ETHYLENE MEDIATED RESISTANCE AGAINST BACTERIAL BLIGHT IN POMEGRANATE AND ITS INFLUENCE ON PHENOLOGICAL CHARACTERS
| dc.contributor.advisor | M. P., BASAVARAJAPPA | |
| dc.contributor.advisor | G., MANJUNATH | |
| dc.contributor.author | DASHYAL, MAHESH S. | |
| dc.contributor.other | D. P., PRAKASH | |
| dc.contributor.other | MULLA, SAYEED WAJEED R. | |
| dc.contributor.other | GHANDHE, ANITA RAJKUMAR | |
| dc.date.accessioned | 2023-03-06T05:53:43Z | |
| dc.date.available | 2023-03-06T05:53:43Z | |
| dc.date.issued | 2021-06 | |
| dc.description.abstract | Bacterial blight in pomegranate is a major disease caused by Xanthomonas axonopodis pv. punicae, which has resulted in significant economic losses in terms of both quality and quantity. The ineffectiveness of most chemicals in controlling this disease has shifted grower attention to the quest for a new molecule and hence the use of plant growth regulators and signaling molecules is a novel approach to control the disease as well as improving quality and quantity attributes of pomegranate. Hence, the aim of present study was to determine the impact of plant hormone ethylene on bacterial blight of pomegranate and also its effect on phenological characters. Result shown that, in present study, among all cultivars, foliar application of ethrel at 300ppm shown higher pathogen load (9371.62-folds) and disease severity (28.64%) in Bhagwa cultivar. Application of ACC deaminase producing bioagents like Pseudomonas putida and Trichoderma asperellum resulted in reduction of disease severity as well as ethylene levels (ACC oxidase) in plants under greenhouse condition. Field study revealed that foliar application of ethrel (200ppm) at different growth and developmental stages enhanced production of productive flowers (38.17%), yield (15.24 t/ha), colour of pomegranate but meanwhile it also shown higher disease severity on leaves (6.65%), fruits (5.17%) and twigs (0.57%). Among different hormones applied, ethrel application shown maximum disease severity (33.2%) and salicylic acid shown lowest disease severity (15.08%) under greenhouse condition. Hence, it is evident from present study that ethylene is a negative regulator of disease resistance and application of ethylene deaminase producing bioagents like Pseudomonas putida and Trichoderma asperellum decreased the bacterial blight disease severity and also ethylene levels (ACC Oxidase) in plants, meanwhile ethylene application increased number of productive flowers, yield and quality attributes of pomegranate. | en_US |
| dc.identifier.other | UHS17PGD220 | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810194801 | |
| dc.keywords | Horticulture, Plant Pathology, Bacterial Blight, Pomegranate, Molecule, Ethylene, Ethrel, Phenological, Pathogen, Bioagents, Pseudomonas Putida, Trichoderma Asperellum, Salicylic Acid, UHS17PGD220. | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 166p. (Due to pdf. conversion there is a difference in pages of soft copy and hard copy). | en_US |
| dc.publisher | University of Horticultural Sciences Bagalkot. (College of Horticulture, Bagalkot). | en_US |
| dc.sub | Plant Pathology | en_US |
| dc.theme | ETHYLENE MEDIATED RESISTANCE AGAINST BACTERIAL BLIGHT IN POMEGRANATE AND ITS INFLUENCE ON PHENOLOGICAL CHARACTERS | en_US |
| dc.these.type | Ph.D | en_US |
| dc.title | ETHYLENE MEDIATED RESISTANCE AGAINST BACTERIAL BLIGHT IN POMEGRANATE AND ITS INFLUENCE ON PHENOLOGICAL CHARACTERS | en_US |
| dc.type | Thesis | en_US |