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Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (1): 11-15.doi: 10.11924/j.issn.1000-6850.2013-2191

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Grey Relational Analysis on Growth, Wood Properties and Calorific Value and Selection of the Superiority Half-sib Families of Castanopsis fissa

Tong Fangping1, Jiang Yi2, Liu Zhenhua1, Huang Ronglin1, Li Gui1, Chen Rui1, Kal   

  • Received:2013-08-14 Revised:2013-09-23 Online:2014-01-05 Published:2014-01-05

Abstract: In order to scientific select the growth, wood properties and calorific value of excellent half-sib families of Castanopsis fissa, by applying randomized block design approach, through six-year old half-sib families’growth test and analysis of wood properties and calorific value, and using the gray relational analysis model verified the wood density had a high degree association with its growth trait. The comprehensive selection index was I=0.4480X1+0.5395X2+0.5762X3, obtained by computing the volume, density and calorific value. The index heritability and△H were 0.8158, 0.1693 respectively. The index calculated with the average comprehensive selection index plus 1.25 times standard deviations could be used as the adoptable index for selection of volume, density and calorific value of half-sib families of Castanopsis fissa. There were five half-sib families have been selected (PG07, RS09, TD01, RS08, PG08) as quality families. The gains of volume, density and calorific value were 156.33%-391.78% , 12.70%-25.22% and 15.81%-31.80% , respectively. The half-sib families’initial selection effects were quite obvious. The conclusions provided a scientific basis for building seed orchard and developing genetic improvement strategy.