烤烟品种(系)经济性状和评吸品质的稳定性分析

Stability analysis of economic traits and smoking quality of flue-cured tobacco varieties (lines)

采用EBERHART和RUSSELL回归模型对烤烟品种 (系 )主要经济性状的稳定性进行了测定 ,采用主效可加、互作可乘(AMMI)模型对评吸总分的基因型与环境互作效应进行了分析 .结果表明 ,烤烟品种的产量、级指和上等烟比率等经济性状因环境不同而存在变异 ,品系 910 2的产量、级指和上等烟比率均为最高 ,且适应范围较广 ;VA4 2 7的综合经济性状次之 ,具有特殊适应性 ;Coker 371产量最低 ,但具有较高的级指和上等烟比率及良好的稳定性 ;品系 9714 ,X972 6的综合经济性状较差 .烤烟品种的评吸总分存在显著的基因型与环境互作效应 ,VA4 2 7和 910 2的评吸品质的稳定性较好 .

The stability of main economic traits of flue cured tobacco cultivars (lines) was tested by Eberhart & Russell regression model; genotype by environment interaction of total score of smoking quality was analyzed based on a model with the additive main effects and multiplicative interaction (AMMI). The results indicated that economic traits such as yield, grade index and rate of grade A cured leaves of flue cured tobacco cultivars showed significant variation at different locations. Line 9102 had the biggest yield, grade index and rate of grade A cured leaves and better adaptability. The comprehensive characters of VA427 ranks second, with good adaptation at specific environment. The yield of Coker 371 was the lowest, but its grade index and rate of grade A cured leaves were bigger. The comprehensive traits of 9714 and X9726 were inferior. There existed significant genotype by environment interaction for total score of smoking quality among different varieties, and VA427 and 9102 had relatively stable smoking quality under different locations.