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植物研究 ›› 2022, Vol. 42 ›› Issue (4): 667-676.doi: 10.7525/j.issn.1673-5102.2022.04.016

• 生理与生态 • 上一篇    下一篇

不同水肥处理对尾叶桉苗木生长及生物量分配的影响

杨会肖, 徐放, 杨晓慧, 廖焕琴, 张卫华, 潘文()   

  1. 广东省森林培育与保护利用重点实验室,广东省林业科学研究院,广州 510520
  • 收稿日期:2021-04-29 出版日期:2022-07-20 发布日期:2022-07-15
  • 通讯作者: 潘文 E-mail:Panwen@sinogaf.cn
  • 作者简介:杨会肖(1981—),女,高级工程师,博士,主要从事林木遗传育种的研究。
  • 基金资助:
    广东省林业科技创新项目(2016KJCX002/2019KJCX003);“十三五”国家重点研发计划项目(2016YFD0600501)

Effects of Different Water and Nutrient Treatments on Growth and Biomass Distribution of Eucalyptus urophylla Clones

Huixiao YANG, Fang XU, Xiaohui YANG, Huanqin LIAO, Weihua ZHANG, Wen PAN()   

  1. Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou 510520
  • Received:2021-04-29 Online:2022-07-20 Published:2022-07-15
  • Contact: Wen PAN E-mail:Panwen@sinogaf.cn
  • About author:YANG Huixiao(1981—),female,senior engineer,doctor,majoring in the research of forest genetics and breeding.
  • Supported by:
    Innovation Project for Forestry Science and Technology in Guangdong(2016KJCX002/2019KJCX003);National Key Research and Development Program of China(2016YFD0600501)

摘要:

为筛选适宜不同水肥条件的尾叶桉(Eucalyptus urophylla)优良无性系,以34个尾叶桉无性系为研究对象,采用2因素(水分、养分)3水平完全随机区组设计,对不同水肥处理下18个月的尾叶桉苗木生长和各器官生物量进行方差分析和遗传参数评估。结果表明:除少数性状外,尾叶桉生长(树高、地径)和生物量(主干、侧枝、根)在不同区组、水分、养分、水分×养分互作及无性系的差异间均达到显著或极显著水平,表明水分、养分和无性系会影响尾叶桉生长和各器官生物量大小。在水分和养分组合处理下,尾叶桉生长和各个器官生物量在组合33(高水高肥)和组合32(高水中肥)处理下表现较好。全株总鲜质量在组合32处理最大,与组合11处理相比增加了135.70%。主干、根、叶和总生物量的鲜质量与干质量相关系数最高,相关系数在0.90以上。无性系在树高、地径和生物量的方差分量为4.28~31 255.80,大部分性状的单株重复力在0.15以上,且都达到了显著水平。以15%无性系入选率,采用BLUP预测的尾叶桉无性系基因型值筛选出ZQUB39和ZQUC23尾叶桉在水分和养分梯度较低的土壤环境中生长较好,UD42、LDUC1和ZQUA3在水分和养分梯度较高的土壤环境中生长较好。这些优良无性系可能在多种立地进行推广种植。

关键词: 尾叶桉, 无性系, 生长, 生物量

Abstract:

To elect excellent clones of Eucalyptus urophylla suitable for different water and nutrient conditions, 34 clones were selected as materials, and the variance analysis and genetic parameters were evaluated for growth and biomass in 18 months under different water and nutrient treatments by using a randomized complete block design. The results showed that the growth(height and diameter) and biomass(trunk, branch, root) of E. urophylla reached significant or extremely significant levels in different block, water, nutrient, water × nutrient interaction and clones, indicated that water, nutrient and clones affected the growth and biomass of each organ of E. urophylla. Under the combined treatment of water and nutrients, the growth and biomass of each organ were better under the combination of 33 and 32 treatments. The total fresh biomass in combination 32 was the largest, which increased by 135.70% compared with combination 11. There were significant positive correlations among fresh and dry in trunk, roots and leaves, and these values were above 0.90 respectively. The component variance for height, ground diameter and biomass ranged from 4.28-31 255.80, and the individual repeatability of most traits was above 0.15 that reached significant levels. ZQUB39 and ZQUC23 grew well in soil with low water and nutrient, while UD42, LDUC1 and ZQUA3 grew well in soil with high water and nutrient with 15% selection rate using BLUP predicted genotypes of E. urophylla clones. These excellent clones would be promted in the future.

Key words: Eucalyptus urophylla, clone, growth, biomass

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