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Madhusudhan Reddy, S.
- Genetic Relationship Of Yield Attributing Traits And Late Leaf Spot Tolerance With Pod Yield In BC1F2 Population Of (JL 24 X ICG 11337) X JL 24 Of Groundnut
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International Journal of Innovative Research and Development, Vol 2, No 9 (2013), Pagination:Abstract
An experiment was conducted at the International Crops Research Institute for the Semi Arid Tropics, Patancheru at Hyderabad to study the genetic variability, correlation and path analysis in BC1F 2 of (JL 24 X ICG 11337) X JL 24. High variability was observed for total number of pods per plant, mature seeds per plant, shelling per cent, hundred seed weight, LLS disease score at 75, 90 and 102 DAS and pod yield per plant. High PCV, GCV, heritability and genetic advance as per cent of the men was observed in mature pods per plant, mature seed per plant, immature seeds per plant, hundred seed weight, haulm weight per plant, LLS disease score at 75 DAS and pod yield plant. Whereas, moderate estimates of PCV and GCV with high heritability coupled with high genetic advance as per cent of mean for LLS disease score at 90 and 102 DAS. Low variability and genetic advance as per cent of mean was noticed for days to 50% flowering and days to maturity. In correlation coefficient study pod yield per plant was significantly and positively correlated with mature pods per plant, immature pods per plant, total pods per plant, mature seeds per plant, immature seeds per plant and haulm weight per plant, while it was negative non significant correlation with days to 50% flowering, days to maturity and shelling percent. Path analysis revealed that the maximum positive direct effect on pod yield per plant for mature seeds per plant, total pods per plant and hundred seed weight whereas, negative and maximum direct effect on yield was observed for mature pods per plant, immature pods per plant and shelling per cent.
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Correlation, path analysis, phenotypic variability.- Correlation And Path Coefficient Analysis For Certain Metric Traits In Okra (Abelmoschus Esculentus (L.) Monech) Using Line X Tester Analysis
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International Journal of Innovative Research and Development, Vol 2, No 8 (2013), Pagination:Abstract
The present investigation was conducted to find out the Correlation and Path coefficient effects in okra to identifying the desirable combiners. The experiment comprising 60 hybrids obtain by crossing using 19 parents (four lines viz., Arka Anamika, Arka Abhay, Parbhanikranthi, Varsha uphar and fifteen testers viz., IC-332453, IC-433640, IC-326893, IC-332454, IC-433672, IC-433670, IC-328942, IC-433690, IC-433673, IC-33102 , IC-433695, IC-331067, IC-433675, IC-433645 and IC-331217. The observation was recorded on plant height, days to 50% flowering, days to maturity, the node at which first flower appears, number of branches per plant, number of fruits per plant, length of the fruit, the diameter of the fruit, ten pods weight, fruit yield per plant, fruit yield per hectare, the node at which mosaic disease appears and days of first mosaic symptom appear were worked out through line x tester analysis. All the hybrids along with their parents were grown in a Randomized Block Design (RBD) with three replications at Student farm, college of Horticulture, Acharya N. G. Ranga Agricultural University, Rajendranagar, AndhraPradesh, India during Kharif-2009 and Spring Summer-2010. Results pertaining that, fruit yield per plant showed highly significant positive association with a number of branches per plant and number of fruits per plant at phenotypic and genotypic levels in F1s. The path coefficient analysis was done to determine the direct and indirect effects on fruit yield per plant viz., plant height, days to 50% flowering, days to maturity, the node at which first flower appears, number of branches per plant, number of fruits per plant, length of the fruit, the diameter of the fruit, ten pods weight, the node at which mosaic disease appears and days of first mosaic symptom appear.
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Correlation, Path coefficient, okra- Genetic Divergence In Baby Corn (Zea Mays L.)
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International Journal of Innovative Research and Development, Vol 2, No 8 (2013), Pagination:Abstract
A field experiment was conducted with 80 genotypes in three replications in randomized block design at College Farm, College of Agriculture, ANGRAU, Rajendranagar during Kharif 2011-2012. The data on baby corn yield and other traits were results indicated that the varieties were distributed in eight clusters of which cluster VI had maximum intra- cluster distance (3.09) followed by cluster III (3.01) cluster I (2.99) and cluster V (2.85) and remaining clusters are having minimum cluster distances with the zero. The inter- cluster distance ranged from 2.32 (clusters V and IV) to 9.32 (clusters VII and VI). Among the clusters variations were planted height, ear height, baby corn length, cob weight, number of cobs per plant, cob yield per plant, cob yield and green fodder yield. The contribution of each character towards total genetic diversity. In that out of 13 characters plant height (42.31%), ear height (16.84%), baby corn length (17.22%) and cob yield (7.97) contributed high for divergence.
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Baby corn, clusters, genetic diversity, inter cluster distances- Combining Ability Studies In Okra (Abelmoschus Esculentus (L.) Monech)
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International Journal of Innovative Research and Development, Vol 2, No 8 (2013), Pagination:Abstract
Combining ability effects were estimated for different characters of okra in a line x tester mating design, comprising 60 hybrids produced by crossing 4 lines and 15 testers. Parents and hybrids differ significantly for gca and sca effects, respectively. The hybrids Arka Abhay x IC-433675, Varsha Uphar x IC-433673, Arka anamika x IC-328942, Arka Anamika x IC-433670, Parbhani Kranthi x IC-433645 and Varsha Uphar x IC-332454 for fruit yield and most of its component traits.Keywords
combining ability, okra- Genetic Variability Parameters For Yield Components And Late Leaf Spot Tolerance In BC1F2 Population Of Groundnut (Arachis Hypogeaea L.)
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International Journal of Innovative Research and Development, Vol 2, No 8 (2013), Pagination:Abstract
BC1F2 population of four crosses was evaluated to assess their genetic parameters. A wide range of variation was observed for the eight traits. High magnitude of PCV and GCV coupled with broadsense heritability and genetic advance as per cent of mean for these characters studied such as mature pods per plant, immature pods per plant, total pods per plant, mature seeds per plant, immature seeds per plant, haulm weight per plant, LLS disease score at 75 DAS and pod yield per plant in all the populations, whereas the direct crosses recorded high heritability coupled with high genetic advance as per cent of mean for LLS disease score at 90 DAS. So the selection may be effective for this trait in these populations. Most of the characters had low value of GCV as compared to the PCV indicating the scope for further genetic improvement. Owing to presence of wide variability, there is scope for yield improvement in these crosses.