Seedling Traits of Toona ciliata from Different Half-sib Families
An experiment on seedling cultivation was conducted using 46 half-sib families of Toona ciliata in Junlian,Sichuan province.Height,basal diameter,crown diameter,taproot length and diameter,lateral root amount of 1-year seedling was determined.Results showed that growth traits had extremely differences among different families of 1-year T.ciliata seedlings.Seedling height,basal and crown diameter,main root diameter showed high heritability (over 0.80).Extremely significant positive correlations were observed between seedling height with basal and crown diameter,as well as between basal diameter with taproot length and diameter,number of lateral root.The linear regression equation of seedling height,basal diameter,crown diameter and fresh weight of the aboveground part was:y =-145.52 + 124.85 x1 + 0.49 x2 + 0.41 x3,the linear regression equation of taproot length and diameter,number of lateral root and fresh weight of the underground part was:y =-48.40 + 36.16 x1 + 1.34 x2 + 4.24x3.The characters of seedling height and basal diameter could be regarded as the most important indexes for selection,one family was selected for further assessment.
Toona ciliatahalf-sib familyseeding traitsfamily selection
NETL
NSTL
万方数据
维普
