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 GA
3 hormone on ten days old seedlings and after three days, seedling height, 1
st internode and 2
nd 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 1
st internode length between the two varied with high significance (
P = .003). The GA
3 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 GA
3 pathway have caused defective gibberellin production which ultimately reduced the plant height in the mutant.
Pages: 2075-2077 | 947 Views 320 Downloads
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.