Variation Analysis of Clonal Seed Traits and Crown Diameter Trait in the Third Generation Seed Orchard of Cunninghamia lanceolata
To evaluate the effectiveness of the third generation seed orchard of Chinese fir(Cunning-hamia lanceolata),the variation law analysis of seed real character were performed on the 90 clones of the 3rd generation of Chinese fir seed orchard in Zhangping Wuyi state-owned forest farm.The results show that the great variations were observed in the phenotypes traits among different materials in the third seed orchard of Chinese fir.And the coefficient of variation was as follows:seed yield＞seed yield rate＞fresh weight of cone per plant＞thousand seed weight＞crown width,and there was significant correlation among different traits.Besides,significant differences of fresh weight and crown width of cone per plant have been observed among different clones.20 superior clones were selected with the average cone fresh weight per plant,seed yield,seed yield rate,thousand seed weight and crown diameter trait of increased by 24.33%,38.13%,26.15%10.47%and 9.88%respectively(compared with the average population).The preliminary evaluation results indicate that the great variations of seed traits of planting materials in the third seed orchard of Chinese fir,which indicates that it is a rich resource of genetic variations.The third generation of Chinese fir seed orchard should carry out clonal re-selection and strengthen the management of garden construc-tion.The 20 selected excellent clones could also be the key reserved clones for the transformation of the third seed orchard of Chinese fir,and the planting materials for the reconstruction of the next generation seed orchard.
Chinese firthe third seed orchardseed and seed traitsvariationthousand seed weight
国家科技期刊平台
NSTL
万方数据
维普
