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中国农学通报 ›› 2021, Vol. 37 ›› Issue (22): 42-48.doi: 10.11924/j.issn.1000-6850.casb2020-0548

所属专题: 生物技术 园艺

• 林学·园艺·园林 • 上一篇    下一篇

桉树无性系组织比量特征差异分析

卢翠香1(), 苏远玉2, 郭东强1, 李昌荣1, 孙熹3, 李建凡3, 陈健波1()   

  1. 1广西林业科学研究院/广西优良用材林资源培育重点实验室,南宁 530002
    2广西国有钦廉林场,广西钦州 535099
    3玉林市林业科学研究所,广西玉林 537501
  • 收稿日期:2020-10-13 修回日期:2021-06-02 出版日期:2021-08-05 发布日期:2021-08-26
  • 通讯作者: 陈健波
  • 作者简介:卢翠香,女,1982年出生,广西南宁人,高级工程师,硕士研究生,主要从事木材科学研究。通信地址:530002 广西南宁市邕武路23号 广西壮族自治区林业科学研究院,Tel:0771-2319867,E-mail: 48002809@qq.com
  • 基金资助:
    广西科技重大专项“桉树用材林质量精准提升关键技术研究与集成示范”(桂科AA17204087-6);广西林业科技项目“大花序桉高效栽培技术集成”(桂林科字〔2016〕第2号)

A Study on the Difference of Wood Tissue Proportion of Eucalyptus Clones

Lu Cuixiang1(), Su Yuanyu2, Guo Dongqiang1, Li Changrong1, Sun Xi3, Li Jianfan3, Chen Jianbo1()   

  1. 1Guangxi Forest Research Institute/ Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Nanning 530002
    2Guangxi State-owned Qinlian Forest Farm, Qinzhou Guangxi 535099
    3Yulin Forestry Research Institute, Yulin Guangxi 537501
  • Received:2020-10-13 Revised:2021-06-02 Online:2021-08-05 Published:2021-08-26
  • Contact: Chen Jianbo

摘要:

为了解桉树无性系木材组织比量变异规律,提高桉树材性的遗传改良效率。以生长在广西玉林的11个桉树无性系为试验材料,采用生物解剖学方法,对导管比量、轴向薄壁细胞比量、射线比量和纤维比量进行测定。结果表明,无性系间导管比量、轴向薄壁组织比量、射线比量和纤维比量差异极显著。随树龄的增加,导管比量先递增,第5年开始略有降低;轴向薄壁组织比量开始迅速下降,第7年后迅速上升,后又降低;射线比量呈逐渐增加趋势,中间有小幅波动;纤维比量呈减小趋势,中间有小幅波动。导管比量、轴向薄壁组织比量和射线比量采用多项式方程拟合效果较好,R2分别为0.8655、0.7263、0.6130;纤维比量采用对数方程和乘幂式方程拟合效果较好,R2分别为0.8172和0.8154。桉树无性系组织比量受较强的遗传控制,各指标重复力均在0.90以上,开展无性系组织比量遗传改良是可行的。

关键词: 桉树无性系, 组织比量, 无性系间变异, 径向变异, 遗传参数

Abstract:

The difference of wood tissue proportion of eucalyptus clones was studied to improve the efficiency of genetic improvement of wood properties. 11 clones from Guangxi Province were chosen as sampling materials, the vessel proportion, axial parenchyma proportion, ray proportion, fiber proportion were measured by biological anatomy methods. The results show that there are significant differences in the vessel proportion, axial parenchyma proportion, ray proportion, and fiber proportion among the clones. The vessel proportion increases with the increase of tree age and then decreases slightly at the 5th year. The axial parenchyma proportion decreases rapidly at first, rises rapidly after the 7th year, and then decreases again. The ray proportion increases annually and the fiber proportion decreases with the increase of tree age. The vessel proportion, axial parenchyma proportion, and ray proportion are well fitted by polynomial equation (R2=0.8655, 0.7263, 0.6130). The fiber proportion is well fitted by logarithmic equation and power equation (R2=0.8172, 0.8154). The tissue proportion of eucalyptus clones is under strong genetic control, and the repeatability of each index is above 0.90. It is feasible to carry out genetic improvement of clone tissue proportion.

Key words: eucalyptus clones, tissue proportion, clone variation, radial variation, genetic parameter

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