油茶抗炭疽病优良单株筛选及抗病机理研究
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国家林业局重点项目(2006-47);国家“十一五”科技支撑项目(2006BAD08A1104);国家林业局重点项目(2007-07)


Screening on resistance to Anthrax in Resistant Individual Trees of Camellia oleifera
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    摘要:

    油茶炭疽病是油茶主产区的主要病害,严重影响油茶的产量及品质。本文对主要油茶林进行林间抗病及经济性状调查,人工接种鉴定,测定果皮滤液孢子萌发,测定健果接种前后过氧化物酶(POD),超氧化歧化酶(SOD)的变化。结果表明,普通油茶林中存在许多抗病丰产优株,筛选出一株高抗型优株“林大140号”自然抗病率0,人工接种果感病率为0;鲜出籽率53%;种仁含油率为54%,符合油茶抗病品种筛选标准。抗性机理研究表明,果皮滤液孢子萌发率与感病性成正相关,接种4天内,过氧化物酶活显著提高,提高幅度与抗病性成正相关,超氧化歧化酶活性下降,下降幅度与抗病性成正相关。

    Abstract:

    Camellia oleifera anthracnose, one of the major diseases in China's Camellia produced areas, can seriously affect the yield and quality of Camellia oleifera. The investigation of resistance to C. gloeosporioides in field, economic traits and conidia germination rate of the peel extract were carried in the paper, and then we tested the changes of the values of POD and SOD. The results showed that there were many excellent high-yielding disease-resistant strains in Camelliae olifara Abel produced areas. LIN DA 140, a strain of the Camellia oleifera with high resistance, was obtained. It’s natural and inoculation incidence were zero, fresh produced seed rate 53%, kernel oil rate 56%. The physiological biochemistry of resistance results revealed that the spore germination rate and the rate of infection had positive relativity. The POD activities were enhanced and the SOD activities were down after inoculation. The change ranges in the POD and SOD activity were positive relativity with disease resistance to C. gloeosprioides within 4d after inoculation.

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陈彧.油茶抗炭疽病优良单株筛选及抗病机理研究[J].湖南农业大学学报:自然科学版,2010,36(4):426-429.

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  • 收稿日期:2009-11-14
  • 最后修改日期:2010-03-17
  • 录用日期:2010-03-25
  • 在线发布日期: 2010-08-13
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