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Gad, M., Abdul-Hafeez, E., Ibrahim, O. (2016). FOLIAR APPLICATION OF SALICYLIC ACID AND GIBBERELLIC ACID ENHANCES GROWTH AND FLOWERING OF Ixora coccinea L. PLANTS. Journal of Plant Production, 7(1), 85-91. doi: 10.21608/jpp.2016.43477
M. M. Gad; E. Y. Abdul-Hafeez; O. H. M. Ibrahim. "FOLIAR APPLICATION OF SALICYLIC ACID AND GIBBERELLIC ACID ENHANCES GROWTH AND FLOWERING OF Ixora coccinea L. PLANTS". Journal of Plant Production, 7, 1, 2016, 85-91. doi: 10.21608/jpp.2016.43477
Gad, M., Abdul-Hafeez, E., Ibrahim, O. (2016). 'FOLIAR APPLICATION OF SALICYLIC ACID AND GIBBERELLIC ACID ENHANCES GROWTH AND FLOWERING OF Ixora coccinea L. PLANTS', Journal of Plant Production, 7(1), pp. 85-91. doi: 10.21608/jpp.2016.43477
Gad, M., Abdul-Hafeez, E., Ibrahim, O. FOLIAR APPLICATION OF SALICYLIC ACID AND GIBBERELLIC ACID ENHANCES GROWTH AND FLOWERING OF Ixora coccinea L. PLANTS. Journal of Plant Production, 2016; 7(1): 85-91. doi: 10.21608/jpp.2016.43477

FOLIAR APPLICATION OF SALICYLIC ACID AND GIBBERELLIC ACID ENHANCES GROWTH AND FLOWERING OF Ixora coccinea L. PLANTS

Article 11, Volume 7, Issue 1, January 2016, Page 85-91  XML PDF (551.78 K)
Document Type: Original Article
DOI: 10.21608/jpp.2016.43477
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Authors
M. M. Gad; E. Y. Abdul-Hafeez; O. H. M. Ibrahim email
Ornamental Plants and Landscape Gardening Department, Faculty of Agriculture, Assiut University, Assiut, Egypt.
Abstract
Foliar application effects of salicylic acid (SA) and gibberellic acid (GA3) were investigated on growth and flowering of Ixora coccinea L. plants. Four concentrations (100, 200, 300 and 400 ppm) of both SA and GA3 were sprayed in addition to the control (water-sprayed plants). Results indicated that all growth and flowering characteristics of Ixora plants were increased by all concentrations of SA or GA3 compared to the untreated plants. Concerning salicylic acid, the lowest concentration (100 ppm) produced the highest plants while 200 ppm increased leaf area and shoot/root ratio. Number of leaves and plant pigments (chlorophyll a, b, a+b and carotenoids) were increased at 300ppm concentration. Spraying the plants with 400ppm increased fresh and dry weight of shoots and roots and flower number. GA3 sprayers at 300 or 400ppm led to a significant increase in most of the characteristics studied in comparison to the untreated plants. The correlation coefficient among most of Ixora vegetative and flowering growth characteristics proved to be significant.
Keywords
Ixora coccinea; flowering plants; growth regulators; Gibberellin; plant hormones
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