Evaluation of Maize (Zea mays L.) Germplasm for Yield and Related Traits in Mid Hills of Himachal Pradesh

Registration ID: IJNRD_313395

Published ID: IJNRD2603277

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Riya Thakur

genetic variability, heritability, genetic advance, correlation, path coefficient, cluster analysis, grain yield.

Maize (Zea mays L.) productivity in mid-hill agroecosystems is frequently constrained by suboptimal genotype–environment interactions. This study evaluated genetic variability and identified promising germplasm among 51 diverse maize accessions under mid-hill conditions of Himachal Pradesh, India. Field trials were conducted during the Kharif 2024 season at Chamelti Farm, Shoolini University, using a randomized complete block design with three replications. Eleven agronomic and phenological traits including plant height, cob height, cob girth, cob weight, leaf count per plant, cob count per plant, days to anthesis, days to silking, anthesis–silking interval, leaf area, grain yield per plant, and shelling percentage were recorded. Analysis of variance revealed highly significant genotypic differences across all traits, indicating substantial genetic diversity. The highest genotypic and phenotypic coefficients of variation were observed for cob weight, grain yield per plant, and leaf area, suggesting strong additive genetic control. Grain yield per plant exhibited moderate-to-high heritability (55%) and high genetic advance (185.06 g), affirming its potential as a reliable selection index. Correlation and path coefficient analyses identified cob weight and cob girth as the most influential traits contributing positively to grain yield, while leaf count per plant and anthesis–silking interval exerted negative direct effects. Cluster analysis grouped the accessions into ten genetically distinct clusters, with clusters 4 and 7 exhibiting maximum inter-cluster divergence, thereby representing ideal candidates for hybridization to exploit heterosis.

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Riya Thakur (March-2026). Evaluation of Maize (Zea mays L.) Germplasm for Yield and Related Traits in Mid Hills of Himachal Pradesh. INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT, 11(3), c722-c730. https://ijnrd.org/papers/IJNRD2603277.pdf

Volume 11 Issue 3, March-2026

Pages : c722-c730

Paper Reg. ID: IJNRD_313395

Published Paper Id: IJNRD2603277

Research Area: Other area not in list

Author Type: Indian Author

Country: Shimla, Himachal Pradesh, India

Published Paper PDF: https://ijnrd.org/papers/IJNRD2603277.pdf

Published Paper URL: https://ijnrd.org/viewpaperforall?paper=IJNRD2603277

Journal Name: INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT(IJNRD)

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