Cytokinin-Like And Growth-Promoting Activity Of Coconut Water As Related To Its Effect On Pole Sitao Pod Deterioration

Ofelia  K. Bautista,; Antonio  L. Acedo,

Cytokinin-Like And Growth-Promoting Activity Of Coconut Water As Related To Its Effect On Pole Sitao Pod Deterioration

Abstract:

Cytokinin-like activity of coconut water was highest from 12-month old nuts and lowest from 8-month old nuts. Total growth-promoting activity showed a similar trend but was generally greater indicating the possible presence of other contributory compounds. Coconut water from 10- and 12-month old nuts markedly retarded yellowing and chlorophyll loss in pole sitao pods. However, only the latter significantly improved the visual quality of the pods. All treatments did not affect weight loss- and the textural properties of the pods. A slight stimulation of the respiratory activity was observed in all coconut watertreated pods.

References:

BAUTISTA, O.K. and DATA, E.S. 1976. Postharvest changes in snap cowpea pods (Vigna sinensis Stickmin Savi Ex Hassk) under two storage conditions. Phil. J. Crop Sci. 1(4):191-194.
CAPLIN, S.M. and STEWARD, F.C. 1948. Effect of coconut mill on the growth of explants from carrot root. Science 108:655-657.
CAPLIN, S.M. and STEWARD, F.C. 1952. Investigation on the growth and metabolism of plant cells. I. Variables affecting the growth of tissue explants and the development of a quantitative method using carrot root. Ann. Bot. 16:219-236.
CEDO, M.L.O. 1983. Ontogenetic studies on the development of maka-puno and normal coconut (Cocos nucifera L.) endosperm. Unpublished M.S. Thesis, UPLB, College, Laguna.
DEL ROSARIO, A.G. 1980. Cytokinin and growth-promoting activity of makapuno and non-makapuno coconut endosperm. Unpublished M.S. Thesis, UPLB, College, Laguna.
DEL ROSARIO, R.R. 1978. The composition and utilization of coconut water. In PCRDF Professorial Chair Lecture.
FLETCHER, R.A., KALLINUMBILL, V. and STEELE, P. 1982. An improved bioassay for cytokinins using cucumber cotyledons. Plant Physiol. 67:675-677.
FOOD AND NUTRITION RESEARCH CENTER (FNRC). 1964. Food composition table recommended for use in the Philippines. Handbook I. Manila, Philippines. 134 pp.
FULLER, G., KHUNLE, J.A., CORSE, J. W. and MACKEY, B.E. 1977. Use of natural cytokinins to extend the storage life of brocolli (Brassica oleracea Italica Group). J. Am. Soc. Hort. Sci. 102:480-484.
GAZIT, S. and BLUMENFIELD, A. 1970. Cytokinin and inhibitor activi-ties in the avocado fruit mesocarp. Plant Physiol. 46:334-336.
GOLDTHWAITE, J. 1974. Energy metabolism of Rumex leaf tissues in the presence of senescence-regulating hormone and sucrose. Plant Physiol. 54:397-403.
HISCOX, J.D. and ISRAELSTAM, G.F. 1980. A method for the extrac-tion of chlorophyll from leaf tissues without maceration. Can. J. Bot. 57:1332-1334.
KURAISHI, S. and OKUMURA, F.S. 1961. A new leaf growth-stimulating factor, phylococcosin, from coconut milk. Nature 189: 148-149.
NOREL, G. and WESTMORE, R.H. 1951. Tissue culture of monoco-tyledons. Amer. J. Bot. 38:138.
NATHANAEL, W.R.N. 1952. The sugars in coconut water. Ceylon Coco. Quart. 3(4):193-199.
NICKELL, L.G. 1950. Effect of coconut milk on the growth in vitro of plant virus tumor tissue. Bot. Gaz. 112:225.
ORITANI, T. and YOSHIDA, R. 1971. Studies on nitrogen metabolism in crop plants. XI. The changes in abscissic acid and cytokinin-like activity accompanying growth and senescence in crop plants. Proc. Crop Sci. Soc. Japan 40:325-337.
POLLARD, J.K., SHANTZ, E.M. and STEWARD, F.C. 1961. Hexitols in coconut milk: Their role in nurture of dividing cells. Plant Physiol. 36:492, 500.
RADLEY, M. and DEAR, E. 1958. Occurrence of gibberellin-like sub-stances in coconut milk. Nature 182:1098.
SANDSTEDT, R. 1971. Relative activities of some cytokinin fraction of developing cotton fruit. Physiol Plant. 30:168-170.
SHAW, M. and SRIVASTAVA, B.I.S. 1964. Purine-like substances from coconut endosperm and their effect on senescence of excised cereal leaves. Plant Physiol. 39:528, 531.
STEWARD, F.C. and CAPLIN, S.M. 1952. Investigations on growth and metabolism of plant cells. IV. Evidence on the role of coconut milk factor in development. Ann. Bot. 16:491, 498.
TULECKE, W., TAGGART, R. and COLAVITO, L. 1965. The com-position of coconut water as related to its use in plant tissue culture. Contrib. Boyce Thompson Inst. 21:115.
VAN STADEN, J.V. 1976. The identification of zeatin glucoside from coconut milk. Physiol. Plant. 36:123.
VAN STADEN, J.V. and DREWES, S.E. 1974. Identification of cell-division inducing compounds from coconut milk. Physiol. Plant. 32:347.
VAN STADEN, J.V. and DREWES, S.E. 1975. Identification of zeatin and zeatin riboside in coconut milk. Physiol. Plant. 34:106-108.
VISTA, T. 1915. Chemical changes in the ripening coconut. Phil. Agric. For. 4:109-115.
YOSHIDA, S., FORNO, D.A., COCK, J.H. and GOMEZ, Κ.Α. 1976. Laboratory manual for physiological studies of rice. 3^rd ed. Inter-national Rice Research Institute, Los Baños, Laguna. Phil.