Physiological characteristics of binahong (Anredera cordifolia (ten.) steenis) on application of natural plant growth regulator

Abstract

Background and Objective: Natural Plant Growth Regulator (PGR) not only affects the growth and yield of binahong, but also affects the physiological characteristics of binahong. The objective of the research was to determine the impact of the foliar application of natural PGR (shallot extract, banana hump extract and bamboo shoot extract) on physiological characteristics of binahong. Materials and Methods: The research use a non-factorial randomized block design with 7 treatment and 4 replication. The natural PGR treatment in the research was without natural PGR; shallot extract 40 mL nLG1; bamboo shoots extract 40 mL LG1; banana hump extract 40 mL LG1; shallot extract (20 mL LG1)+bamboo shoot extract (20 mL LG1); shallot extract (20 mL LG1)+banana hump extract (20 mL LG1); bamboo shoots extract (20 mL LG1)+banana hump extract (20 mL LG1). The variables observed were chlorophyll a, chlorophyll b, total chlorophyll, density of stomata and cuticle thickness. Data were analyzed by using analysis of variance at p = 0.05. Results: The result showed that the application of natural PGR decreased stomatal density compared to control (without natural PGR application), but increased chlorophyll a, chlorophyll b and total chlorophyll. Natural PGR of shallot extract 40 mL LG1 application increased total chlorophyll. Banana hump extract 40 mL LG1 application increased the cuticle thickness compared to other natural PGR. Conclusion: It was concluded that application of natural PGR decreased the stomatal density, but increased the total chlorophyll. Banana hump extract 40 mL LG1 application increased the cuticle thickness compared to other natural PGR.