Journal of FARM SCIENCES, Vol 21, No 2 (2008)

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Genotype Environment Interaction Effect on Seed Yield and its Component Characters in White Ragi (Eleusine coracana Gaertn)

Sharathbabu K. Sonad, G. ShanthaKumar, P.M. Salimath

Abstract


In finger millet among brown and white grain types, white grain types are preferred because of high protein, low fibre, low tannins and consumer acceptability. However, the yield potentiality of white grain types are generally lower than browns. Obviously, one of the breeding objectives has been to find out stable high yielding genotypes among white grain types. Hence, the stability analysis was carriedout with respect to ten traits over nineteen white finger millet genotypes along with three checks during Kharif 2004 across three locations viz., Agricultural Research Station (ARS), Hanumanamatti ; ARS, Devihosur and Main Agricultural Research Station, Dharwad for identifying high yielding stable white ragi genotypes. The variance for genotypes and environment was significant indicating differences among the genotypes over  environments. Genotype x  environment interaction was significant suggesting that genotypes interacted significantly with the environments. The difference in stability was due to both the linear response of genotypes to environment and deviation from the linear response. None of the genotype was stable for all the characters and stability for one character was independent of stability for other characters. The genotypes IE 2303 and IE 2835 were found to possess better yield potential with superiority  for most of the characters. These white ragi genotypes can be grown as alternative to brown ragi in Karnataka.

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