A. Manivannan
YOU?
Author Swipe
View article: Combining ability studies in desi cotton (Gossypium arboreum L.) genotypes
Combining ability studies in desi cotton (Gossypium arboreum L.) genotypes Open
Background Studies on genetic variation and combining ability are essential tools to employ the suitable breeding programme, particularly for hybrid production, to exploit the heterosis in cross-pollinated crops like cotton. Thus, combinin…
View article: Characterization and screening of cotton (Gossypium hirsutum L.) germplasm for leafhopper (Amrasca biguttula biguttula (Ishida)) resistance
Characterization and screening of cotton (Gossypium hirsutum L.) germplasm for leafhopper (Amrasca biguttula biguttula (Ishida)) resistance Open
Background Cotton ( Gossypium hirsutum L.) is one of the most significant fibre and cash crops and plays an important role in Indian industrial and agricultural economies. However, over the years quantity and quality have been hampered by …
View article: Deciphering genotype performance, genotype and environment interaction of seed cotton yield and ginning outturn using GGE biplot for selection of Gossypium hirsutum for rainfed ecosystem
Deciphering genotype performance, genotype and environment interaction of seed cotton yield and ginning outturn using GGE biplot for selection of Gossypium hirsutum for rainfed ecosystem Open
Background Cotton is mostly grown under rainfed condition by small and marginal farmers and provides economic livelihood. The assessment of adaptability of a suitable genotype is important and therefore, multilocation evaluation of genotyp…
View article: Assessing genetic variation in Gossypium barbadense L. germplasm based on fibre characters
Assessing genetic variation in Gossypium barbadense L. germplasm based on fibre characters Open
Background Gossypium barbadense L. has specific fibre in terms of its length, strength, and fineness, and known as extra-long staple (ELS) cotton, Sea–Island cotton, or Egyptian cotton. Narrow genetic base with less genetic variability is …
View article: Combining ability and gene action studies for yield and fibre traits in Gossypium arboreum using Griffings numerical and Haymans graphical approach
Combining ability and gene action studies for yield and fibre traits in Gossypium arboreum using Griffings numerical and Haymans graphical approach Open
Background For the purpose of utilising hybrid vigour to produce possible hybrids with a suitable level of stability, the knowledge of gene activity and combining ability is a crucial prerequisite before choosing desirable parents. The pre…
View article: Study on interplay of yield-related characteristics and fibre quality traits in arboreum cotton (Gossypium arboreum L.)
Study on interplay of yield-related characteristics and fibre quality traits in arboreum cotton (Gossypium arboreum L.) Open
The purpose of the study was to examine the genetic variability, heritability and genetic advance as a per cent of mean among the six parents selected through principal component analysis and 30 hybrids of desi cotton. The experiment was l…
View article: Combining ability and Gene action studies for yield and fibre characters in Gossypium arboreum using Griffings numerical and Haymans graphical approach
Combining ability and Gene action studies for yield and fibre characters in Gossypium arboreum using Griffings numerical and Haymans graphical approach Open
Background: For the purpose of utilising hybrid vigour to produce possible hybrids with a suitable level of stability, knowledge of gene activity and combining ability is a crucial prerequisite before choosing desirable parents. Results: T…
View article: Genetic variability, correlation and path analysis of upland cotton (Gossypium hirsutum L.) germplasm for seed cotton yield
Genetic variability, correlation and path analysis of upland cotton (Gossypium hirsutum L.) germplasm for seed cotton yield Open
One hundred upland cotton germplasm accessions were evaluated for eight traits to evaluate the per se performance, genetic variability, heritability, genetic advance as a per cent of mean, correlation and path analysis. The estimation of v…
View article: Combining ability and heterosis studies in cotton (Gossypium hirsutum L.) for yield and fibre quality traits
Combining ability and heterosis studies in cotton (Gossypium hirsutum L.) for yield and fibre quality traits Open
Cotton is India’s most important cash crop and it is used for agricultural and industrial purposes for all over the world. The greatest way for identifying superior hybrids and best combiners of parents is by L×T design. For analyzing the …
View article: Proteomics of Cotton Fiber Development
Proteomics of Cotton Fiber Development Open
Cotton is one of the major sources for natural fiber with strong commercial relevance. Now a day, there is a substantial demand for the extra-long, strong and fine cotton fibres are the major choices of modern textile industry. The most ef…
View article: Preference of enterprises among undergraduate students of Tamil Nadu Veterinary and Animal Sciences University
Preference of enterprises among undergraduate students of Tamil Nadu Veterinary and Animal Sciences University Open
View article: Assessing production potential and quality parameters of ELS cotton (Gossypium barbadense) genotypes
Assessing production potential and quality parameters of ELS cotton (Gossypium barbadense) genotypes Open
There is a huge demand for ELS cotton (Gossypium barbadense L.) in India for its premium fibre properities, however, the area and production of ELS is very less.There is a considerable scope for extending the area of ELS under rainfed cond…
View article: An approach for developing compactness measurement indices in cotton (Gossypium spp.)
An approach for developing compactness measurement indices in cotton (Gossypium spp.) Open
High density planting with compact genotypes proved, as high potential system of cotton cultivation. There is a need to develop proper indices to measure compactness in plant, is necessitated for screening of genotypes. Compactness measure…
View article: Constraints and Management Practices of Dairy Farming during COVID-19 Pandemic Situation
Constraints and Management Practices of Dairy Farming during COVID-19 Pandemic Situation Open
Background: The COVID-19 pandemic and subsequent lockdown have created unprecedented emergency and sudden distress on all sectors in India including the livestock sector. Among livestock sectors, dairy farming is more sensitive due to the …
View article: Knowledge level of Kanni Adu Goat farmers towards climate change in southern region of Tamil Nadu
Knowledge level of Kanni Adu Goat farmers towards climate change in southern region of Tamil Nadu Open
View article: Rice fields proceeds livelihood for nomadic duck rearers in Thanjavur district of Tamil Nadu
Rice fields proceeds livelihood for nomadic duck rearers in Thanjavur district of Tamil Nadu Open
The field research was conducted to know the nomadic duck rearing pattern in the Thanjavur district of Cauvery Delta Zone of Tamilnadu. A total of thirty migratory duck farmers were interviewed. Duck rearing plays a vital role in the livel…
View article: Socio- Economic Profile and Constraints of Dairy Farmers in Cuddalore District of Tamil Nadu
Socio- Economic Profile and Constraints of Dairy Farmers in Cuddalore District of Tamil Nadu Open
Dairy sector plays an important role in the Indian economy and in the socio economic development of the country. The present study was conducted to explore the socio-economic profile and constraints faced by the dairy farmers of Cuddalore …
View article: Expression, Purification and Bioassay of Cry55Aa protein against tomato root knot Nematode, <i>Meloidogyne incognita</i>
Expression, Purification and Bioassay of Cry55Aa protein against tomato root knot Nematode, <i>Meloidogyne incognita</i> Open
A nematicidal Cry55Aa protein was expressed and purified from E. coli cells. Higher level of expression was observed in culture induced with 0.1mM of IPTG after four hours of induction. The Cry55Aa protein was purified by resuspending the …
View article: Studies on leaf hairiness and sucking pest resistance in Egyptian cotton (Gossypium barbadense L.)
Studies on leaf hairiness and sucking pest resistance in Egyptian cotton (Gossypium barbadense L.) Open
Trichomes play a key role in imparting host plant resistance against important insect pests in cotton. They act as significant insect non-preference trait against the sucking pests of cotton thus decreasing the reliance on pesticides. In t…
View article: Multivariate Analysis based Characterization of Cotton Germplasm
Multivariate Analysis based Characterization of Cotton Germplasm Open
A set of 52 leaf hopper resistant cotton accessions were evaluated in during Kharif 2017. Multivariate analysis employing Principal Component Analysis (PCA) identified seven principal components were accounted for a cumulative variation of…
View article: Analysis of Multi-Environment Yield Trails of Clusterbean [Cyamopsis tetragonoloba (L.) Taub.] Genotypes using GGE Biplot
Analysis of Multi-Environment Yield Trails of Clusterbean [Cyamopsis tetragonoloba (L.) Taub.] Genotypes using GGE Biplot Open
A set of 42 clusterbean genotypes were evaluated for yield attributing trait pods per plant over three environments. Pooled analysis of variance showed that Environments (E) explained highest proportion of variation for pods per plant, acc…
View article: Expression, puriï¬cation and bioassay of Cry55Aa protein against tomato root knot nematode, Meloidogyne incognita
Expression, puriï¬cation and bioassay of Cry55Aa protein against tomato root knot nematode, Meloidogyne incognita Open
A nematicidal Cry55Aa protein was expressed and purified from E. coli cells. Higher level of expression was observed in culture induced with 0.1mM of IPTG after four hours of induction. The Cry55Aa protein was purified by resuspending the …
View article: In vitro Efficacy of Bio Control Agents against Cotton Leafhopper, Amrasca biguttula biguttula (Ishida) (Homoptera: Cicadellidae)
In vitro Efficacy of Bio Control Agents against Cotton Leafhopper, Amrasca biguttula biguttula (Ishida) (Homoptera: Cicadellidae) Open
The bio efficacy of selected bio control agents viz. Metarhizium anisopliae, Beauveria bassiana, Lecanicilium lecanii and Chrysoperla zastrowii against Amrasca biguttula biguttula was studied under insectary, Department of Agricultural Ent…
View article: Genetic divergence among greengram (<i>Vigna radiata</i> (L.) wilczek) germplasm collections
Genetic divergence among greengram (<i>Vigna radiata</i> (L.) wilczek) germplasm collections Open
Four hundred and forty five genotypes of greengram were evaluated for eight quantitative traits viz. plant height, number of branches/plant, number of clusters/plant, number of pods /clusters, number of pods/plant, pod length, 100- seed we…
View article: Morphological characterization of asiatic cotton (<i>G. arboreum</i>) germplasm of India
Morphological characterization of asiatic cotton (<i>G. arboreum</i>) germplasm of India Open
A set of 816 accessions of desi cotton (G.arboreum) were evaluated in augmented design 1 during Kharif 2015-16. Traits namely stem color, leaf size, leaf lobbing, leaf shape, leaf color, petal color, bract size, boll shape, boll size, leaf…
View article: Understanding the Value of Tank Ecosystem A Case Study of Tank in Singanallur, Noyyal Basin
Understanding the Value of Tank Ecosystem A Case Study of Tank in Singanallur, Noyyal Basin Open
Wetlands, in particular tank ecosystem, produce numerous benefits that are valued by the stakeholders. Despite the importance, the services are being used as free and infinite as most of them are non-marketed and are undervalued. There pre…
View article: Evaluation of new germplasm of Egyptian cotton (<i>G. barbadense</i>) through multivariate genetic component analysis
Evaluation of new germplasm of Egyptian cotton (<i>G. barbadense</i>) through multivariate genetic component analysis Open
Five new diversified Gossypium barbadense germplasm accessions NGB-555, NGB-556, NGB-557, NGB-558 and NGB-559 with a check variety Suvin were studied for correlation coefficients, genetic component and path analysis at CICR, Regional Stati…
View article: Virulence of Xenorhabdus bovienii and Xenorhabdus japonica Against Cnaphalocrocis medinalis Guenee
Virulence of Xenorhabdus bovienii and Xenorhabdus japonica Against Cnaphalocrocis medinalis Guenee Open
The symbiotic bacteria associated with entomopathogenic nematodes can be exploited as potential bio control agents against insect pests. X. bovienii, the symbiotic bacterium of S. feltiae in combination with Bt in the inoculation method, r…
View article: Screening of cotton genotypes against leafhopper, Amrasca biguttula biguttula (Ishida) (Homoptera: Cicadellidae)
Screening of cotton genotypes against leafhopper, Amrasca biguttula biguttula (Ishida) (Homoptera: Cicadellidae) Open
The study was conducted for preliminary screening trial of 350 cotton genotypes for relative susceptibility/resistance against leafhopper, Amrasca biguttula biguttula (Ishida) laid out in Department of Cotton, TNAU, Coimbatore during 2014-…