controlled by a single gene with additive-dominance effect plus polygenes with additive-dominance-epistatic effect（D0 model）.The additive effect of major gene was-5.89,and dominant effect of major gene was3.47.The major gene heritabilities in B1,B2 and F2 were 3.61%,46.11% and 48.94% respectively,and the corresponding polygenic heritabilities were 52.04%,8.25% and 0.00% respectively.These results indicated that major gene in F2 was a key factor and environmental factor was also relatively important.This implies that major-gene is a main factor in genetic improvement of SPAD reading whereas environmental effect should also be taken into consideration.

关 键 词：烤烟 叶绿素 主基因+多基因 遗传模型 

分 类 号：S572[农业科学—烟草工业]