RESPONSE OF AMBIENT TEMPERATURES ON PRODUCTION OF FLOWERS IN PYRETHRUM AT KODAIKANAL (INDIA)

S. Mohandass, V. Sampath, R. Gupta
The response of flowering in pyrethrum due to ambient temperatures was analysed at different months of three consecutive years at Kodaikanal hills in south India. It showed a wide range of fluctuation in mean maximum and minimum temperatures. In general the plants exposed to lower minimum temperature produced a larger number of flowers (r = -0.5426**) with higher dry matter content and total pyrethrins. The cumulative effect of low temperature combined with the average temperature (accumulated degree days) was found to exert a positive influence on the flowering through bud initiation (r = -0.7753**).
Mohandass, S., Sampath, V. and Gupta, R. (1986). RESPONSE OF AMBIENT TEMPERATURES ON PRODUCTION OF FLOWERS IN PYRETHRUM AT KODAIKANAL (INDIA). Acta Hortic. 188, 163-168
DOI: 10.17660/ActaHortic.1986.188.19
https://doi.org/10.17660/ActaHortic.1986.188.19
188_19
163-168

Acta Horticulturae