闽楠种源试验及19年生优良种源选择

Provenance Test of Phoebe bournei and Selection of Good Provenanceat 19-year-old

为优选闽楠种质材料,测定了福建省洋口国有林场22个种源试验林的生长性状。结果表明:19年生闽楠种源树高、胸径、冠幅、单株材积总体平均值分别为11.28 m、11.90 cm、2.87 m和0.0759 m^(3),种源遗传力分别为0.7561、0.6716、0.6633、0.8688。以单株材积平均值加上2个标准差为指标,选出福建省南平市邵武市市、江西省吉安市泰和县、福建省南平市建瓯市迪口镇、福建省三明市永安市、江西省吉安市井冈山市、福建省三明市沙县等6个速生优良种源,树高、胸径、冠幅和单株材积平均值分别为13.59 m、14.76 cm、3.80 m和0.1230 m^(3),遗传增益分别为15.48%、16.14%、21.49%和53.92%。

In order to optimize the germplasm materials of Phoebe bournei,the growth traits of 22 provenances were measured on Yangkou National Forest Farm of Fujian Province.The results showed that the average tree height,DBH,crown width and tree volume were 11.28 m,11.90 cm,2.87 m and 0.0759 m^(3)respectively,and the heritability were 0.7561,0.6716,0.6633 and 0.8688 respectively at 19-year-old.Using the average tree volume plus 2 standard deviations as the index,6 fast growing and excellent seed sources were selected from Shaowu in Fujian,Taihe in Jiangxi,Dikou in Jianou,Yongan in Fujian,Jinggangshan in Jiangxi and Shaxian in Fujian.The average tree height,DBH,crown width and tree volume were 13.59 m,14.76 cm,3.80 m and 0.1230 m3 respectively.The genetic gains were 15.48%,16.14%,21.49%and 53.92%respectively.