烟草长柄分泌型腺毛的遗传分析  

Inheritance of Long-Stalk Secretory Glandular Trichomes in Tobacco

作　　者：李雪君[1] 王召军 李耀宇[1] 平文丽[1] 孙焕[1] 马彩娟[3] 陈飞 孙计平[1] LI Xuejun;WANG Zhaojun;LI Yaoyu;PING Wenli;SUN Huan;MA Caijuan;CHEN Fei;SUN Jiping(Tobacco Research Institute,Henan Academy of Agricultural Sciences/Key Laboratory for Green Preservation & Control of Tobacco Diseases and Pests in Huanghuai Growing Area,Xuchang 461000,China;Henan Agricultural University,Zhengzhou 450002,China;Xuchang Branch of Tobacco Company of Henan Province,Xuchang 461000,China)

机构地区：[1]河南省农业科学院烟草研究所/黄淮烟区烟草病虫害绿色防控重点实验室,河南许昌461000 [2]河南农业大学,河南郑州450002 [3]河南省烟草公司许昌市公司,河南许昌461000

出　　处：《河南农业科学》2020年第10期56-62,共7页Journal of Henan Agricultural Sciences

基　　金：河南省农业科学院自主创新专项(2020ZC17)。

摘　　要：烟草长柄分泌型腺毛的分泌物对烟叶的品质有重要影响,为了明确长柄腺毛的遗传特性,以纯合长柄分泌型腺毛烟草材料T.I.1068为父本、非分泌型腺毛烟草材料T.I.1112为母本,构建6个世代的群体(P1、P2、F1、F2、BC1、BC2),利用主基因+多基因混合遗传模型分离分析方法,研究烟草长柄分泌型和非分泌型腺毛的遗传规律。结果表明,烟草长柄分泌型腺毛与非分泌型腺毛相对比例的遗传由2对加性-显性-上位性主基因+加性-显性上位性多基因模型控制。BC1、BC2和F2世代主基因的遗传率分别为80.05%、97.88%和96.50%,主基因遗传率很高,可以在早代进行腺毛种类的选择;BC1、BC2和F2世代多基因的遗传率分别为16.15%、1.55%和2.75%,BC1代应考虑多基因的影响,BC2和F2代多基因的影响较小。可见,长柄分泌型与非分泌型腺毛相对比例的遗传受2对主基因控制,以主基因效应为主,受基因间的互作的影响。Tobacco secretion of long-stalk secretory glandular trichomes has an important influence on the quality of tobacco leaves.In order to clarify the genetic characteristics of long-stalk glandular trichomes,we used the homozygous long-stalk secretory glandular trichome type T.I.1068 as the male parent and non-secretory glandular trichomes type T.I.1112 as the female parent to construct a population of 6 generations(P1,P2,F1,F2,BC1 and BC2).The joint segregation analysis method of mixed major gene plus polygene genetic model was used to study the genetic characteristics of secretory and non-secretory types of long-stalk glandular trichomes.The results showed that the inheritance of the relative proportion of tobacco long-stalk secretory glandular trichomes to non-secretory glandular trichomes was controlled by two pairs of additive-dominant-epistatic major genes plus additive-dominant-epistatic-polygenic models.The heritability of the main genes of the BC1,BC2 and F2 generations were 80.05%,97.88%and 96.50%,respectively.The heritability of the main genes was very high,and the selection of glandular trichomes types could be finished in the early generation;the multi-gene heritability of the BC1,BC2 and F2 generation were 16.15%,1.55%and 2.75%,respectively.The impact of polygenes should be considered in the BC1 generation,while the impact of the polygenes in the BC2 and F2 generations was negligible.Our results showed that the relative proportion of long-stalk secretory and non-secretory glandular trichomes is controlled by two pairs of main genes,mainly by major gene effects,while affected by the interaction between genes.

关 键 词：烟草 长柄分泌型腺毛 非分泌型腺毛 比例 遗传分析 

分 类 号：S572[农业科学—烟草工业]