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Journal of Pharmacognosy and Phytochemistry

Journal of Pharmacognosy and Phytochemistry

Vol. 9, Issue 1 (2020)

Gibberellin sensitivity study shows key insights into the GA3 pathway in a semi-dwarf rice mutant of improved white Ponni

Author(s):

Andrew-Peter-Leon MT, M Arumugam Pillai, Kumar KK, R Pushpam and R Kannan

Abstract:
Improved White Ponni (IWP) is a popular rice variety in south India. We have developed WP-22-2, a semi-dwarf mutant of Improved White Ponni through gamma-ray induced mutation breeding. Gibberellin sensitivity of the mutant was studied by spraying 50 μM GA3 hormone on ten days old seedlings and after three days, seedling height, 1st internode and 2nd leaf lengths were measured. The variances between the treatments were compared using Student’s t-test. The IWP was 2.54 cm taller than the untreated mutant. The 1st internode length between the two varied with high significance (P = .003). The GA3 treatment has increased the seedling height of the mutant 6.0 cm in three days. The reversion of plant height in the mutant showed that the mutations in the GA3 pathway have caused defective gibberellin production which ultimately reduced the plant height in the mutant.

Pages: 2075-2077  |  606 Views  206 Downloads


Journal of Pharmacognosy and Phytochemistry Journal of Pharmacognosy and Phytochemistry
How to cite this article:
Andrew-Peter-Leon MT, M Arumugam Pillai, Kumar KK, R Pushpam and R Kannan. Gibberellin sensitivity study shows key insights into the GA3 pathway in a semi-dwarf rice mutant of improved white Ponni. J Pharmacogn Phytochem 2020;9(1):2075-2077.

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