No abstract

Abstract. The purpose of this study was to research about supplementation of different concentrations of the substrate on the degradation rate of xenobiotic and to determine the optimal concentrations of the auxiliary substrates that are most beneficial of xenobiotic degradation rate. 2,4-dichlorophenol acid (2,4-D) was used representative xenobiotic organic compounds, while peptone and sugar used for auxiliary substrates. The activated sludge was completely break down 100 mg/l of 2,4-D for three consecutive times. The different concentrations between biogenic substracts of sucrose and peptone were fed separately or combined into the medium containing 200 mg/l of 2,4-D and 140 mg SS/l of activated sludge. The results showed that sugar and peptone could affect 2,4-D degradation rate to several different degree at different concentrations. In separate supplementation, 2,4-D degradation completed within 25 hours, 40 mg/l sugar and 150 mg/l peptone concentrations were found to be the optimal concentrations. In combined case, 2,4-D was consumed totally within 20 hours and the optimal concentration of the combined sugar and peptone concentrations were 40 and 150 mg/l, respectively.

The aim of these studies was mainly to investigate the effects of monochromatic LEDs applied singly on the in vitro plant growth and morphogenesis. Various morphological and physiological parameters are considered that influence the growth and development of plants in vitro under red LED light as compared to those under normal light. Upon exposure to LED, in vitro-raised plants have shown significant improvements in growth and morphogenesis. In particular, red and blue lights, either alone or in combination, have a significant influence on plant growth. The present study gives an overview of the fundamentals of LEDs and describes their effects on in vitro plant growth and morphogenesis and their future potentials. The main objective of this study was to carry out line and combing ability of plant growth on tomato.

This research focuses on types of substrate materials (rice husk, coconut fiber, sand), the rate of media mix between coconut fiber, rice, and concentrations of Thiamine HCl (vitamin B1) on the growth of Rainbow Vinegar (Beta vulgaris subsp. Vulgaris). In the studies of nutritional absorption and metal toxicity in the roof, it is essential to growing plants without technical damage. The results showed that Hoagland solution combined coconut fiber, sand, and Thiamine HCl (vitamin B1) suitable for Beta vulgaris subsp. Vulgaris. The Rainbow grows remarkably from 20 days to 30 days for a faster, cleaner, and cultivating soil environment. The method presented here provides. Vulgaris to obtain a healthy plant having a well-developed root system with many lateral roots.