JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 1993, Vol. 17 ›› Issue (01): 1-8.doi: 10.3969/j.jssn.1000-2006.1993.01.001

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RESEARCH ON THE JOINT GENETIC IMPROVEMENT OF GROWTH AND WOOD PROPERTIES IN CHINESE FIR (CUNNINGHAMIA LANCEOLATA (LAMB.) HOOK.)

Shi Jisen Ye Zhihong Wen Yuzhen Yu Rongzhuo Li ShoumaoChen Renxian Liu Dalin Zhang Fushou Li Yuke   

  1. Nanjing Forestry University
  • Online:1993-03-18 Published:1993-02-18

Abstract: Based on a series of research, achievements on joint genetic improvenent of growth and wood properties in Chinese fir were represented. The results show that:(1) It was the applied sampling method to take a single core sample through pith at breast height (CSBHTP) for wood-property e-valuation in joint genetic improvement in Chinese fir, which is the undistructural sampling method. (2) SG and TL are the important traits in joint genetic improvement, SG was strongly realted to the characters of MOE, MOR, IBS and MCS. (3) The genetic variation patterns for growth and wood properties were different, growth traits were negatively related to longitude, while SG was increasing along with the increasing of latitude, and the eastern region of the central distribution area of Chinese fir may be the ’superior’ gene pool both for growth and wood properties. (4) There was a significant genetic variation among families from open-pollinated, tester and diallel mating system ; the individual and family heritability on SG were 0. 29 and 0. 5-respectively; both growth and wood property characters were strongly influenced by the general combining ability of female parent and maternal effect, which is the first time to found such a genetic effect on SG by the maternal factor on Chinese fir. (5) There was no significant correlation between growth and wood property, which seems independent each other and can be improved together genetically. (6) There was a significant correlation between the juvenile and the mature wood property (at rotation age) , which can be properly predicted by the juvenile SG and TL of core sampling around 15-year-old. (7) The SG can be kept unchanged and/or increased 5 % through joint genetic improvement, while the growth traits could be improved as better as possible.