Parthenocarpic tomato fruits can be produced by

MCQ

A
treating the plants with phenylmercuric acetate
B
removing androecium of flowers before pollen grains are released
✓
treating the plants with low concentrations of gibberellic acid and auxins
D
raising the plants from vernalized seeds.

✓

Answer

Correct option: C.

treating the plants with low concentrations of gibberellic acid and auxins

c
(c) : Development of fruits without fertilization is called parthenocarpy and such fruits are called parthenocarpic fruits. Parthenocarpic fruits are seedless. A flower is emasculated and auxins are applied to the stigma of the flower, it forms a parthenocarpic fruit. For parthenocarpy induction by auxins, these should be applied after anthesis fertilization, is called amphimixis. But in some plants, this normal sexual reproduction (amphimixis) is replaced by some abnormal type of sexual reproduction called apomixis.Apomixis may be defined as, ‘abnormal kind of sexual reproduction in which egg or other cells associated with egg (synergids, antipodals, etc.) develop into embryo without fertilization and with or without meiosis’.Adventive embryony is a type of apomixis in which development of embryos directly takes place from sporophytic tissues like nucellus and integuments, $e.g.$, Citrus, mango, etc.

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