Screening and Analysis of F1 Generation from Hybridization among 20619 and Different Flue-Cured Tobacco Varieties
Four flue-cured tobacco varieties,namely G28,Coker176,Zhubo 1,and YZ03,were hybridized with 20619 as male and female parents,respectively,and eight F1 generations were obtained.The reproductive period,agronomic traits,economic traits,appearance quality,chemical composition,and SPAD value of each strain and parent were compared to evaluate the advantages and disadvantages of the offspring and parents.The results show that compared with the parents,the resettling stage of the F1 generation is delayed,resulting in an extension of the reproductive period.The number of effective leaves in the F1 generation is lower than that of its parents,but the waist leaf length and width are higher than those of its parents.The chlorine content in C3F tobacco leaves of F1 generation is generally low,and the overall performance of tobacco leaves is good,with no obvious differences in color,maturity,and structure from its parents.The SPAD value is used to analyze the parent-child correlation,and it is found that the female parent-child correlation is higher than that of the male parent-child correlation in the orthogonal combination,while the male parent-child correlation is higher than the female parent-child correlation in the reciprocal combination.It indicates that F1 has a higher probability of dominant traits when the female parent has a high parental value in hybridization.Overall,the F1 generation field of Zhubo 1×20619 has a short reproductive period,a significant improvement in waist leaf width,and a yield of 171.2 kg/667m2.There is a coordinated proportion of chemical components in tobacco leaves and a good overall performance,which has a certain popularization and application prospect.
flue-cured tobaccoorthogonalreciprocalhybrid F1 generationreproductive period
NETL
NSTL
万方数据
