青海云杉优良无性系选育初报

Preliminary Report on the Breeding of Superior Clones of Qinghai Spruce

通过对1975年建立的青海云杉初级种子园19个无性系388株立木,树高、胸径的逐株测量分析,初选出9个预选无性系;2004年又从该种子园中的13个无性系嫁接培育448株苗木,进行重复检验,以苗木近5年新梢生长量为主要依据,初步确立无性系11、12、16号为青海云杉优良无性系。其连续5年新梢生长量分别超过群体均值8.69%、10.66%、12.58%、16.92%和13.24%,增益明显。

by 388 strains of stumpage system established in 1975 in Qinghai spruce seed orchard of 19 clones,tree height,diameter at breast height by strain measurement and analysis,the primary 9 preselected clones; in 2004 from 13 clones of grafting 448 seedlings in the seed orchard,repeat the test,with nearly 5 seedlings new slightly growth as the main basis,preliminary establishment clone 11,12,16 as the superior clones of Qinghai spruce. Its 5 straight year of new shoot growth rate more than population mean 8. 69%,10. 66%,12. 58% of,16. 92 and 13. 24% respectively,significant gains.