Articles
APPLICATION OF ETHEPHON AND ABA AT 40% VERAISON ADVANCED MATURITY AND QUALITY OF ‘BEIDANEH GHERMEZ’ GRAPE
Article number
884_44
Pages
371 – 377
Language
English
Abstract
The market value of grape Beidaneh Ghermez, which is one of the most popular cultivar of table grapes in Iran, is dependant upon its desirable appearance (red color). Its color is relatively poor in Zanjan province, Iran.
The research was conducted to study the effects of of ethephon and abscisic acid (ABA) at four dosages (0, 100, 200, 300 ppm) at 20 to 30% verasion of berries on skin color quality of Beidaneh Ghermez during two seasons (2007-2008). Application of ABA was more effective than ethephon for enhancing the color and maintaining quality of fruits.
The ABA application significantly increased berry total anthocyanin content.
Total berry skin smart anthocyanin (extracted and absorbance at 520 nm) was associated with skin color.
ABA-treated grapes were characterized by superior appearance both in berries and clusters, compared to ethephon-treated and un-treated control grapes.
Grape treated with ABA showed higher firmness and soluble solids concentrations than the control.
Firmness decreased with increasing ethephon dosages (up to 200 ppm). Berry size (berry weight) increased by ethephon application.
Ethephon application enhanced fruit ripening, which is very important to avoid rain cracking.
The research was conducted to study the effects of of ethephon and abscisic acid (ABA) at four dosages (0, 100, 200, 300 ppm) at 20 to 30% verasion of berries on skin color quality of Beidaneh Ghermez during two seasons (2007-2008). Application of ABA was more effective than ethephon for enhancing the color and maintaining quality of fruits.
The ABA application significantly increased berry total anthocyanin content.
Total berry skin smart anthocyanin (extracted and absorbance at 520 nm) was associated with skin color.
ABA-treated grapes were characterized by superior appearance both in berries and clusters, compared to ethephon-treated and un-treated control grapes.
Grape treated with ABA showed higher firmness and soluble solids concentrations than the control.
Firmness decreased with increasing ethephon dosages (up to 200 ppm). Berry size (berry weight) increased by ethephon application.
Ethephon application enhanced fruit ripening, which is very important to avoid rain cracking.
Authors
M.E. Amiri, E. Fallahi, SH. Parseh
Keywords
anthocyanins, berry quality, firmness, skin color, table grapes
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