Fluoride Inhibits Root Water Transport and Affects Morpho-Physio-Biochemical Characteristics in Guar (Cyamopsis tetragonoloba)

This study focuses on the fluoride contaminated irrigation water on guar (Cyamopsis tetragonoloba) plants to investigate establishment of growth, development and physio-biochemical activity associated with yield characteristics. Long-term fluoride irrigation influence was also recorded using 15-days old established seedlings raised in earthen pots. These fully established guar plants irrigated differentially by using fluoride contaminated water i.e. 1.42 (without contamination of F), 4.02 (Unnao district, naturally contaminated water), 25, 50, 100, 200 & 400 ppm (artificially contaminated water) applied in pots. The fluoride irrigation frequency n=6 (weekly) was maintained and afterwards terminated/harvested. The results showed reduction in morpho-physiological characteristics in relation to without contaminated water (1.42 ppm) of fluoride in both cultivars i.e. HG2–20 and RGC-936. Similar trends were found in enzymatic activity such as catalase, peroxidase and superoxide dismutase in fluoride contaminated irrigation water. The higher loss was observed in 400ppmF as compared to 25, 50, 100 and 200ppm of fluoride contaminated water in both cultivars.