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中国油料作物学报 ›› 2019, Vol. 41 ›› Issue (3): 455-.doi: 10.7505/j.issn.1007-9084.2019.03.018

• 土肥植保 • 上一篇    下一篇

种植密度对普通油茶炭疽病病害发生的影响

吴鹏飞(1993-),男,硕士研究生,主要从事油茶良种抗病育种研究 #br#   

  1. 中国林科院亚热带林业研究所,浙江富阳,311400
  • 出版日期:2019-06-28 发布日期:2019-09-02
  • 通讯作者: 姚小华(1962-),男,研究员,博导,主要从事经济林遗传育种和栽培研究。E-mail:yaoxh168@163.com
  • 基金资助:
    中国林业科学研究院院基金重点项目(CAFYBB2017ZA004-1);浙江省农业(林业)新无性系选育重大科技专项(2016C02056-6);中国林业科学研究院亚热带林业研究所项目(RISFZ-2016-03)

Effect of planting density on Anthracnose Occurrence of Camellia oleifera

  1. 1.Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, Zhejiang, China
  • Online:2019-06-28 Published:2019-09-02

摘要: 为探究密度调整对普通油茶(Camellia oleifera)炭疽病发病程度的影响,基于金华东方红林场的普通油茶资源收集圃的3个重复小区,对105个普通油茶品种进行炭疽病病情调查,采用病情指数法、单因素方差分析、可重复双因素方差分析等方法分析密度调整及品种差异对病害的影响。分析结果表明:密度调整后大部分无性系的病情指数都有相应减小,88个无性系的抗病水平与密度调整前差异显著,其中高抗无性系增加4个,抗病无性系增加58个;密度调整对不同品种影响不同,15号、17号、21号等41个无性系在密度调整前后病情指数存在显著差异(P<0.05);10号、20号、24号等47个无性系在密度调整前后病情指数存在极显著差异(P<0.01),有17个普通油茶无性系在密度调整前后病情指数无显著性差异(P>0.05)。密度调整对炭疽病害发生有显著改善作用,且对不同普通油茶品种的影响存在差异,本研究可为普通油茶抗病品种选育和郁闭林改造提供依据。 

关键词: 密度调整, 油茶(Camellia oleifera)林, 品种, 炭疽病, 病情指数

Abstract: In order to explore the impact of density adjustment on the occurrence of Camellia oleifera anthracnose disease, and to provide a basis for the breeding of C. oleifera, based on the collection of C. oleifera resources in Jinhua Dongfanghong Forest Farm, the anthracnose survey was conducted on 105 C. oleifera varieties in three replicated plots. Disease index method, one-way analysis of variance, repeatable two-way analysis of variance and other methods were used to analyze the effects of density adjustment on diseases and variety. The results of analysis showed that after the density adjustment, the disease index of most varieties decreased accordingly, and the resistance levels of 88 varieties were significantly different from those before density adjustment. The quantity of highly resistant varieties increased by 4, the quantity resistant varieties increased by 58. The effect of density adjustment on different varieties was different. There were significant differences in disease index with 41 varieties in density adjustment such as 15, 17, 21 (0.01<P<0.05). There were extremely significant differences in disease index with 47 varieties in density adjustment such as 10, 20 and 24 (P<0.01). There were no significant differences in disease index between 17 varieties in density adjustment (P>0.05). Density adjustment has a significant improvement effect on the occurrence of anthracnose disease, and there were differences in the impact of different C. oleifera varieties. The study could assist the breeding of resistant varieties and transformation of closed forest of C. oleifera.
Key words: density adjustment, Camellia oleifera forest, variety, anthracnose, disease index