Preliminary Report on the Test of 57 Open-pollinated Generation of Cunninghamia lanceolata

The result of progeny test of 57 open-pollinated families of Cunninghamia lanceolata showed that height、DBH、volume of 8-years seedlings in seed orchard exceeded 5.85%、11.67% and 31.08% of those contrasts,and the CV was 20%、22.16% and 58.44% respectively.The variance analysis showed there were significant difference among timber families in height、DBH and volume,and individual heritability was 0.26、0.35 and 0.36,and family heritability was 0.56、0.69 and 0.68 in order.Those 15% volume exceeding family averages as a criterion,13 super families were selected,which average genetic gain was 22.9%.