Flowering:
Induction of flowering in plants which
otherwise fail to flower has also been reported with the use of various plant
growth regulators.
ü Application of GA at 50 mg/l to young
leave of non-flowering varieties of potato, when floral buds had just formed,
resulted in flower induction in all varieties.
ü MH delayed flowering in okra.
ü GA has been reported to induce early
flowering in lettuce.
Sex
Expression:
ü The treatment with growth regulators
has been found to change sex expression in cucurbits, okra and pepper
Gametocides:
some plants growth regulators posses
gametocidal actions to produce male sterility which can be used for F1 hybrid
seed production.
ü The chemicals whichy has been
reported to show good performance are MH at 100 to 500 mg/l in egg plant, okra,
peppers and tomato, GA3 in onion, 2,3-dichloroisobutyrate (0.2 to 0.8%) in egg
plants, musmelon, okra, onion, root crops, spinach and tomato and TIBA in
cucumber, egg plants, onion, and tomato. GA at 100 mg/l can also be used for
inducing male sterility in pepper.
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