THANAWAT SUTJARITVORAKUL*, AMORN KOOMSUBSIRI, IDHISAK SRIDAM, BUNYARIT MEKSIRIPORN AND SUTEE CHUTIPAIJIT
Faculty of Science and Technology, Pathumwan Institute of Technology, Bangkok 10330, Thailand
*(e-mail : thana5306@hotmail.com; Contact : 669-2265-9250)
(Received : August 16, 2021; Accepted : October 15, 2021)
ABSTRACT
The use of metal nanomaterials to promote plant growth and inhibit plant pathogenic microorganisms is
gaining interest. In this study, zinc oxide nanoparticles (ZnONPs) were evaluated for effects on growth
and productivity of indica rice plants (Oryza sativa L.). The rice plant was exposed to ZnONPs with
different concentrations i. e. 0, 200, 600 and 800 mg/l. The plant height, weight and the number of
panicles per clump were investigated. The result showed that 200 mg/l of ZnONPs induced the highest
enhancement of plant height, weight and the number of panicles per clump with a significant difference
compared to other groups. The mathematical model of the height, weight and the number of panicles per
clump was analyzed by linear regression, and the determination coefficient (R2) of the linear regression
model was 0.86, 0.84 and 0.52, respectively. This linear regression model could be potentially extended
to the indica rice plant cultivation process in practical applications to predict the rice plant growth and
productivity in commercial cultivation.
Key words : Regression analysis, ZnO nanoparticles, growth, productivity, rice