Efeitos dos reguladores do crescimento e da pressão reduzida no amadurecimento do tomate (Lycopersicon esculentum Mill)
Palavras-chave:
reguladores de crescimento, pressão reduzida, amadurecimento do tomate, ácido indolacético, atmosfera controladaResumo
Mature green tomato fruits were treated by immersion (2 min.) in solutions of ethephon, IAA, NAA and 2,4,5-TP (100 ppm), were given 750 ug of ethephon at the stem scar or wore placed in low pressure atmospheres (250 mm Hg). The ethephon treated fruits showed a faster red color development than control, IAA, NAA and 2,4,5-TP treated fruits. This difference was reduced as maturity progressed. Fruits placed in low pressure atmospheres showed a considerable delay in their ma- turity (40 days) without achieving the full red color typical of the variety.
Referências
AWAD, M.; ARAMIZU, A.K.; CHURATA-MASCA, M.G.G.; CASTRO, P. R.C. Efeitos do ácido 2-cloroetilfosfonico (ethephon) , das giberelinas, do confinamento em sacos de polietileno e da temperatura, no amadurecimento do tomate (Lycopersi- con esculentum Mill.) Rev. Agr. Piracicaba (no prelo).
CASTRO, P.R.C.; CHURATA-MASCA, M.G.C.; AWAD, M. Efeitos do ácido 2- Cinfóstilfastónico na maturação de frutos de tomateiro (Lycopersicon esculentum Mill. cv. "Sao Sebastido"). Anais da E.S.A4.L.Q.,Piracicaba,29:159-68, 1972.
COOKE, A.R. & RANDALL, D.I. 2-haloethane phosphonic acids as ethylene releasing agents for the induction of flower- ing in pineapples. Nature, 218:974, 1968.
EDGERTON, L.J. § BLANPIED, G.D. Regulation of growth and fruit = maturation with 2-chloroethamephosphonic acid. Nature, 219:1064-5. 1968.
FRENKEL, C. § DYCK, R. Auxin inhibition of ripening in Bartlett pear. Plant Physiol. 51:6-9, 1973
FRENKEL, C. § HAARD, N.F. Initiation of ripening inBartlett pear with an antiauxin a(p-chlorophenoxy) isobutyric acid. Plant Physiol, 52:380-4, 1973.
TOLLE, W.E. Hypobaric storage of mature-green tomatoes. (s.1.). 1969. 10p. (U.S. Dept. Agr. Mktg. Res. Rept. 842).
RABINOWITCH, H.D.; RUDICH, J.; KEDAR, N. The effect of ethrel on ripening tomato and melon fruits. Israel J. Agric. Res.,20:47-54, 1970.
