沖積土壌におけるアスパラガスの連作障害に対するアレロパシーの関与(栽培管理・作型)  [in Japanese] Participation of Allelopathy in Injury due to Continuous Cropping of Asparagus (Asparagus officinalis L.) in Alluvial Soil(Crop Production & Cropping Type)  [in Japanese]

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Abstract

アスパラガスでは改植後,新植圃場に比べて減収し,若年株から欠株が発生するなどの原因不明の生育障害が多く見受けられる.本研究では,アスパラガスの連作障害における要因の一つであると考えられるアレロパシーの関与について検討した.アスパラガスの根圏土壌では,アスパラガスおよびレタスに対して強い生育阻害活性が認められた.その活性は,根圏土壌の塩類の集積やpHの変動,無機養分の異常によるものではなかった.また,アスパラガスの茎葉の生育阻害活性を検討したところ,茎葉をそのまま土壌中にすき込んでもアスパラガスの生育阻害や減収の大きな原因にはならないと考えられた.一方,アスパラガスの貯蔵根には強い生育阻害活性が認められ,その貯蔵根から惨出するアレロパシー物質がアスパラガスの連作障害の一つの要因であると推察された.

Replanting of asparagus (Asparagus officinalis L.) often results in lower yields and extensive damage of young plants. One of the causes is considered allelopathy. In this study, we examined the participation of allelopathy on injury by continuous cropping of asparagus in alluvial soil. The presence of strong allelochemical substances, which have the growth-inhibitory activity, was detected by bioassay of rhizosphere soil around asparagus. This growth-inhibitory activity was not attributed to salt accumulation, pH fluctuation, or inorganic nutrient imbalance in the rhizosphere soil. Asparagus foliage incorporated into the soil did not demonstrate a close relation to the growth inhibition or decreased yield of asparagus. However, strong growth-inhibitory activity was demonstrated in the storage roots of asparagus. It is assumed that an allelochemical is exuded from the storage roots and is one of the causes of unsuccessful continuous cropping of asparagus.

Journal

Horticultural research (Japan)   [List of Volumes]

Horticultural research (Japan) 5(4), 431-436, 2006-12-15  [Table of Contents]

The Japanese Society for Horticultural Science

References:  25

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Cited by:  2

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Codes

  • NII Article ID (NAID) :
    110005716737
  • NII NACSIS-CAT ID (NCID) :
    AA11608561
  • Text Lang :
    JPN
  • Article Type :
    Journal Article
  • ISSN :
    13472658
  • NDL Article ID :
    8587648
  • NDL Source Classification :
    ZR7(科学技術--農林水産--農産)
  • NDL Call No. :
    Z74-C757
  • Databases :
    CJP  CJPref  NDL  NII-ELS  IR