Refine your search
Collections
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Soorianathasundaram, K.
- Molecular Diversity Analysis in F3 Intergeneric Population of Papaya (Carica papaya L.)
Abstract Views :213 |
PDF Views:123
Authors
Affiliations
1 Central Potato Research Station, Muthorai, Ooty, The Nilgiris, TN, IN
2 Horticultural College and Research Institute for women, Navalur Kuttapattu, Trichy, TN, IN
3 Dept. of Fruit crops, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore – 641003, IN
4 Dept. of Oil Seeds, Centre for Plant Breeding and Genetics, TNAU, Coimbatore, TN, IN
1 Central Potato Research Station, Muthorai, Ooty, The Nilgiris, TN, IN
2 Horticultural College and Research Institute for women, Navalur Kuttapattu, Trichy, TN, IN
3 Dept. of Fruit crops, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore – 641003, IN
4 Dept. of Oil Seeds, Centre for Plant Breeding and Genetics, TNAU, Coimbatore, TN, IN
Source
Journal of Horticultural Sciences, Vol 9, No 1 (2014), Pagination: 1-4Abstract
Attempts were made to estimate molecular diversity present in F3 populations of intergeneric crosses between Carica papaya L. (Var. Pusa Nanha and CP 50) and Vasconcellea cauliflora. Molecular studies revealed that PCR amplification using five ISSR primers in 40 F3 progenies yielded 53 reproducible amplified bands. Of the 53 bands, 44 were polymorphic (83.02%). Polymorphic Information Content (PIC) value ranged between 0.90 (ISSR 807 x 810) and 0.66 (ISSR 834 x 810). Similarity coefficients based on five ISSR markers ranged from 0.05 to 0.96. Maximum similarity was observed for genotypes 1, 4 and 6 of Pusa Nanha x Vasconcellea cauliflora (0.96). Minimum similarity was observed between genotypes 3 and 14 of CP 50 x Vasconcellea cauliflora (0.04). This higher genetic diversity of papaya progenies stands to contribute to development of new varieties and, using the data, further hybridization and selection can be planned.Keywords
Carica papaya, Vasconcellea cauliflora, Intergeneric Hybridization, Molecular Diversity.- Effect of Foliar Spray of Nitrogenous Chemicals on Flowering, Fruit Set and Yield in Mango (Mangifera indica L.) Cv. Alphonso
Abstract Views :213 |
PDF Views:103
Authors
Affiliations
1 Division of Horticulture and Forestry, Central Agricultural Research Institute, Port Blair, A and N Islands, IN
2 Horticultural College and Research Institute for Women, TNAU, Trichy - 620 009, Tamil Nadu, IN
3 Department of Fruit Crops, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, IN
1 Division of Horticulture and Forestry, Central Agricultural Research Institute, Port Blair, A and N Islands, IN
2 Horticultural College and Research Institute for Women, TNAU, Trichy - 620 009, Tamil Nadu, IN
3 Department of Fruit Crops, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, IN
Source
Journal of Horticultural Sciences, Vol 7, No 2 (2012), Pagination: 190-193Abstract
Effect of foliar application of various nitrogenous chemicals on flowering, fruit set and yield of mango cv. Alphonso was studied at the orchard of Horticultural College and Research Institute, Coimbatore, during 2010 - 2011. Maximum number of flowering shoots (68.7%), number of panicles (7.5/m2), panicle length (31.4cm), number of hermaphrodite flowers (282.5/panicle), fruit set (17.0%), number of fruits (146.0/tree) and fruit yield (43.8 kg/tree) was obtained with foliar spray of KNO3 at 2% concentration. Higher content of chlorophyll (1.7g mg-1), carbohydrate (14.5g 100g-1) and nitrogen (1.43%) and higher C/N ratio (10.18) were also recorded in plants sprayed with 2% KNO3, followed by 1% KNO3.Keywords
Mango, Flowering, Fruit Set, Nitrogenous Chemicals.- Correlation of Leaf Parameters with Incidence of Papaya Ring Spot Virus in Cultivated Papaya and its Wild Relatives
Abstract Views :166 |
PDF Views:116
Authors
Affiliations
1 ICAR-Indian Institute of Horticultural Research, Bengaluru, IN
2 Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore, IN
1 ICAR-Indian Institute of Horticultural Research, Bengaluru, IN
2 Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore, IN
Source
Journal of Horticultural Sciences, Vol 14, No 2 (2019), Pagination: 130-136Abstract
Papaya ring spot virus (PRSV) disease has been the major impediment in papaya cultivation. The disease is transmitted through three aphid vectors and field tolerance towards this disease varies among Carica papaya cultivars as well as within the Vasconcellea genus. Leaf morphological traits are known to have influence on the probing preferences of aphids. Hence, this study was conducted to know whether the leaf parameters could contribute to the incidence of PRSV possibly by influencing the probing or feeding behaviour of aphid vectors. Leaf parameters viz., leaf thickness, leaf epicuticular wax content, presence and type of trichomes, trichome density were correlated with disease incidence at field conditions. The result revealed that leaf thickness along with epicuticular wax content had significant negative correlation with disease incidence. Similarly, trichome density had negative impact on disease incidence at 99.92% significance level. High epicuticular wax content and high trichome density in V. cauliflora and V. cundinamarcensis were found to be negatively associated with low to very low infection indicating that these parameters may have limited the vector transmission significantly.Keywords
Epicuticular Wax Content, Papaya, Trichome Density and Vasconcellea.References
- Bin, F. 1979. Influenza dei peli glandolari sugli insetti in Lycopersicon spp. Frust Ent., 15:271-283.
- Kalleshwaraswamy, C.M and Krishnakumar, N.K. 2008. Transmission efficiency of Papaya ringspot virus by three aphid species. Phytopathology, 98(5):541-546.
- Dinesh, M.R. 2010. Papaya breeding in India. Acta Hort., 851: 69-75
- Ebercon, A., Blum, A and Jordan, W.R. 1977. A rapid colorimetric method for epicuticular wax content of sorghum leaves. Crop Sci., 17: 179180.
- Goffreda, J.C., Mutschler, M.A., Ave´ D.A., Tingey, W.M and Steffens, J.C. 1989. Aphid deterrence by glucose estersin glandular trichome exudate of the wild tomato, Lycopersicon pennellii. J Chem Ecol.,15:2135-2147.
- Guerrieri, E and Digilio, M.C. 2008. Belowground mycorrhizal endosymbiosys and aboveground insects: Can multilevel interactions be exploited for a sustainable control of pests? Molecular mechanisms of plant and microbe coexistence. In: Nautiyal CS, Dion P, editors. Heidelberg: Springer-Verlag. p. 125-152.
- Musetti, L and Neal, J.J. 1997. Resistance to the pink potato aphid, Macrosiphum euphorbiae, in two accessions of Lycopersiconhirsutum f. glabratum. Entomol Exp Appl., 84:137-146.
- Ostrand, F., Wallis, I.R., Davies, N.W., Matsuki, M and Steinbauer, M.J. 2008. Causes and consequences of hostexpansion by Mnesamela privata. J. Chem.Ecol.,34: 153-167.
- Shepherd, T., Robertson, G.W., Griffiths, D.W and Birch, A.N.E.1999. Epicuticular wax ester and triacyloglycerol compositionin relation to aphid infestation and resistance in red raspberry (Rubus idaeus L.). Phytochemistry.52: 12551267.
- Wang, E., Hall, J.T and Wagner, G.J. 2004. Transgenic Nicotiana tabacum L. with enhanced trichome exudates cembratrieneols has reduced aphid infestation in the field. Mol. Breed. 13: 49-57
- Wojcicka, A. 2015. Surface waxes as a plant defense barrier towards grain aphid. Acta Biologica Cracoviensia Series Botanica.57(1): 95-103.