低照度下における鉢花カーネーションの生理ならびに品質に及ぼす5-アミノレブリン酸処理の影響(収穫後の貯蔵・流通)  [in Japanese] Effects of 5-Aminolevulinic Acid on Physiology and Quality of Potted Carnations under Low Light Intensity(Postharvest Physiology & Technology)  [in Japanese]

Access this Article

  • CiNii Fulltext PDF

    Open Access

  • JASI

Search this Article

Abstract

鉢花カーネーションの流通・消費段階での収穫後品質向上のために低照度下での生理および品質の変化について調査した.個葉の光補償点は'マイフェアレディ'ではPPFD 10.3μmol・m^<-2>・s^<-1>,'スカーレット'12.9μmol・m^<-2>・s^<-1>と算出された.Fv/Fm,ΦPSIIおよび葉のクロロフィル含量は120μmol・m^<-2>・s^<-1>では維持されたが,10μmol・m^<-2>・s^<-1>(16時間日長)においては著しく低下した.10μmol・m^<-2>・s^<-1>において花弁の糖含量とアントシアニン含量の低下が認められた.10μmol・m^<-2>・s^<-1>では120μmol・m^<-2>・s^<-1>の鉢と比較して開花数が減少し,鉢花の日持ちも短かった.これらのことから,光補償点前後の弱光下ではクロロフィルの分解と葉の黄化が進行し,光合成量が著しく低下して糖含量が低下した結果,個々の小花と鉢花全体の日持ちが短縮されたものと推察された.10μmol・m^<-2>・s^<-1>条件下の'スカーレット'では30ppm5-アミノレブリン酸(ALA)処理により葉のφPSII値およびクロロフィル含量の低下と黄化が緩和され,開花数,小花および鉢花の日持ちが改善される傾向にあった.PPFD5μmol・m^<-2>・s^<-1>(24時間日長)条件下の'マイフェアレディ'では30ppmおよび150ppmALA単独処理で鉢花の日持ちが有意に延長された.PPFD15μmol・m^<-2>・s^<-1>(12時間日長)条件下の'マイフェアレディ'において,30ppmALA処理はクロロフィル含量の低下を緩和したが,光合成速度や光補償点には影響しなかった.

Physiology of potted carnations under low light intensity was evaluated in order to improve their postharvest quality. Light compensation points of single leaves were estimated at photosynthetic photon flux density (PPFD) of 10.3 and 12.9μmol・m^<-2>・s^<-1> for 'My fair lady' and 'Scarlet', respectively. Fv/Fm, φPSII and chlorophyll concentration in the leaves remained high under 120μmol・m^<-2>・s^<-1> PPFD (16h of light) but were significantly decreased under 10μmol・m^<-2>・s^<-1>. Under 10μmol・m^<-2>・s^<-1> PPFD, concentrations of sugars and anthocyanin in petals decreased. Moreover, development of flower buds and unfolding of flowers were suppressed and thus potted plant longevity was short at a low light intensity. These findings suggested that low light intensity less than light compensation point resulted in a low photosynthesis rate, shortage of sugar accumulation, and reduced longevity of potted plants and florets. In 'Scarlet' maintained under 10μmol・m^<-2>・s^<-1>, treatments with 30ppm 5-aminolevulinic acid (ALA) alleviated the decrements of chlorophyll concentrations and φPSII, and thereby slightly improved the numbers of unfolded flowers, and longevity of florets and potted plants. In 'My fair lady', treatments with 30 and 150ppm ALA significantly prolonged the longevity of potted plant under 5μmol・m^<-2>・s^<-1> (24h of light). In 'My fair lady', treatments with 30ppm ALA alleviated the decrease in chlorophyll concentration but did not affect either the photosynthesis rate or light compensation point under 15μmol・m^<-2>・s^<-1> (12h of light).

Journal

Horticultural research (Japan)   [List of Volumes]

Horticultural research (Japan) 7(1), 115-121, 2008-01-15  [Table of Contents]

The Japanese Society for Horticultural Science

References:  17

You must have a user ID to see the references.If you already have a user ID, please click "Login" to access the info.New users can click "Sign Up" to register for an user ID.

Codes

  • NII Article ID (NAID) :
    110006546995
  • NII NACSIS-CAT ID (NCID) :
    AA11608561
  • Text Lang :
    JPN
  • Article Type :
    ART
  • ISSN :
    13472658
  • NDL Article ID :
    9348766
  • NDL Source Classification :
    ZR7(科学技術--農林水産--農産)
  • NDL Call No. :
    Z74-C757
  • Databases :
    CJP  NDL  NII-ELS  IR