EFFECT OF NANO SCALE CaO ON PHYSIOLOGICAL AND BIOCHEMICAL ATTRIBUTES AND YIELD COMPONENTS IN GROUND NUT (Arachis hypogeae L.)

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dc.contributor.advisorBALAKRISHNA REDDY, K
dc.contributor.authorDEEPA, M
dc.date.accessioned2016-11-10T15:51:10Z
dc.date.available2016-11-10T15:51:10Z
dc.date.issued2014
dc.description.abstractThe present study was taken up to investigate effect of nano scale CaO on physiological, biochemical attributes and yield components in groundnut in comparison with gypsum and bulk calcium sources. For the purpose nano scale CaO was obtained from Nanotechnology lab, Institute of frontier technology, RARS, Tirupati and its size (30nm) and colloidal properties in terms of zeta potential (-28.2mv) were confirmed. A lab study was conducted to record its effect on seed germination, seedling vigor. Groundnut (Variety Narayani) seeds were soaked for three hours in different concentration of nano CaO and bulk CaO and CaN3.Significant differences were observed for all the parameters viz., germination percentage, root length, shoot length and seedling vigor index between the treatments. All the nano scale CaO concentrations recorded significantly higher values compared to control and bulk CaO. Among the different nano scale CaO concentrations, 500ppm recorded maximum germination percentage (97.33%) and seedling vigor index (933.15) compared to control, CaNO3 and bulk CaO. Confirmation of nano CaO transport through phloem tissue was done by using solution culture technique. The results revealed that nano CaO @ 500 and 1000ppm treated plants rejuvenated their root growth. Similarly the data on calcium content in roots, stems and leaves of treated plants with nano CaO @ 500 recorded higher calcium accumulation compared to untreated deficient plants and other calcium treatments which evidenced the entry and mobility of nano calcium into leaves and stems. Two field experiments were conducted during rabi (2012-2013) and kharif (2013) at Dryland Farm, S.V.Agricultural College, Tirupati. The experiments were laid down in Randomised block Design, replicated thrice with nine treatments and one variety (Narayani). The groundnut differed in response to treatments (gypsum soil application and foliar application of nano and bulk calcium) in terms of physiological, biochemical and yield characters. Among the nano scale CaO concentrations sprayed, 500ppm recorded highest plant height, leaf area and total dry matter compared to control, gypsum and bulk calcium sources during both the seasons. In both the seasons, 1000 and 500ppm of nano scale CaO recorded superior growth and physiological traits in terms of LAI, LAD, CGR and NAR compared to control, gypsum and bulk calcium sources. These results further establish advantage of spraying nano CaO @ 500ppm for sustained chlorophyll activity till harvest in terms of higher LAI, LAD and total chlorophyll. 500ppm of nano scale CaO treatment also recorded highest biochemical activity with lowest relative membrane injury compared to control, gypsum and bulk calcium sources. Lowest relative injury percent thus maintained less cell membrane damage. This is an useful traits in terms of moisture and temperature stress tolerance. Highest SOD and catalase activity is useful in quenching of superoxide and H2O2 free radicals generated at stress conditions. Highest yield and yield components were recorded by nano CaO @ 500ppm that indicates the enhanced effect of calcium in reduced nano form (69.9nm) compared to control, gypsum, CaNO3 and bulk CaO. Partitioning of calcium content in different plant parts specially kernels revealed that higher calcium content was recorded by nano CaO 500, 100ppm and gypsum compared to control and bulk calcium sources during both the seasons. The field study also that indicates the mobility of nano calcium from leaves to kernels through phloem tissue. Results of this study established that nano based calcium oxide showed mobility in phloem when it was sprayed on leaves and triggered several positive physiological effects in groundnut plants specially at 500ppm foliar spray imposed at 35DAS. Foliar spraying of nano CaO (69.9nm) @ 500ppm can be recommended in groundnut instead of soil application of gypsum specially under rainfed conditions.en_US
dc.identifier.citation173p.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/84937
dc.language.isoen_USen_US
dc.publisherACHARYA N.G. RANGA AGRICULTURAL UNIVERSITYen_US
dc.relation.ispartofseriesD5019;
dc.subCrop Physiologyen_US
dc.subjectcalcium, gypsum, groundnuts, planting, yields, diseases, drying, vegetative propagation, developmental stages, biological development, NANO, CaO, PHYSIOLOGICAL, BIOCHEMICAL, ATTRIBUTES, YIELD COMPONENTS ,GROUND NUT, Arachis hypogeae L.en_US
dc.titleEFFECT OF NANO SCALE CaO ON PHYSIOLOGICAL AND BIOCHEMICAL ATTRIBUTES AND YIELD COMPONENTS IN GROUND NUT (Arachis hypogeae L.)en_US
dc.typeThesisen_US
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EFFECT OF NANO SCALE CaO ON PHYSIOLOGICAL AND BIOCHEMICAL ATTRIBUTES AND YIELD COMPONENTS IN GROUND NUT (Arachis hypogeae L.)
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