Effects of ammonium nitrate application on skin color development of streptomycin-treated seedless 'Fujiminori' and 'Kyoho' grape [Vitis vinifera] cultivars
2009
Ishikawa, K., Tokyo Univ. of Agriculture, Atsugi, Kanagawa (Japan). Faculty of Agriculture | Baba, T.
We investigated the effects of ammonium nitrate (NH4NO3, AMN) application with gibberellic acid (GA) at 13 days after full bloom on the skin color, size and other fruit qualities of tetraploid 'Fujiminori' and 'Kyoho' grape berries which were treated with 200 ppm streptomycin at about three weeks before full bloom to eliminate seeds. Skin color development of 'Fujiminori' berries treated by 25 ppm GA with 12.5 or 25mM AMN, was accelerated compared to berries treated with 25 ppm GA alone. However, the application of AMN had no effect on the size and internal quality of berries in both cultivars.
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