Response of Perlette clusters to gibberellic acid applied at different stages of bloom

Authors

  • K. N. Chaturvedi National Botanic Gardens, Lucknow, India
  • S. D. Khanduja National Botanic Gardens, Lucknow, India

DOI:

https://doi.org/10.5073/vitis.1979.18.10-16

Abstract

Treatment of Perlette clusters with GA at 10, 20 and 40 ppm concentrations applied at various stages of bloom significantly reduced the number of berries/cm length of lateral, the maximum reduction being with 10 ppm applied at 50 % capfall. This was accompanied by a significant increase in percentage of shot berries. Similar thinning response was obtained with 40 ppm GA applied at 75 % capfall stage without any effect on percentage of shot berries. Quality constituents of berries were not significantly affected by GA treatments.

Die Reaktion von Perlette-Trauben auf die Anwendung von Gibberellinsäure
während verschiedener Blühphasen

Wurden Infloreszenzen der Rebensorte Perlette während verschiedener Blühphasen mit 10, 20 oder 40 ppm GS behandelt, so war die Anzahl der Beeren/cm der Traubenäste signifikant verringert; der stärkste Rückgang erfolgte bei Anwendung von 10 ppm GS, wenn 50°/a der Calyptren abgefallen waren. Hiermit war zugleich eine signifikante Zunahme der „Sehrotbeeren" verbunden. Ein ähnlicher Ausdünnungseffekt wurde mit 40 ppm GS bei 750/o abgefallener Calyptren erzielt, ohne daß dabei jedoch der Anteil der Sehrotbeeren beeinflußt wurde. Die Qualitätskomponenten der Beeren wurden durch GS-Behandlung nicht signifikant beeinflußt.

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Published

2016-06-22

Issue

Vol. 18 No. 1 (1979): Vitis

Section

Article

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