Exogenous Gibberellin₄₊₇ and Benzyladenine Application Promotes Return Bloom, Vegetative Growth, Fruit Set and Yield of Apple (Malus x domestica Borkh.) cv. ‘Red Velox’

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发表日期：

2025年7月30日

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Diksha Dhiman,
Neena Chauhan,
Pramod Verma,
Sanjana Singh,
Nitin Sharma

摘要

The present research was carried out during 2020–2021 at the Regional Horticulture Research and Training Station at Mashobra, Shimla, Himachal Pradesh, India. Apple trees aged 5 years and grafted on M9 rootstock were sprayed with gibberellin (GA)₄₊₇ + benzyladenine (BA) at different growth stages of apple cv. ‘Red velox’. The study demonstrated that GA₄₊₇ + BA significantly influenced apple production metrics and vegetative development at varying doses and times. Optimum vegetative growth and leaf area among the various treatments were recorded with the application of GA₄₊₇ + BA at 10 ppm. Meanwhile, plants treated with GA₄₊₇ + BA at 1ppm exhibited the highest return bloom. The highest percentage of fruit set was recorded in plants treated with GA₄₊₇ + BA at 5 ppm. Moreover, the highest fruit retention was observed with GA₄₊₇ + BA at 10 ppm application. A higher percentage of total yield was observed in plants treated with GA₄₊₇ + BA at 7.5 ppm over all other treatments. Maximum yield efficiency was recorded when GA₄₊₇ + BA was applied at 2.5 ppm. This investigation revealed that the use of GA₄₊₇ + BA can be recommended to enhance the fruit set and yield of the apple crop.

Exogenous Gibberellin4+7 and Benzyladenine Application Promotes Return Bloom, Vegetative Growth, Fruit Set and Yield of Apple (Malus x domestica Borkh.) cv. ‘Red Velox’

摘要

Exogenous Gibberellin₄₊₇ and Benzyladenine Application Promotes Return Bloom, Vegetative Growth, Fruit Set and Yield of Apple (Malus x domestica Borkh.) cv. ‘Red Velox’