VARIABILITY STUDIES IN MELON (Cucumis melo L.) F2 POPULATION FOR RESISTANCE TO DOWNY MILDEW AND POWDERY MILDEW DISEASES AND MORPHOLOGICAL TRAITS
| dc.contributor.advisor | M., SHIVAPRIYA | |
| dc.contributor.author | K. R., KAVYA | |
| dc.contributor.other | H. B., LINGAIAH | |
| dc.contributor.other | E., SREENIVASA RAO | |
| dc.contributor.other | S. C., VENKATESHA | |
| dc.contributor.other | C. G., SANGEETHA | |
| dc.date.accessioned | 2022-07-28T11:18:54Z | |
| dc.date.available | 2022-07-28T11:18:54Z | |
| dc.date.issued | 2017-06 | |
| dc.description.abstract | Melon (Cucumis melo L., 2n=24) of Cucurbitaceae family has great importance because of its commercial value and is grown mostly for its fruits. Melon cultivation is threatened by downy mildew and powdery mildew diseases which hinder the production and reduce the quality of fruits. Indian melon landraces are being used worldwide as disease resistant source in gene introgression to cultivated lines through different breeding methods. In Karnataka state melon landraces are grown in small patches. In our study, the F2 segregating populations developed using disease susceptible, superior variety Kashi Madhu and downy mildew and powdery mildew resistant landrace of Karnataka, COHB38 were field evaluated at College of Horticulture, Bengaluru for resistance to diseases and morphological traits based on DUS guidelines. Downy mildew disease resistance screening included parents, F1 and two F2 populations (191 and 102 F2s) of Kashi Madhu x COHB38 under natural disease conditions. Another set of F2s (152) along with parents and F1 were evaluated for powdery mildew disease resistance. The reaction of F2s for both the diseases showed a continuous distribution from highly resistant to highly susceptible phenotypes and revealed the quantitative nature of resistance in resistant parent COHB38. Very wide variation was observed among F2s for all morphological traits. Among 31 qualitative characters, 13 were dimorphic and 18 were polymorphic. Out of 15 quantitative characters, 14 were polymorphic except seed length. The resistant plants along with superior fruit characters can be selfed further and utilised in developing superior melon lines resistant to diseases. | en_US |
| dc.identifier.other | UHS15PGM640 | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810185851 | |
| dc.keywords | Horticulture, Biotechnology, Crop Improvement, Melon, Cucurbitaceae, Mildew, Morphological, Polymorphic, Dimorphic, Landraces, Introgression, Segregating, Kashi Madhu, Phenotypes, UHS15PGM640, T314. | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 153p. (Due to pdf. there is a difference in pages in soft copy and hard copy) | en_US |
| dc.publisher | University of Horticultural Sciences, Bagalkot. (College of Horticulture, Bengaluru). | en_US |
| dc.sub | Biotechnology | en_US |
| dc.theme | VARIABILITY STUDIES IN MELON (Cucumis melo L.) F2 POPULATION FOR RESISTANCE TO DOWNY MILDEW AND POWDERY MILDEW DISEASES AND MORPHOLOGICAL TRAITS | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | VARIABILITY STUDIES IN MELON (Cucumis melo L.) F2 POPULATION FOR RESISTANCE TO DOWNY MILDEW AND POWDERY MILDEW DISEASES AND MORPHOLOGICAL TRAITS | en_US |
| dc.type | Thesis | en_US |