Fruit Set and Development in Potted Tomato, Lycopersicon Lycopersicum (L.) Karsten, Treated with Gibberellic Acid (Ga3 )

Edito  B. Sumile,; Jonathan  A. Bestes,; Larry  O. Inoc,

Fruit Set and Development in Potted Tomato, Lycopersicon Lycopersicum (L.) Karsten, Treated with Gibberellic Acid (Ga3 )

Edito B Sumile | Jonathan A. Bestes | Larry O. Inoc

Abstract:

The study was conducted to determine the most effective concentration of Gibberellic Acid (GA3 ) that promotes fruit setting and fruit development as well as the flower development that is most responsive to GA3 The cost and benefit analysis of the treatments was also done. Seven concentrations (O, 5, 10, 20, 40, 80, and 160 ppm) were sprayed to the flower clusters during pre-anthesis and post-anthesis. The study was laid in a 2x7 factorial experiment replicated three times, each with five hills per replicate. Fruit setting was highest in tomato plants sprayed with 10 ppm GA3 during post-anthesis. Applying five ppm GA3 during pre-anthesis or postanthesis significantly improved tomato production among other treatments based on yield and return on investment (ROI) The cost and benefit analysis showed that applying GA3 was not costly and gave more than 200 % ROI in treated tomatoes.

References:

Alejar, A.A. 1993. Elementary Plant Physiology. Institute of Biological Sciences, UPLB CAS, Laguna. Philippines.
Basra, A. S. 2000 — Plant Growth Regulators in Agriculture and Horticulture: Their Role and commercial use. The Hawarth press, Inc., IJSA.
Boorow, A., D. W. Brian, V. E. Chester, P. J. Curtiz, H. G. Himming, C. Henehan, E. G. Jeffrys, P. B. Lloyd, I. S. Nixon, G. L. F. Norris, and M. Radley. 1955. Gibberellic acid and metabolic product of fungus Gibberella fujikoroi: Some observation on its production and isolation. Jour. Sci. Food Agri. 6:340348.
Brian, P.W. and H.G. Heming. 1955. The effect of gibberellic acid on shoot growth of pea seedlings. Physical. Plantarum. 8:669-681.
Ceneza, A. A. 2000. Pesticide Analytical Laboratory: Its vital role toward safe food with in tolerable levels of pesticides residue is supplied in the market PMDP bulletin.
Devlin, R. M. and F. H. Witham. 1983. Plant Physiology. Willard Grant Press. Boston. pp. 396.
Griggs, W. H. and B. T. Iwakiri. 1961. Effects of Gibberellin and 2,4,5, -T sprays on Bartlett pear trees. Pro. Amer.Soc. Hort. Sci. 77:73 - 89.
Hield, H. Z., C. W. Coggins and M. J. Garber. 1958. Gibberellin tested in citrus. Calif. Agr. 12:9-11.
Kurosawa, E. 1926. Experimental Studies on the secretion of Fusarium Heterosporum on rice plants. Tran. Nat. Hist. Soc. Formosa. 16:213-227.
Lang, A. 1956. Induction of Flower formation in biennial Hyoscyamus by treatment with gibberellin. Naturwiss.43: -284-285.
Lawani, M. L. and E. B. Sumile. 2002. Economic valuation of seagrass beds in Guangguang cove, Mati, Davao Oriental based on support to fishery production. A production approaches. DOSCST.
Luckwill, L. C. 1957. Hormonal aspect of fruit development in higher plants. In H.K. Porter, ed., Symp. Soc. Expt- Bio. No. 11, The biological Action of Growth Substances. Cambridge b: Cambridge Univ. press, pp. 633-855.
Lugatiman, J. L. 2001. Chemical Residue on Tomato, Lycospersin Lycospersicum L. and Cabbage, Brassica Oleracea L. Grown in Araibo, Pantucan, Compostela Valley unpublished undergraduate thesis. DOSCST.
Mabesa, R. C., J. R. Deano, A. T. Aquino and R. A. V. Reveche. 2002. Techno-Guide in Growing Salad Tomato. UP Los Bafios. Philippines.
Malena, C. 1993. Gender Issues and Integrated Pest Management in African Culture -Nri Socio Economic. Series 5. Catham, UK. Pp. 1-21
Mitchell, J. E. and C. R. Angel. 1950. Plant growth regulatory substances obtained from cultures of Fusarium moniliforme. Phytopathol. 40:872.
Nelson, P. V. 1991. Greenhouse operation and management. Printice-Hall, Inc. Englewood Cliffs, New Jersey. pp. 396.
Noogle, G. R. and G. J. Fritz. 1983. Introductory Plant Physiology. Second Edition. Printice- Hall, Inc. Engle Cliffs, New Jersey.
Oram, R. F. 1989. Biology: Living Systems. Sixth Edition. Merrill Publishing Company. US. Pp. 463-464.
Paleg, G. 1965. Physiological Effects of gibberellins. Rev. Plant Physio. 16:291-322.
Phinney, B. 0.1956. Growth response of single gene mutants in maize to Gibberellic Acid. Proc. Nat. Acad. Sci. US.42.185-189
Rath, S. and C. B. S. Rajput. 1993. The effects of Betanapthoxyacetic acid on Macronutrients Status and flowering in mango. Orissa J. Agric. 3 (3-4). 220-215.
Siemonsma, J. S. and K. Piluek. 1994. PROSEA 8.: Vegetables. Bogor Indonesia.pp. 199-204.
Stodola , F. H. 1958. Sourcebook on Gibberellin. 1823-1957. Peoria Illinois. U.S. Dept. of Agri.
Stowe, B. B. and T. Yamaki. 1959. Gibberellins: Stimulants of plants growth. Science 129:499-516.
Thompson, W. W. 1967. The Effects of GA3 on the initiation of flowers and runners in the strawberry. Nature. 184:72-73.
Weaver, R. J. 1972. Plant Growth Substances in Agriculture. W.H. Freeman and Company.
Weaver, R. J. and S. B. Mc Cune. 1959. Response of certain varieties of grapes to gibberellin. Hilgardia 28:297-350.
Weaver, R. J. and R. M. Sachs. 1986. Hormonal-induced control of fruit set in berry enlargement in Vitis vinifera L.in Wightman and Setterfield. 1968, pp. 957-974.