Time filter

Source Type

Raipur, India

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. Source

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. Source

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. Source

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. Source

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. Source

Discover hidden collaborations