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Effect of Different Gibberellins on the Growth of the Hypocotyl
Author(s) -
Rai Vinay K.,
Laloraya Manmohan M.
Publication year - 1967
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1967.tb08375.x
Subject(s) - gibberellin , hypocotyl , botany , biology , gibberellic acid , nicotiana tabacum , horticulture , germination , biochemistry , gene
It has been stated earlier that hypocotyls of different plants show different growth response to added GA 3 . It was suggested that this difference may be due to the requirement of some specific gibberellin. Hence hypocotyl growth response of three groups of plants has been studied with different gibberellins: group one showing no or insignificant growth response, group two showing 150–200 per cent growth response and group three showing 300–500 per cent growth response to added GA 3 . Eight gibberellins were used, viz ., GA 1 , GA 2 , GA 3 , GA 4 , GA 5 , GA 7 , GA 8 and GA 9 , to test if this varying response is connected with the requirement of some specific gibberellin. In general, the results obtained do not favour this view. Iberis amara , a plant showing no response to added GA 3 , Dianthus sp., a plant showing 150 to 200 per cent response and Lactuca satwa, Antirrhinum majus and Nicotiana tabacum , plants showing 300 to 500 per cent response, were promoted by all the gibberellins tested to a similar extent as by GA 3 , with the exception of GA 8 which was inactive in most of the cases.