四川农业大学学报 ›› 2010, Vol. 28 ›› Issue (03): 302-305.

• 研究论文 • 上一篇    下一篇

四川乡土杨树优树无性系化培育与苗期评价

万雪琴1,张 帆2,王长亮3,丁云海2,胡庭兴4   

  1. 1. 四川农业大学
    2.
    3. 林学院
    4. 四川农业大学林学院
  • 收稿日期:2010-06-16 修回日期:2010-08-18 出版日期:2010-09-30 发布日期:2010-09-30
  • 通讯作者: 胡庭兴
  • 作者简介:
  • 基金资助:

    四川省“ 十一五” 科技支撑项目“ 林竹新品种选育”;四川农业大学青年科学基金项目“ 四川乡土杨树基因资 收集与杂交育种”

Cloning of Plus-trees from Sichuan Native Poplars and Evaluating its Growth at Seedling Stage

  • Received:2010-06-16 Revised:2010-08-18 Online:2010-09-30 Published:2010-09-30
  • Contact: Hu TingXing

摘要:

本研究在前期对四川乡土杨树资源考查、优树选择和资源收集的基础上,开展了四川乡土杨树优树无性系培育与苗期评价,结果表明:不同无性系间1a生扦插苗的生长量差异很大,杂交杨Ⅰ无性系CN0727、CN0728、CN0729、滇杨、西南杨、光果西南杨、三脉青杨长势好,生长量大,是选育适宜四川低海拔地区栽培杨树良种的优良种质,从中直接选育良种的可能性较大;贡嘎杨是一类珍稀的优良杨树种质资源,直接选育用于园林绿化使用的良种可能性较大。而其它的杨树无形性系长势弱,对四川低山海拔地区自然生态条件适应性较差,直接利用的可能性较小。

关键词: 乡土杨树, 优树, 无性系化, 1a 生扦插苗, 生长量, 四川

Abstract:

Cloning of plus-trees selected from Sichuan native poplars and evaluating its growth at seedling stage were carried out on the basis of investigation, selection and collecting poplar resources in Sichuan. The results indicated that the biomasses of one-year-old cutting seedlings were remarkably different among the different poplar clones. Clones of hybrid named CNO727, CN0728 and CN0729, P. yunnanensis, P. schneideri, P. schneideri var. tibetica, P. trinervis grew well and were adaptive to the low altitude in Sichuan, so it is relative feasible to select improved varieties. P. gonggaensis was one of rare poplar resources and was used for garden greening. The others poplar clones grew weakly and showed bad adaptability for the natural ecological conditions of the low altitude in Sichuan, so it is impossible to direct use them.

Key words: Native poplar, Plus tree, Clone, One-year-old cutting, Biomass, Sihcuan