Comparison of leaf-area index with root weight for assessing plant damage by soil-borne pathogens.

Biernacki M; Bruton BD

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Comparison of leaf-area index with root weight for assessing plant damage by soil-borne pathogens.

机译：比较叶面积指数和根重，以评估土壤传播的病原体对植物的危害。

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'Hymark' and 'Mission' melons (Cucumis melo) were grown in growth chambers over 4 weeks in sand inoculated with the soil-borne pathogens Monosporascus cannonballus, Acremonium cucurbitacearum, or Rhizopycnis vagum. Quantitative information on plantcharacteristics and biomass was collected from destructively sampled plants. Leaf-surface area and root mass decreased in plants proportionally with disease severity. Both the leaf-area index and the root mass were significantly correlated with disease severity index. However, leaf-area index was 3.5 times more precise and more likely to reflect damage to plant roots than shift in root mass. Leaf-area index was capable of detecting significant differences in root damage even in cases where root-mass measures failed to do so. The leaf area index is particularly suitable for non-destructive, continuous evaluation of plant impairment. Standardized to common scale, quantitative assessment of plant impairment using leaf area index has great potential as a tool for precise and accurate assessment of plant resistance and/or pathogen virulence. The index may facilitate spatial and temporal comparisons and meta-analyses of data for cucurbits.

机译：“ Hymark”和“ Mission”瓜类（Cucumis melo）在接种了土壤传播病原体Monosporascus cannonballus，葫芦顶孢霉或Rhizopycnis vagum的沙子中的生长室中生长了超过4周。从破坏性取样的植物中收集有关植物特性和生物量的定量信息。植物的叶表面积和根质量与疾病严重程度成正比。叶面积指数和根质量均与疾病严重度指数显着相关。但是，叶面积指数的精确度是根部移动的3.5倍，并且更可能反映出对植物根部的损害。叶面积指数能够检测出根部损害的显着差异，即使在根质量测量未能做到的情况下也是如此。叶面积指数特别适合对植物危害进行非破坏性连续评估。按照常规规模进行标准化，使用叶面积指数对植物危害进行定量评估具有巨大的潜力，可作为准确，准确评估植物抗性和/或病原体毒力的工具。该索引可以促进葫芦丝的数据的空间和时间比较以及元分析。

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《Acta Horticulturae》 |2000年第510期|共7页
作者
Biernacki M; Bruton BD;
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正文语种 eng
中图分类园艺;
关键词
pathogens; leaf area index; melons; disease resistance; virulence; plant pathogens; plant diseases; plant pathogenic fungi; fungal diseases; vegetables; fruit crops; fruits; plant pathology; Acremonium; Cucumis; Cucumis melo; Cucurbitaceae;

机译：病原体;叶面积指数;甜瓜;抗病性;毒力;植物病原体;植物病害;植物病原真菌;真菌病;蔬菜;水果作物;水果;植物病理学;顶盖植物;黄瓜;黄瓜;甜瓜;葫芦科;

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机译：比较叶面积指数和根重，以评估土壤传播的病原体对植物的危害。
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3. In vitro effect of plant essential oils on growth of some soil-borne pathogens. [J] . Tanovic B, Milijasevic S, Obradovic A Acta Horticulturae . 2007,第729期

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Comparison of leaf-area index with root weight for assessing plant damage by soil-borne pathogens.

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