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Changes of Enzyme Activities and Inorganic Nutrient Contents Associated with Flower Development in Tulip (Tulipa gesneriana)

튤립(Tulipa gesneriana) 꽃의 발달단계에 따른 효소 활성 및 미량요소 함량의 변화

  • 조효경 (대구가톨릭대학교 자연대학 생명자원학부) ;
  • 박순기 (경북대학교 농과대학 농학과) ;
  • 정일경 (대구가톨릭대학교 자연대학 생명자원학부) ;
  • 이재석 (대구가톨릭대학교 자연대학 생명자원학부)
  • Published : 2003.12.01

Abstract

This study was carried out to investigate the changes of enzymes and micro inorganic nutrients that is associated with flower senescence during flower development in tulip cultivars, ‘Apeldoorn’ and ‘Golden Apeldoorn’. Ribonuclease, peroxidase and protease activities were gradually increased from the stage of early flowering to later Polyphenol oxidase showed the highest activity at stage 5, which the flower was in full bloom indicating that it acts at an initial stage of flower senescence. The protease activity was different in the petal extracts during flower development between the cultivars ‘Apeldoorn’ (red petal) and ‘Golden Apeldoorn’ (yellow petal). This result suggested that protease might relate to pigment biosynthesis in petal of tulip. In contrast to the decrease of inorganic nutrients K, Mn, Zn and P contents during floral development, Ca, Mg and Fe showed the gradual increasement that is similar with ribonuclease, peroxidase and protease. It suggests that they have some interaction during flower senescence.

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