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1969•Journal of the American Society for Horticultural ScienceOpen access

Fruit and Vegetative Responses of the Highbush Blueberry to Gibberellic Acid under Greenhouse Conditions1

C. M. Mainland, Peter Eck

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Abstract

Abstract Gibberellic acid (GA) at 0, 5, 50, 200 and 500 ppm was applied to the highbush blueberry, var. ‘Coville,’ for 3 consecutive fruiting periods in the greenhouse. Application to the flower was a prerequisite for parthenocarpic fruit set and development. No significant differences were found in the number of shoots formed, shoot length, and stem or trunk diameter. GA caused a significant reduction in the number of flower buds formed for the next crop.

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Abstract Gibberellic acid (GA) at 0, 5, 50, 200 and 500 ppm was applied to the highbush blueberry, var. ‘Coville,’ for 3 consecutive fruiting periods in the greenhouse. Application to the flower was a prerequisite for parthenocarpic fruit set and development. No significant differences were found in the number of shoots formed, shoot length, and stem or trunk diameter. GA caused a significant reduction in the number of flower buds formed for the next crop.

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Available abstract

Abstract Gibberellic acid (GA) at 0, 5, 50, 200 and 500 ppm was applied to the highbush blueberry, var. ‘Coville,’ for 3 consecutive fruiting periods in the greenhouse. Application to the flower was a prerequisite for parthenocarpic fruit set and development. No significant differences were found in the number of shoots formed, shoot length, and stem or trunk diameter. GA caused a significant reduction in the number of flower buds formed for the next crop.

Key concepts: Gibberellic acid, Parthenocarpy, Shoot, Greenhouse, Biology, Horticulture, Fruit set, Fructification

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