Vol. 11, Issue 8 (2022)

Author(s):
Gajalakshmi M, K Usha Kumari, M Paratpara Rao, E Padma and DR Salomi Suneetha

Abstract:
Potato (Solanum tuberosum L.) is one of the most important and widely consumed tuber vegetables throughout the world and ranks fourth after rice, wheat and corn. A major hindrance in potato breeding is that many varieties either do not flower or have poor flowering habit. To attempt crossing in any plant or crop, flowering, is a prerequisite. The number of flowers produced depends on the genotype and their interaction with day length and temperature. Considering these points in view, the present study was carried out to study the effect of chemicals and interaction effect of chemicals and genotypes on plant growth and flowering in different potato genotypes under extended photoperiod. Nine potato genotypes were sprayed with five chemicals under extended photoperiod. Results revealed that genotypes HT/10-1554, HT/21-6, HT/21-13 and HT/21-10 were found responsive for flower production. Chemical application had additive effect on all flowering traits. GA₃ 100 ppm application was superior for all reproductive parameters.