Sachin B1 SHINDE, Deo Narayan VISHWAKARMA, Amita SHARMA, Dhairyashil M. LANGADE

INHERITANCE OF FODDER AND YIELD TRAITS IN OAT (Avena sativa L.)

Combining ability analysis for various fodder traits was performed in oat (Avena sativa L.) through Line x Tester analysis during Rabi 2008 involving nine lines, four testers and their thirty-six F1 hybrids laid out in a Randomized Complete Block Design with three replications. Observations were recorded for eleven characters. The analysis of variance for treatment, parent and crosses were highly significant for all the characters indicating presence of considerable variability. Percentages of phenotypic and genotypic coefficient of variation were of dissimilar magnitude for all the traits, except for leaf: stem ratio indicating least effect of environmental factors in their expression. The estimate of heritability in broad sense (h2b) was higher ( > 75%) for all the characters except panicle length. The heritability in narrow sense (h2n) was low ( < 10%) for all the characters indicating preponderance of non-additive gene action and suggesting that heterosis breeding may be useful in such a case. Among male parents, Kent was the best general combiner for maximum characters, except for days to 50% flowering, leaf: stem ratio, 1000 grain weight and harvest index. Among female parental lines, NDO-14 was the best general combiner for six characters. Hybrids viz., NDO-14 x UPO-212, NDO-22 x JHO-851, NDO-22 x UPO-212, NDO-42 x UPO-212, NDO-59 x JHO-851, NDO-59 x UPO-212 and LC-4 x UPO-212 exhibited significant heterobeltiosis for yield and component traits

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Bedis, M.R. and F.B. Patil. 1996. Variability in forage oats. J. of Maharashtra Agric. Univer. 21(3): 462-464.
Choubey, R.N., S.V.S. Prasad and A.K. Roy. 2001. Study on variability, association and path analysis in forage oat. Range Management and Agroforestry. 22(2):188-192.
Fonseca, S. and F.L. Patterson. 1968. Hybrid vigour in seven parent diallel cross in common wheat (Triticum aestivum L.). Crop Sci. 8:85-88.
Griffing, B. 1956. Concept of general and specific combining ability in relation to diallel crossing systems. Australian J Biol Sci. 9:463-493.
Gupta, S., R. Srishna and Z. Ahmad. 2001. Estimating gene effects for grain attributes in oat (Avena sativa L.) by different diallel models tested over environments. J of Genetics and Plant Breeding. 55(1):17-20.
Gupta, S., R. Krishna and Z. Ahmad. 2002. Analysis of adaptability for fodder yield, quality and physiological attributes in oats (Avena sativa L.). Cereal Research Communications. 30(2): 165-172.
Hanson, G.H., H.F. Robinson and R.E. Comstock. 1956. Biometric studies of yield in segregating population of Korean lespedeza. Agron J. 48:476-490.
Johnson, H.W., H.F. Robinson and F. Comstock. 1955.
Genotypic and phenotypic correlation in soybean and their implications in selection. Agron J. 47:477-483.
Kempthorne, O. 1957. An Introduction to Genetic Statistics, John Willey and Sons Inc. New York U.S.A.
Kempthorne, O. and R.N. Curnow. 1961. The Partial Diallel Cross. Biometrics. 17:229-250.
Pal, K. and S.N. Mishra. 1992. Genetic variability and correlation coefficients relating to grain yield and other quantitative characters in oats (Avena sativa L.). Advances in Plant Sci. 5(1):6-11.
Machan, F. 1989. Evaluation of combining ability of Oat varieties. Scientia-Agriculturae-Bohemoslovaca. 21(2):91- 97.
Mall, A.K., D.N. Vishwakarma and S. Akhtar. 2005. Studies on genetic variability, heritability and genetic advances in Oat (Avena sativa L.). Journal of Living World. 12(2):18-21.
Panse, V.G. and P.V. Sukhatme. 1967. Statistical Method for Agricultural Workers. ICAR Pub New Delhi.
Pixley, K.V. and K.J. Frey. 1991. Inheritance of test weight and its relationship with grain yield for Oat. Crop Sci. 31(1):36- 40.
Prajapati, A.S., S.R. Vishwakarma, D.N. Vishwakarma and H.P. Singh. 2009a. Expression of heterosis for forage and grain yield in oat. Range Mgt and Agroforestry. 30(1):49-53.
Prajapati A.S., S.R. Vishwakarma, D.N. Vishwakarma and H.P. Singh. 2009b. Combining ability analysis in intervarietal crosses of oat. Range Mgt and Agroforestry. 30(1):163-166.
Pundir, S.R., D. Yogya and R.P.S. Grewal. 2003. Genetic variability for forage characters in Oat (Avena sativa L.). Forage Research. 28(4):288-229.
Robinson, H.F., R.E. Comstock and P.H. Harvey. 1949. Genotypic and phenotypic correlation in corn, their importance in selection. Agron J. 43:282-287.
Salgotra, R.K., B.B. Gupta and P. Singh. 2009. Combining ability studies for yield and yield components in Basmati rice. Oryza. 46(1):12-16.
Shankar, S., P.B. Jha, J. Ghosh and R.B.P. Nirala. 2002. Variation and association studies in Oat (Avena sativa L.). Forage Research. 28(2):110-112.
Singh, J.M. 1999. Variability, heritability and genetic advance in oat (Avena sativa L.). Environment and Ecology. 17(4):1011-1012.
Smialowski, T., S. Wegrzyn and Z. Nita. 1999. Combining ability of oat varieties and strains on the basis of evaluation of some traits. Biuletyn-Instytutu-Hodowli-i-Aklimatyzacjin. 210:53-59.
Smialowski, T. and S. Wegrzyn. 2004. Combining ability of the strains and varieties of Oats. Part II Yellow grain Oats. Plant Breeding Abstracts. 74(7):1177.
Sprague, G.F. and D.A. Tatum. 1942. General and specific combining ability in single crosses of corn. J Amer Soc Agron. 34:923-932.
Yin, D., R. Qi, D.H. Yin and R.H. Qi. 1994. Analysis of combining abilities of days to heading and grain filling period in Oats. Qinghai-Xumu-Shouyi-Zazhi. 24(2):13-15.