北华大学学报（自然科学版）2024，Vol.25Issue(5)：589-596,8.DOI:10.11713/j.issn.1009-4822.2024.05.005
露水河沙松优良家系与优良单株初选
Preliminary Selection of Excellent Families and Excellent Individual Plants of Abies holophylla Maxim in Lushui River
摘要
Abstract
The research object is the half sibling offspring test forest of 17-year-old Abies holophylla Maxim in Qingshui River Forest Farm,Lushui River,Jilin Province,tree height and DBH of 81 test families(including 1 control)were measured,survival rate was investigated,heritability was estimated,coefficient of variation,family heritability and genetic gain of each indicator were calculated;Using a comprehensive evaluation method to screen excellent families and individual plants.The results show that the average height of 17-year-old Abies holophylla Maxim is 3.42 m,the average DBH is 4.82 cm,and the average volume is 0.005 33 m3.The differences in various measurement indicators among the tested families reached a highly significant level(P<0.01).The average coefficients of variation for tree height,DBH,volume and preservation rate among families were 31.39%,51.75%,58.77%and 24.02%,respectively.The heritability of tree height,DBH and volume in families and per plant were 0.545,0.593,0.572 and 0.232,0.284 and 0.260,respectively.After comprehensive scoring sorting,8 excellent families were selected based on 10%selection rate,including 77#,46#,103#,54#,5#,90#,7#and 32#.The average tree height,DBH and volume of the excellent families were 3.85 m,5.93 cm,0.007 64 m3,respectively,0.39 m,0.95 cm,0.00184 m3 higher than the control family,respectively,0.43 m,1.11 cm,0.00231 m3 higher than the overall average.The average genetic gains of tree height,DBH and volume in excellent families are 14.06%,35.33%,49.79%,respectively.Among excellent families,18 excellent individual plants were selected with a selection rate of 10%.The average height,DBH and volume of excellent individual plants were 5.15 m,9.69 cm,0.020 07 m3,respectively,1.69 m,4.71 cm,0.014 27 m3 higher than the control family,respectively,1.73 m,4.87 cm,0.014 7 m3 higher than the overall average.The average genetic gains for the height,DBH and volume of excellent individual trees are 13.48%,24.69%,33.03%,respectively.The selected excellent families and individual plants can provide breeding resources for the cultivation of artificial forests of sand pine in Jilin Province.关键词
沙松/子代测定/优良家系/优良单株Key words
Abies holophylla Maxim/progeny testing/superior family/superior individual tree分类
农业科技引用本文复制引用
陆斐,刘刚,陈晓波,柏景珊,郭郁娇,魏伟,王刚..露水河沙松优良家系与优良单株初选[J].北华大学学报（自然科学版）,2024,25(5):589-596,8.基金项目
吉林市科技发展计划项目(20210502106). （20210502106）
