Browsing by Author "POORNIMA, R. N."
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ThesisItem Open Access IDENTIFICATION OF STABLE HIGH YIELDING MAIZE (Zea mays L.) SINGLE CROSS HYBRID(S)(UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU, 2016-09-03) POORNIMA, R. N.; GANGAPPA, EAn investigation was undertaken on 15 single cross hybrids of maize to assess the hybrid × location interaction and to identify the stable high yielding single cross hybrid(s) across three locations viz., GKVK, University of Agricultural Sciences, Bengaluru, Zonal Agricultural Research Station (ZARS), Mandya and Agricultural Research Station (ARS), Chintamani during kharif, 2015. The study compared the effectiveness of the Eberhart and Russell regression analysis and Additive Main Effects and Multiplicative Interaction (AMMI) model, the two stability analysis approaches that are widely used to identify high yielding and stable genotypes/hybrids. The results revealed significant hybrid × location interaction for days to 50 per cent tasseling, days to 50 per cent silking, anthesis-silking interval (ASI) and plant height indicating differential performance of maize hybrids across three locations. On the basis of Eberhart and Russel stability parameters and AMMI biplot analysis, the hybrids DMRN 21 × CML 411, CML 338 × HKI-34(H2)-1, MAI-729 × MAI-264, MAI-729 × MAI-105 and MAI-726 × MAI-105 were identified as widely adaptable high yielding hybrids across three locations. The hybrids MAI-729 × MAI-105 at GKVK, Bengaluru and ZARS, Mandya and MAI-729 × MAI-264 at ARS, Chintamani, were identified as location-specific superior hybrids and the hybrid CML 338 × HKI-34(H2)-1 was identified as widely adaptable hybrid for both high yield and narrow ASI. The results from this study indicated that, compared to Eberhart and Russel model AMMI biplot facilitated convenient way of visualizing patterns of interactions of hybrids with location and identifying those which are specifically/widely adapted.