Genetic Analysis of Main Traits of Chinese fir at the Seedling Stage in Crossing Test (NCⅡ)
A cross test of 25 cross combinations (NCⅡ,5×5) was conducted in the three generation seed orchard of Chinese fir in forestry academy of Longquan City Zhejiang Province,and the container seedling test was carried out on this basis.The results showed that three traits of the seedling height(SH),base diameter (BD) ,branch number(BN) were very significantly different among the cross combinations.Their interactions of female×male were highly significant,too.And on SH there was significant difference in the males.The SCA variance components of SH,BD and BN were relatively high.Broad heritability of these 3 main seedling traits was middle.GCA effects of female (B46-3 and B49-3) and GCA effects of male (YW155 and YW179) of SH,and BD were of higher positive value.5 fast-growing crossing combinations at the seedling stage were selected out by means of comparison method of seedling height.The average values of SH and BD were 32.48 cm and 0.45 cm,respectively.Their productions increased by 28.63% and 12.50% contrast to CK1,and they increased by 20.97% and 9.76%contrast to CK2,respectively.
Chinese fircrossing testtraits at the seeding stagegenetic
国家科技期刊平台
NSTL
万方数据
维普
