【摘要】 以3个烤烟胞质雄性不育系(MsYZ206-9、MsYZ203-6和MsYZ216-1)和4个烤烟品种(红花大金元、云烟87、G80和G28)为材料,配成12个杂种,利用简单加性-显性遗传模型研究总糖、烟碱、总氮、氧化钾、氯、总糖/烟碱、总氮/烟碱和氧化钾/氯等8个烟叶化学品质性状的遗传效应和群体杂种优势表现.结果表明:1)控制烟叶总糖的主要遗传效应是加性效应,显性效应较低,其杂种优势利用潜力可能较低;控制烟碱、总氮、氧化钾、氯、总糖/烟碱、总氮/烟碱和氧化钾/氯的显性效应较高,这7个化学品质性状的杂种优势利用潜力可能较大;2)所有杂种总糖存在负向群体平均优势和负向群体超亲优势,其他7个化学品质性状表现为正向、负向群体平均优势和群体超亲优势并存.更多还原

【Abstract】 Twelve hybrids crossed among 3 cytoplasmic male sterile lines(MsYZ206-9,MsYZ203-6 and MsYZ216-1) with 4 varieties of flue-cured tobacco(Honghuadajinyuan,Yunyan 87,G80,G28) were studied on their genetic effects and heterosis in the following chemical quality characters:TS,Nic,TN,K2O,Cl,TS/Nic,TN/Nic,K2O/Cl by use of simple additive and dominant genetic mnode.The results showed:(1)TS with high additive effect and low dominant effect had small potency in heterosis,while the other traits,which were mainly controlled by dominant effect,had stronger potency in hybrid vigor.(2) HM(F1)and HB(F1) were negative in TS while they were either negative or positive in other chemical quality characters.更多还原