Abstract
Abstract Effects of growth regulators on parthenocarpic fruit development in muskmelon (Cucumis melo L.) were tested under field conditions. Parachlorophenoxyacetic acid (4-CPA) β-naphtoxyacetic acid (β-NOA), gibberellin (GA4+7), and 2-chloro-9-hydroxyfluorene-9-carboxylic acid (chlorflurenol) caused parthenocarpy, when applied directly to flowers at anthesis. Seed coat developed in all parthenocarpic fruits. A positive correlation (r = 0.80) was found between number of seeds, seed coats, and fruit weight. Fruit set was induced under field conditions without bees, by a single spray of 4-CPA or β-NOA or chlorflurenol applied to the entire plant.
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