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NEW BOTANIST - International Journal of Plant Science Research
Year : 2006, Volume : 33, Issue : 1–4
First page : ( 91) Last page : ( 98)
Print ISSN : 0377-1741.

Studies on inter relationship and path analysis for yield improvement in sweet corn genotypes (Zea mays L.)

Prakash Om, Shanthi P., Satyanarayana E., Kumar R. Sai

Directorate of Maize Research, IARI, New Delhi-110012.

Agricultural Research Station (Maize), Amberpet, Hyderabad-500013, AP. INDIA

Abstract

Eighty one sweet corn genotypes were studied for their genotypic correlations and path coefficients at Agricultural Research Station (Maize), Amberpet, Hyderabad. The experiment was laid out in simple lattice design with three replications. Correlation studies indicated that sweet corn yield was significantly and positively associated with 100-seed weight, protein percent, ear length and no. of seeds per row. Path Co-efficient analysis revealed the importance of 100-seed weight, protein percent, days to 50% tassel ling & ear length since they exhibited high magnitudes of positive direct effects on sweet corn grain yields. In brief present results suggested that, the genotypes should be selected on per se basis, for higher values of 100 seed weight, protein percent and ear length with moderate levels of sugar percent and early maturity to improve the grain yields in sweet corn before initiating elite line selection and heterosis breeding programme to develop sweet corn hybrids.

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Keywords

Correlation, Path analysis, Sweetcorn.

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