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- Title
Role of chemical characters of the pond water growing Azolla and the anthocyanin pigment present inside dorsal cavity of the fern in population growth in two kind of ponds of Jabalpur district of Madhya Pradesh.
- Authors
Rajput, A. S.; Verma, L. N.
- Abstract
A study was conducted at J.N.K.V.V. Jabalpur to find out which of the chemical character of the pond water growing azolla, ammonia, nitrate, sulphur, phosphate and iron govern the population growth in two kinds of of ponds? Several studies have been performed on the effect of phosphorus fertilization on growth and N2fixation activity of the Azolla-Anabaena symbiosis. These observations indicate that a P level which produces good growth may not be sufficient for maximum N accumulation. Also, Watanabe (1987) reported that 6 split applications totalling 15 kg P205 ha-1resulted in equivalent growth and N accumulation by Azolla . What role is attributable to the anthoyanins pigments normally present inside dorsal leaf of the fern endowing it the charterstic red colour in nature or in green house? Long standing and stabilized ponds having water for at least 11 months throughout a year were selected for this study. One site of Barhatatal had a record of partial coverage by azolla pinnata and second site of had a record of full coverage. In laboratory conditions of green house ventilated net covered model water and p-deficient vertisol of village Surai were used in Leonard jars having a surface area of 0.019 m2. Control of deionised water was employed and 7 levels of applied phosphate (0,5, 10,30 60 and 120 ppm) were added to the soil lots . Two sets were organised, one of diffused light by using a cover of transparent polythene film and two of shaded light using a cover of blue polythene film. Our finding indicated that only phosphate controlled population density at the partial coverage pond and further, the sulphate and iron control it but nitrate negatively at full coverage pond. Anthocinin pigment is responsible for redness of frond and it is irreversible reaction means red never become green in entire life cycle of azolla.
- Subjects
AZOLLA; ANABAENA; ANTHOCYANINS
- Publication
Clarion: International Multidisciplinary Journal, 2015, Vol 4, Issue 1, p8
- ISSN
2277-1697
- Publication type
Article