Raipur, India
Raipur, India

Time filter

Source Type

Seventy one rice genotypes were studied for genetic variability, correlation and path analysis under irrigated and rainfed condition. The PCV values were greater than GCV, revealing little influence of environment in character expression. Analysis of variance was found to be significant for most of the traits, indicating that there is existence of genetic variability for these traits. High values of heritability along with genetic advance were observed for biological yield and harvest index. Grain yield was highly significantly and positively correlated with days to 50 per cent flowering, biological yield and harvest index, panicle length, flag leaf width and second leaf width under irrigated, whereas under rainfed condition panicle length and harvest index showed significant and positive correlation with grain yield. Biological yield and harvest index had positive direct effect on grain yield, hence selection of these two traits for grain yield will be effective.

Estimates of variability, heritability, genetic advance, correlation and path analysis were carried out in rice germplasm for nineteen characters. The highest genotypic coefficient of variation and phenotypic coefficient of variation was observed for number of effective tillers per plant, grain yield per plant and head rice recovery percentage. Estimates of heritability and genetic advance were high for number of effective tillers per plant, number of filled grains per panicle, head rice recovery percentage and grain yield per plant in genotypes indicating the predominance of additive gene action for these traits, hence direct selection may be highly effective. Correlation studies indicated that grain yield per plant had positive significant correlation with leaf width, days to 50% flowering, plant height, panicle length, number of filled grains per panicle, 100 seed weight and paddy length. A positive and significant correlation of head rice recovery percentage was also observed with leaf length, leaf width, days to 50% flowering, number of filled grains per panicle and milling percentage. Path analysis indicated that direct selection for days to 50% flowering, 100 seed weight, panicle length, leaf length and milling percentage would likely be effective for increasing grain yield. Direct selection for days to 50% flowering and number of filled grains per panicle would increase head rice recovery percentage.

Kumar V.,SKUAST Jammu | Kumar A.,University Of Kashmir | Gayen R.,IGKV
Indian Journal of Horticulture | Year: 2011

Ten genetically diverse okra genotypes were taken for the present investigation. All possible single crosses excluding reciprocals were made among these parents and all the 10 parents and 45 F 1s were sown in a randomized block design with three replications. Observations recorded on quantitative traits showed considerable genetic variability. High heritability estimates were recorded for plant height, fruit width, fruit length, number of fruits per plant and weight of fruit per plant in both parents and F 1 generation. Genetic advance and genetic gain varied from 0.13 to 79.62 and 3.03 to 37.14, respectively. On the basis of correlation studies, fruit width was negatively correlated with fruit length (- 0.792) and positively correlated with weight of fruits per plant (0.662). Fruit length was positively correlated with weight of fruit per plant (0.703). Fruit width, fruit length, number of fruit per plant and weight of fruits per plant are most desirable characters, which affect the yield and such characters should be taken into consideration while making selection for overall improvement.

Sharma S.N.,IGKV | Jhaa Z.,IGKV | Sinha R.K.,Agriculture and Agri Food Canada
Natural Product Communications | Year: 2013

Andrographolide is the principal bioactive component of the medicinal plant Andrographis paniculata, to which various diverse pharmacological properties are attributed. Traditionally, andrographolide was extracted from the leaves, stems and other parts of the plant. Leaves have the highest andrographolide content (2-3%) in comparison with the other plant parts. Adventitious root culture of leaf explants of A. paniculata was studied using different strength MS medium supplemented by different concentrations of auxins and a combination of NAA ± kinetin for growth and andrographolide production. Among the different auxin treatments in adventitious root culture, only NAA was able to induce adventitious roots. Adventitious roots grown in modified strength MS medium showed the highest root growth (26.7±1.52), as well as the highest amount of andrographolide (133.3±1.5 mg/g DW) as compared with roots grown in halfand full-strength MS medium. Growth kinetics showed maximum biomass production after five weeks of culture in different strength MS liquid medium. The produced andrographolide content was 3.5- 5.5 folds higher than that of the natural plant, depending on the medium strength.

Sharma S.N.,IGKV | Jha Z.,IGKV | Sharma D.K.,IGKV
Natural Product Communications | Year: 2011

A fingerprint was developed to evaluate ten genotypes of Andrographis paniculata (a herbal drug) collected from different geographical locations. The genotypes were assessed by HPLC and the chromatogram areas were used to construct fingerprints. Between the two fingerprints, vector of differences was defined. The scalar mean of the deviated vector was used for statistical analysis. By incorporating appropriate chemometric methods better differentiation of samples was achieved. This provides tools for extracting relevant chemical information from the obtained data. The developed method can be used as a quality control tool for rapid authentication, identity, assessment and selection of good quality natural drug from a wide variety of herbal samples.

Nirala H.,I.G.K.V. | Choubey N.K.,I.G.K.V. | Bhoi S.,I.G.K.V.
International Journal of Agricultural and Statistical Sciences | Year: 2012

The present investigation was carried out during kharif of 2009 at I.G.K.V., Raipur (C.G.), India. Blackgram variety "TU 94-2" was sown with a seed rate 20 kg ha-1. The experiment was laid in Randomized Block Design with three replications. Results revealed that highest number of pod plant-1, number of seed plant-1, number of seed pod-1, seed yield, stover yield and harvest index were obtained under hand weeding twice (20 and 40 DAS), followed by imazethapyr @ 25 g ha-1 PE and minimum was obtained under unweeded check. In the experimental field, Celosia argentia, Cynodon daclylon, Phyllanthus niruri and Cyperus rotundus were the dominant weeds and found throughout the crop growth period. The lowest density and dry matter production of weeds, weed intensity, weed growth rate, relative weed density and weed control efficiency were recorded under hand weeding twice (20 and 40 DAS), followed by imazethapyr @ 25 g ha-1 PE.

Verma S.K.,IGKV | Xalxo M.S.,IGKV | Saxena R.R.,IGKV | Verulkar S.B.,IGKV
Indian Journal of Genetics and Plant Breeding | Year: 2014

Rice is a cold sensitive plant. During off-season cultivation this crop experiences cold at seedling stage. The present study was based on 122 RILs in F13 generation developed by single-seed descent method from a cross between two indica cultivars Danteshwari and Dagad deshi. Screening was conducted during December 2012-January 2013 with seven replications at seedling stage. The genotypes exhibited marked variation for cold tolerance, with an average of 3.52 score on 1-9 scale and 0.62 broad sense heritability. Genotypic data of this population was developed using 161 SSR markers. A total of 5 QTLs were identified on chromosome 1, 3, 6, 9 and 12. QTL present on chromosome 9 had major effect with LOD value of 9.53 and located between HvSSR 9-7 to HvSSR 9-19. These QTLs will be helpful to facilitate the development of novel cold tolerant cultivars using molecular breeding. © 2014, Indian Agricultural Research Institute. All rights reserved.

Rice is the main staple food crop and is grown in the entire land situation (upland, midland, lowland) with high water and input cost at Mahasamund district. The study was conducted to identify the cost and returns in production of paddy crop considering main product and bi-product values by understanding the impact of agro advisory services under AICRPAM-NICRA project driven by Department of Agrometeorology, IGKV. Two hundred thirty (230) farmers were selected randomly from two purposely selected villages namely Malideh and Jhalkhamriya where the project is in operation. The growers were classified as marginal (up to 1 ha), small (up to 2 ha), medium (2.01-4 ha) and large (above 4 ha) categories. The details enquiry was done in the kharif season 2013. It was observed that cost of cultivation comes down by 8.2 per cent by the farmers who follow AAS. Net cost: benefit ratio of AAS and non AAS farmers was found 1.21 and 0.98 respectively. © 2015, India Meteorological Department. All rights reserved.

Sinha S.,IGKV | Verulkar S.B.,IGKV | Kotasthane A.S.,IGKV
Indian Journal of Genetics and Plant Breeding | Year: 2015

In present study, quantitative trait loci (QTL) analysis was carried out using 93 SSR and 11 SNP markers in F7 recombinant inbred lines derived from a cross between two potential indica genotypes, Danteshwari and Dagad Deshi. Fourteen putative QTLs identified for 7 root and shoot traits on chromosomes 1, 2, 4, 5, 6 and 8, explained 3.77%-29.24% phenotypic variance at LOD score of > 2.5. The number of putative QTLs was 2 for each root volume, root dry weight, shoot length, shoot fresh weight and total plant length, 1 for root/shoot fresh weight ratio and 3 for root/shoot dry weight ratio. Identified putative QTLs for root and shoot traits in this study provide insight into the mode of drought tolerance, which will accelerate the rice molecular breeding. © 2015, Indian Society of Genetics and Plant Breeding. All rights reserved.

Fourty eight divergent genotypes of linseed were studied for genetic variability, heritability and genetic advance during rabi 2011-12. The highest magnitude of genotypic variation was observed for seed yield per plant. High heritability coupled with high genetic advance was observed for seed yield per plant and number of capsule per plant. Number of capsule per plant, number of secondary branches per plant, number of primary branches per plant and 1000 seed weight had positive association with seed yield per plant. Number of capsule per plant showed high positive direct effects on seed yield per plant.

Loading IGKV collaborators
Loading IGKV collaborators