The functions of gibberellins are:
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It stimulates stem elongation of mutant varieties of plants.
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It induces bolting of rosette plants.
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It also stimulates the leaf expansion.
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It breaks bud dormancy in trees.
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It controls flowering in long date plants.
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It induces parthenocarpy in fruits.
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It can control sex expression in certain plants.
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Gibberellins and auxins together control growth and development of fruit.
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It induces the production of hydrolysis enzymes in the germinating seeds.
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It promotes germination of seed and growth of seedlings.
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It increases the size of the fruits.