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Effects of Plant Growth Regulator on Endogenous Hormone Levels during the Period of the Red Globe Growth

Author

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  • Juan He
  • Songlin Yu
  • Chao Ma

Abstract

Objective. The present study was aimed to elucidate the dynamic changes of endogenous hormone levels during thefruit growth and the changing regulation of endogenous hormone levels between normal and abnormal fruits.Methods. After using exogenous GA3 and GA3+6-BA, endogenous hormone levels such as indoleacetic acid(IAA),cytokinin(ZR), abscisic acid(ABA) and gibberellin(GA3) in normal fruits and rigid abnormal ones were determined byenzyme-linked immunosorbent assays(ELISA), respectively.Results. The results indicated that the treatments of 20mg/kg GA3 and the combination of 20mg/kg GA3+10 mg/kg6-BA had no remarkable effects on increasing average weight of berries where the vertical diameter of grape fruits waslonger than the transverse diameter. Exogenous hormone GA3 and GA3+6-BA mixture also affected the endogenoushormone levels. The content of IAA, ABA and ZR was lower in the rigid abnormal fruits than that in the normal ones,respectively, and those levels during the rapid growth period were nearly in accordance with those during the slowgrowth period.Conclusion. The fruit growth was closely related to the endogenous hormone levels.

Suggested Citation

  • Juan He & Songlin Yu & Chao Ma, 2009. "Effects of Plant Growth Regulator on Endogenous Hormone Levels during the Period of the Red Globe Growth," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 1(1), pages 1-92, May.
    • Handle: RePEc:ibn:jasjnl:v:1:y:2009:i:1:p:92
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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