墨西哥柏优树自由授粉子代测定初报

A Preliminary Report on Open-Pollinated Progeny Test of Elite Trees of Cupressus lusitanica

摘要: 对从四川省引进的52株墨西哥柏优树自由授粉种子子代进行了单点测定.结果表明:树高、胸径均大于群体平均值5%以上的共有9个家系,以20%的入选率,遗传增益分别为16.7%和41.4%;各家系的生长差异受遗传控制的同时,也受立地条件的影响;苗高与幼林树高存在一定的相关性。

Abstract: Progeny tests were made in 52 open-pollinated trees of Cupressus lusitanica.The result showed that 9 families exceeded the mean by 5% in height and DBH.By 20% sellection proportion,the genetic gain was 16.7% and 41.4% respectively,the growth trait was contolled by genetics and environment at the same time,and the seedling height had certain correlation with height of the young trees.