【摘要】 对从四川省引进的 5 2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 2 0 %的入选率 ,遗传增益分别为1 6 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 .更多还原

【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.更多还原