Effect of gibberellin treatment stage on seedless fruit production of "Kyoho" vines
1996
Li, L. (Institute of Xinjiang Agriculture Science, Wulumugi (China)) | Yamakawa, Y.
The effect of gibberellin treatment on the seedless fruit production of Kyoho vines was investigated in the 1995 growing season. Gibberellin treatment was carried out on residuary 3.5-4.0 cm flower clusters beginning at one of 3 stages: initial appearance of blossoms (I); full blossom (II); initial appearance of fruiting (III). A second treatment was carried out two weeks after the first treatment. Control vines which received no gibberellin treatment were also studied. Vines treated at stage I or II produced 100% seedless berries. Stag II berries and clusters were bigger than those of stage I and also had a higher sugar content and lower acid content as well as better taste and aroma. Optimal seedless berry production appears to occur when Kyoho vines receive gibberellin treatment at full blossom (Stage II)
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