Evaluation of moisture stress response of Cynodon dactylon (L.) and its recuperative ability by using plant growth regulators

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dc.contributor.advisorMahanta, Pradip
dc.contributor.authorGogoi, Prarthana
dc.date.accessioned2020-06-16T10:45:22Z
dc.date.available2020-06-16T10:45:22Z
dc.date.issued2019-05
dc.description.abstractAn experiment was conducted to study the “Evaluation of moisture stress response of Cynodon dactylon (L.) and its recuperative ability by using plant growth regulators” with three different plant growth regulators like Trinexapac-ethyl (TE), Paclobutrazol (PBZ) and Flurprimidol (FD) under nine different concentration levels in the Experimental Farm, Department of Horticulture, Assam Agricultural University, Jorhat during 2015-2018. The experiment was laid out in factorial Randomized Block Design. The ten treatments comprised of T0 - Control, T1 -100 ppm TE, T2- 200 ppm TE, T3-300 ppm TE, T4 – 500 ppm PBZ, T5 – 1000 ppm PBZ, T6 – 1500 ppm PBZ, T7 – 50 ppm FD, F8 – 100 ppm FD and T9- 150 ppm FD. These treatments were applied in two methods, viz., during the moisture stress (Method I) and before stress (Method II). Experimental results revealed that visual characters, plant growth, physiological characters and biochemical parameters were significantly influenced by treatment, method and their interaction effect. Regarding the treatment effect Treatment T1 exhibited the highest mean performance for turf quality at before stress, turf quality at 15th day stress, turf quality at 15th day after rewatering, turf color at before stress, turf color at 15th day stress and turf color at 15th day after rewatering , coverage percentage at before stress, coverage percentage at 15th day stress and coverage percentage at 15th day after rewatering, clipping fresh weight at 15th stress and clipping fresh weight at 15th day after rewatering, clipping dry weight at 15th day stress and clipping dry weight at 15th day after rewatering, relative leaf water content at before stress, relative leaf water content at 15th day stress and relative leaf water content at 15th day after rewatering, shoot N content at before stress, shoot N content at 15th day stress and shoot N content at 15th day after rewatering, shoot P content at before stress, shoot P content at 15th day stress and shoot P content at 15th day after rewatering, shoot K content at before stress, shoot K content at 15th day stress and shoot K content at 15th day after rewatering, stolon length at before stress, stolon length at 15th day stress, stolon length at 15th day after rewatering and turf density at before stress, turf density at 15th day stress and turf density at 15th day after rewatering. Treatment T3 exihibited the highest mean performance for root fresh weight at before stress, chlorophyll content at before stress, chlorophyll content at 15th day stress and chlorophyll content at 15th day after rewatering and chlorophyll stability index at before stress, chlorophyll stability index at 15th day stress, chlorophyll stability index at 15th day after rewatering and the lowest mowing frequency. Treatment T6 exhibited the highest mean performance for root fresh weight at 15th day stress and root fresh weight at 15th day after rewatering, leaf proline content at before stress, leaf proline content at 15th day stress and leaf proline content at 15th day after rewatering and SOD enzyme activity at before stress, SOD enzyme activity at 15th day stress and SOD enzyme activity at 15th day after rewatering and Treatment To exhibited the highest mean values for clipping fresh weight and clipping dry weight at before stress condition and mowing frequency. It was observed that the treatments applied in method II exhibited the highest mean performance for all the visual, growth, physiological and biochemical characters. From the experiment it was clearly observed that most of the growth characters, physiological characters as well as biochemical characters were influenced by treatments, methods which may be due to positive effect of Plant Growth Regulator during the growth period. The Plant Growth Regulator Trinexapac-ethyl was the most effective PGR to maintain the turf quality and reducing the mowing frequency. The best treatment was found to be T1 and Method II and their interaction was considered the best for growth characters as well as quality characters, viz. colour, resiliency, rigidity and uniformity etc.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810147660
dc.language.isoenen_US
dc.publisherAAU, Jorhaten_US
dc.subHorticultureen_US
dc.subjectnullen_US
dc.themeEvaluation of moisture stress response of Cynodon dactylon (L.) and its recuperative ability by using plant growth regulatorsen_US
dc.these.typePh.Den_US
dc.titleEvaluation of moisture stress response of Cynodon dactylon (L.) and its recuperative ability by using plant growth regulatorsen_US
dc.typeThesisen_US
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