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Rekha, A.
- Development of Normalized Cdna Library from Fusarium Wilt Infected Roots of a Tolerant Banana Genotype 'Calcutta-4' Musa acuminata ssp. burmannicoides
Abstract Views :168 |
PDF Views:104
Authors
Affiliations
1 Division of Biotechnology, ICAR - Indian Institute of Horticultural Research, Hesaraghatt Lake Post, Bengaluru - 560089, IN
2 Division of Fruit Crops, ICAR - Indian Institute of Horticultural Research, Bengaluru, IN
1 Division of Biotechnology, ICAR - Indian Institute of Horticultural Research, Hesaraghatt Lake Post, Bengaluru - 560089, IN
2 Division of Fruit Crops, ICAR - Indian Institute of Horticultural Research, Bengaluru, IN
Source
Journal of Horticultural Sciences, Vol 9, No 1 (2014), Pagination: 55-60Abstract
Management of the most devasting disease, Fusarium wilt of banana, caused by the fungus Fusarium oxysporum f. sp., cubense, is a challenge to the plant pathologist and the banana grower. Currently, genomics is providing the way for understanding plant defense mechanism, having acquired an important place in crop improvement. To identify the relevant genes and to understand the defense mechanism induced during Fusarium wilt infection, a normalized cDNA library was constructed from infected ischolar_main samples of a tolerant banana genotype, Musa acuminata spp. burmannicoides 'Calcutta-4', by duplex specific nuclease (DSN) based normalization, using the SMART (switching mechanism at 5' end of RNA transcript) full-length cDNA construction method. Sequencing and analysis of 600 clones revealed 392 non-redundant clones. In all, of 88% of the sequences were annotated using Musa genome database, and the remaining 12% were identified as novel loci not annotated. We observed several resistance genes, ROS scavenging genes and genes involved in ubiquitin-proteosome pathway in this study. These genes may have a possible role against Foc infection. These sequences would enrich the EST data developed against specific stress, which is an indispensable tool for predicting functional genes and understanding the defense mechanism.Keywords
Fusarium oxysporum f.sp. cubense, Banana, cDNA Library, Defense Response, Normalization.- Genetic Correlation and Cluster Analysis in Sapota (Manilkara zapota)
Abstract Views :215 |
PDF Views:113
Authors
Affiliations
1 Division of Fruit Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore – 560 089, IN
2 Section of Economics and Statistics, IN
1 Division of Fruit Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore – 560 089, IN
2 Section of Economics and Statistics, IN
Source
Journal of Horticultural Sciences, Vol 6, No 2 (2011), Pagination: 101-104Abstract
Sapota is classified into two main types based on fruit shape as 'round' and 'oval'. However, there are several intermediates, as, it is a heterozygous tree crop. In this study, an effort was made to group available variability in sapota based on fruit characters and to analyze it. This helps in selection of parents for use in further breeding programmes. Cluster analysis revealed four definite clusters. High variability was observed for fresh-fruit weight, fruit length, fruit girth, fruit weight at ripening, pulp weight, peel weight, number of seeds and TSS. Correlation studies among fruit parameters indicated positive relationship between all the parameters studied, except TSS which had negative relationship with the rest of the fruit parameters. Selection of distantly placed cultivars in breeding programs stands to result in better progeny for further evaluation.Keywords
Sapota, Fruit Parameters, Variability, Correlation, Clusters.- Chromosome Studies and Karyotype Analysis of some Triploid Banana (Musa Species) Cultivars of AAA Genomic Group
Abstract Views :249 |
PDF Views:146
Authors
A. Rekha
1,
S. C. Hiremath
2
Affiliations
1 Division of Fruit Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore-560 089, IN
2 Department of Botany, Karnataka University, Dharwad - 580 003, IN
1 Division of Fruit Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore-560 089, IN
2 Department of Botany, Karnataka University, Dharwad - 580 003, IN
Source
Journal of Horticultural Sciences, Vol 3, No 1 (2008), Pagination: 30-34Abstract
Bananas are the highly evolved, oldest fruits known to mankind. The Cavendish group cultivars are popular commercial varieties. AAA genomic group cultivars are said to have evolved from the wild AA Musa acuminata species by natural hybridization and polyploidization and these vigorous triploids were selected by man for cultivation. Basic cytological studies on banana are comparatively few due to the plant's complex nature. In this report, karyo-morphological studies on five AAA Cavendish group cultivars i.e. Robusta, Dwarf Cavendish, Grand Naine, Gros Michel and Red banana are reported. All the five cultivars had similar karyotype, except cv. Robusta. Total chromosome length was highest in Red banana and lowest in cv. Gros Michel.Keywords
Cavendish Banana, Triploid, Karyo-Morphology.- Management of Eulophid Seed Borer, Anselmella kerrichi (Narayanan et al.) (Hymenoptera : Chalcidoidea : Eulophidae) on Jamun
Abstract Views :168 |
PDF Views:99
Authors
Affiliations
1 Division of Entomology and Nematology, ICAR- Indian Institute of Horticultural Research, Hesaraghatta Lake PO, Bengaluru - 560 089, IN
2 Division of Fruit crops, ICAR- Indian Institute of Horticultural Research, Hesaraghatta Lake PO, Bengaluru - 560 089, IN
1 Division of Entomology and Nematology, ICAR- Indian Institute of Horticultural Research, Hesaraghatta Lake PO, Bengaluru - 560 089, IN
2 Division of Fruit crops, ICAR- Indian Institute of Horticultural Research, Hesaraghatta Lake PO, Bengaluru - 560 089, IN
Source
Journal of Horticultural Sciences, Vol 14, No 2 (2019), Pagination: 166-168Abstract
A field experiment was conducted at ICAR-Indian Institute of Horticultural Research, Bengaluru during 2019 to evaluate certain insecticides and botanicals against jamun seed borer, Anselmella keriichi (Naryananet al.). The results revealed that the seed borer infestation was significantly low in λ-cyhalothrin (4.20%) and cypermethrin (5.77%) treatments followed by spinosad (6.36%), deltamethrin (6.40%) and imidacloprid (6.71%) (F=7.9; df=11; P<0.0001). Among the organic insecticides viz., spinosad @ 0.2 mL/L showed significant reduction in jamun seed borer infestation.Keywords
Syziumcumini, Chemical Insecticides, Botanical Insecticides, Hymenoptera and Insect Pest.References
- Anjana S., P.D. Kamala Jayanthi, B.R. JayanthiMala and A. Rekha. 2019. Differential attraction of Jamun seed borer, Anselmella kerrichi (Narayanan, Subba Rao & Patel, 1988) to various colour traps. Pest Man. in Hort. Eco.25 (1):121-122
- Kamala Jayanthi P. D., Anjana S., Rekha, A., Jayanthi Mala, B. R. 2019. Eulophid seed borer, Anselmella kerrichi (Narayanan et al.; Hymenoptera), an emerging pest of Jamun. Cur, Sci., 117 (6): 922-924
- Narayanan, E.S., Subba Rao, B.R. and Patel, G.A.A.1957. A new pteromalid genus from India. Ind. J. Ent. 19: 202-203
- Shabozoi, N.U.K., Abro, G.H., Syed, T.S., Awan, M.S., 2011. Economic appraisal of pest management options in Okra. Pak. J. of Zool.43, 869-879.
- Warrier, P, Nambiar, V. and Ramankutty, C. 1996. Indian Medical Plants, Orient Longman Ltd., Hyderabad, 5: 225-228