Paper Infomation
Age Trends and Correlations of Fiber Traits in Clone of Eucalyptus Urophylla × E. Grandis in Guangdong Province
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Author: Shijun Wu, Jianmin Xu, Shijun Wu, Peining Song, Wenzhong Gu
Abstract: Growth traits and wood properties were assessed for DH32-29, a clone of Eucalyptus urophylla × E. grandis, at the age of two to six in Guangdong, China. Analysis of variance of studied traits showed that there were significant differences (1% level) on Fiber Length and Fiber Width among ages, with F value ranging from 12.73 to 18.91, indicating clear differences between ages. The Fiber Length increased from 0.58 mm at 2-year to 0.60 mm at 3-year, 061 mm at 4-year, 0.72 mm at 5-year and 0.79 mm at 6-year, meanwhile the annual Fiber Length increment among ages increased from 0.02 to 0.01, 0.11 and 0.07 mm, respectively. However, Mean Curl, Kink Index and Kink Angle were not found any trend by age. In general, the correlations between same traits were different with different ages. The biggest negative correlations (-0.78) was found between Fiber Length and Fine Percentage at 4-year while the biggest positive correlations (0.98) was found between Kink Index and Kink Angle at 2-year and 4-year.
Keywords: Eucalypt, Age Trends, Fiber Traits, Correlation
References:
[1] APIOLAZA LA, RAYMOND CA, YEO BJ. Genetic variation of physical and chemical wood properties of Eucalyptus globulus. Silvae Genetica 54(4-5):160–16, 2004.
[2] BOUVET JM, VIGNERON PH, SAYA A. Trends in variance and heritabilities with age for growth traits in Eucalyptus spacing experiments. Silva Genetica, 52(3-4): 121–133, 2003.
[3] GREAVES BL, BORRALHO NMG, RAYMOND CA. Breeding objectives for plantation eucalypts grown for kraft pulp. Forest Science, 43: 465–472, 1997.
[4] HANSEN JK, ROULUND H. Genetic parameters for spiral grain, stem form, Pilodyn and growth in 13 year old clones of Sitka Spruce (Picea sitchensis (Bong.) Carr.). Silvae Genetica, 46(2-3): 107–113, 1996.
[5] JACQUES D, MARCHAL M, CURNEL Y. Relative efficiency of alternative methods to evaluate wood stiffness in the frame of hybrid larch (Larix × eurolepis Henry) clonal selection. Annals of Forest Science, 61: 35–43, 2004.
[6] KUBE PD, RAYMOND CA, BANHAM PW. Genetic parameters for diameter, basic density, cellulose content and fibre properties for Eucalyptus Nitens. Forest Genetics 8(4): 285–294, 2001.
[7] LU Z, XU J, BAI J, ZHOU W. A study on wood property variation between Eucalyptus tereticornis and Eucalyptus camalduensis. Forest Research 13(4):370–376, 2000. (in Chinese)
[8] LUO JZ, ZHOU G, WU B, CHEN D, CAO JG, LU W, PEGG RE, ARNOLD RJ. Genetic variation and age-age correlations of Eucalyptus grandis at Dongmen Forest Farm in southern China. Australian Forestry, 73(2): 69–82, 2010.
[9] OSORIO LF, WHITE TL, HUBER DA. Age trends of heritabilities and genotype-by-environment interactions for growth traits and wood density from clonal trials of Eucalyptus grandis Hill ex Maiden. Silva Genetica, 50(1): 30–36, 2001.
[10] QI SX, WANG HR, WEN YG. Applied Eucalypt cultivation in China. Beijing: China Forestry Publishing House pp: 24, 2006. (in Chinese)
[11] VARGHESE M, HARWOOD CE, HEGDE R, RAVI N. Evaluation of provenances of Eucalyptus camaldulensis and clones of E. camaldulensis and E. tereticorni at contrasting sites in southern India. Silva Genetica, 57(3): 136–141, 2008.
[12] WEI XM, BORRALHO NMG. A simple model to describe age trends in heritability in short rotation tree species. Tree Improvement for Sustainable Tropical Forestry. Proc. QFRI-IUFRO Conf., Caloundra, Queensland, Australia. pp: 178–181. [Refereed conference] , 1996.
[13] WEI XM, BORRALHO NMG. Genetic control of basic density and bark thickness and their relationships with growth traits of Eucalyptus urophylla in south east China. Silvae Genetica, 46(4): 245–250, 1997.
[14] Wei XM, BORRALHO NMG. Objectives and selection criteria for pulp production of Eucalyptus urophylla plantations in south east China. Forest Genetics, 6(3):181–190, 1999.
[15] WU S, XU J, LI G, DU Z, LU Z, LI B, WANG W. Genotypic variation in wood properties and growth traits of Eucalyptus hybrid clones in southern China. New Forests 42: 35–50, 2011.
[16] YAO Q, HE S, ZHANG J, HONG C, LI B. Study on selection of Eucalyptus fine clone for fiber timber in southern hilly land of Fujian. Scientia Silvae Sinicae 39(1):87–92, 2003. (in Chinese)