Abstract
Plant Growth Regulator (PGR) had been widely utilized in improving plant quality and productivity. The mechanism includes the manipulation of plant adaptibility over environmental stress. This research aimed to study the efect of PGR on the growth of C. tagal seedling and to formulate the applicable treatment to improve its growth performance. The research was conducted through laboratory experiment, including tthe combination of NAA and GA3 with the designed concentration of 0 ppm, 150 ppm and 300 ppm. The experiment lasted for one month and involved weekly observation. The plants were treated by spraying once every three days. Observations were conducted to the survival rate, height increment and leaf number development. ANOVA was conducted as statistical analysis method. The result showed that there were no significant effect of PGRs on the height increment of C. tagal seedling. The survival rate was lowest in the control and 150 ppm NAA treatments, while treatment with 300 ppm GA3was highest. The application of 300 ppm GA3was the best treatment for the livelihood of C. tagal seedling, while the application of 150 ppm GA3 was considerable alternative due to its growth performance. This research provide a novel finding concerning the application of PGRs on the seeding process of C. tagal. Thus, it could be applied in the seeding activities by the mangrove farmers to improve the productivity and quality of mangrove seedling.
Highlights
The improvement of mangrove seedling quality is required in order to enhance its adaptation capability
This research aimed to study the effect of plant growth regulator on the growth of C. tagal seedling and to formulate the best applicable treatment to improve its growth performance
The experiment indicated that C. tagal seedlings responded the Plant Growth Regulator (PGR) application
Summary
The improvement of mangrove seedling quality is required in order to enhance its adaptation capability. Increasing upland and coastal area development had caused the severe damage of the ecosystem (Shahbudin, et al, 2012). Plantation efforts had been conducted to hinder further coastal degradation and to initiate the ecosystem recovery(Andradi-Brown, et al, 2013). Rehabilitation of mangrove ecosystem is generally conducted through plantation of pioneer species such as Avicennia marina and Rhizophora mucronata (Munandar, et al, 2014). Unsuitable environmental condition had been considered as the main affecting factor (Sofawi, et al, 2017). Coastal degradation lead to the change of erosionsedimentation pattern, soil structure, tidal area, inundation periods and etc (Lageweg & Slangen, 2017). The environmental condition can no longer support the establishment of several mangrove species, while the existing plants might get disturbed as well
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