GROWTH RESPONSE OF ‘CONNECTICUT KING’ LILIES TO SUMAGIC AND GA₄₊₇

‘Connecticut King’ lilies were sprayed with Sumagic at 15 or 30 ppm when plants were 10 to 14 cm tall.
GA₄₊₇ was sprayed one week later at 250 or 500 ppm.
The final height of the plants receiving 15 or 30 ppm Sumagic was 69 and 40 per cent, respectively, of the control plants.
Sumagic at 30 ppm also reduced leaf area and dry weight.
Stem dry weight was reduced at both concentrations of Sumagic spray.
Sumagic also delayed flowering by 2 to 10 days, shortened the duration of the flowering period of the plants by 3 to 5 days, and reduced the length of pedicel and inflorescence.
Interestingly, GA₄₊₇ treatments completely reversed the retarding effect of Sumagic on plant height and inflorescence length.
GA₄₊₇ at 500 ppm alone or with Sumagic at 15 ppm reduced days to flower.
Pedicel length was longer in all the GA₄₊₇ treatments than the control plants.
Sumagic treated plants sprayed with GA₄₊₇ had same flower period as the control plants.

Symposium on Bedding and Pot Plant Culture

X. Wang, J. Jiao, M.J. Tsujita

https://doi.org/10.17660/ActaHortic.1990.272.44