Evaluation on Growth and Seed Characters of Different Clones in 1.5-generation Seed Orchard of Chinese Fir

Abstract:

In order to further optimize the quality of 1.5-generation seed orchard, the growth and setting characteristic of 21 Chinese fir (Cunninghamia lanceolata) clones in 1.5-generation of seed orchard at Wuyi State-owned Forest Farm, Zhangping, Fujian Province, were investigated, and the difference and relationship of growth and setting characters among clones were analyzed. The characters of growth and setting of 21 clones was comprehensively evaluated by the analytic hierarchy process (AHP). The results showed that there were significant differences in growth and setting characters among different clones in 1.5-generation seed orchard. There was significant correlation between seed yield and setting amount, volume, fresh weight of cone, but no significant correlation between growth characters and cone setting amount, seed germination rate, respectively. According to the comprehensive evaluation on growth and setting characters of different clones, 6 clones of Chinese fir were selected owing to fast-growing and high seed yield. It was suggested that they could be used as materials for reconstruction 1.5-generation seed orchard of Chinese fir.