モモ'紅清水'における着果位置と開花時期,発育日数が果実重と糖度に及ぼす影響  [in Japanese] Influences of Bearing Position in Canopy, Time of Flowering, and Growing Period of Fruit on the Variation of Weight and Soluble Solid Content of ‘Benishimizu’ Peach Fruit  [in Japanese]

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Abstract

モモ'紅清水'を用い,同一樹内での果実重と糖度の変動について,着果位置や開花日,果実発育日数との関係を2007~2009年に調査した.果実重と糖度は,樹内で大きくばらついた.果実重は,2007年には主枝の中位部で最も優れたが,2008年と2009年には主枝の先端部で優れた.2007年には開花日の遅い果実で果実重が大きかったが,2008年と2009年には開花日間で有意差はみられなかった.2009年を除き発育日数の長い果実では果実重が小さかった.一方,果実糖度は,いずれの年も主枝の先端部が基部よりも高い傾向であり,また開花の遅い果実で高かった.糖度が15%以上の果実は果実発育日数の短い果実に多かった.以上のように,モモ'紅清水'の果実重と糖度の樹内変動に関して,果実重は着果位置の影響を強く受ける一方,糖度は着果位置だけでなく開花日と果実発育日数の違いにも強く影響を受けることが明らかになった.<br>

We investigated the relationships of weight and soluble solid contents (SSC) of fruit and the bearing positions, time of flowering, and growing period of the fruit within the same ‘Benishimizu’ peach trees for three years (2007, 2008, and 2009). The fruit weight was high in the middle part of the main stem in 2007 and in the apical part of the main stem in 2008 and 2009. Weights of late-flowered fruit were significantly higher than those of early-flowered fruit in 2007, but there was no significant difference in the fruit weight among flowering dates in 2008 and 2009. As the fruit growing period from flowering to harvest increased, the fruit weight decreased in 2007 and 2008. On the other hand, SSC was higher in the apical part than in the middle and basal parts of the main stem in all the years. Also, in all the years late-flowered fruit showed a higher SSC compared to early-flowered fruit. The percentage of fruit with a high SSC (more than 15% Brix) was greater in fruit with a shorter growing period, while the fruit with a longer growing period had higher rate of low SSC (less than 10% Brix). Based on the above results, we concluded that the fruit weight is affected by the bearing positions of the canopy, and the SSC is affected by not only the bearing positions of the canopy, but also the time of flowering and the growing period of fruit.<br>

Journal

  • Horticultural Research (Japan)

    Horticultural Research (Japan) 11(4), 497-503, 2012

    THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

Codes

  • NII Article ID (NAID)
    130004938761
  • NII NACSIS-CAT ID (NCID)
    AA11608561
  • Text Lang
    JPN
  • Article Type
    journal article
  • ISSN
    1347-2658
  • Data Source
    J-STAGE  JASI 
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