【摘要】 以10个黑杨杂种候选新品系为试验材料,以当前优良品系108杨和中林46杨等为对照,通过室内和大田水分胁迫试验,同时结合在不同生态区内区域化试验及测定无性系的遗传特性(生长、材性和纸浆性能等),以水分利用效率、产量、材质等指标对候选品系进行综合比较分析,获得了木材纤维长、纤维含量高、木素和1%NaOH抽提物含量低的节水资源高效利用型杨树优良纸浆材新品种J2和J6,为华北、西北地区选育了抗旱、耐盐碱的优良杨树品种。更多还原

【Abstract】 In this study,10 hybrid clones of Section Airgeiros were used as plant material and current excellent varieties P.×euramericana Guariento’ and P.×euramricana(Dode) Guineir cv.’zhonglin-46’as controls,two new excellent Populus pulpwood varieties J2 and J6 were selected through indoor and outdoor water stress trials,genetic characters(growth,wood properties and pulp yield etc.) of regional trials in different ecological areas,and integrated analysis of WUE,yield and wood qualities.J2 and J6 had the characteristics of long-fiber,higher holocellulose,lower lignin content and 1% NaOH extractives,which filled in the blank of drought-and salt-resistant poplar breeding in north and northwest China.更多还原