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Correlation Coefficient and Path Analysis of Yield and Yield Attributing Characters of Rice (Oryza Sativa) Genotypes Under Reproductive Drought Stress in the Terai Region of Nepal

Author

Listed:
  • Preeti Kayastha*

    (Tribhuvan University, Institute of Agriculture and Animal Science Paklihawa Campus, Paklihawa, Bhairahawa, Rupandehi, Nepal)

  • Himani Chand

    (Tribhuvan University, Institute of Agriculture and Animal Science Paklihawa Campus, Paklihawa, Bhairahawa, Rupandehi, Nepal)

  • Barsha KC

    (Tribhuvan University, Institute of Agriculture and Animal Science Paklihawa Campus, Paklihawa, Bhairahawa, Rupandehi, Nepal)

  • Biddhya Pandey

    (Tribhuvan University, Institute of Agriculture and Animal Science Paklihawa Campus, Paklihawa, Bhairahawa, Rupandehi, Nepal)

  • Bimal Roka Magar

    (Tribhuvan University, Institute of Agriculture and Animal Science Paklihawa Campus, Paklihawa, Bhairahawa, Rupandehi, Nepal)

  • Janak Bhandari

    (Tribhuvan University, Institute of Agriculture and Animal Science Paklihawa Campus, Paklihawa, Bhairahawa, Rupandehi, Nepal)

  • Pawan Lamichhane

    (Tribhuvan University, Institute of Agriculture and Animal Science Paklihawa Campus, Paklihawa, Bhairahawa, Rupandehi, Nepal)

  • Prakash Baduwal

    (Tribhuvan University, Institute of Agriculture and Animal Science Paklihawa Campus, Paklihawa, Bhairahawa, Rupandehi, Nepal)

  • Mukti Ram Poudel

    (Tribhuvan University, Institute of Agriculture and Animal Science Paklihawa Campus, Paklihawa, Bhairahawa, Rupandehi, Nepal)

Abstract

An experimental trial of nine rice genotypes was conducted in the Agronomy field of the Institute of Agriculture and Animal Science (IAAS) Paklihawa Campus under a randomized block design layout with three replications from July to November of 2022. The aim was to study genetic variability and analyze the character association of yield and yield-attributing components in rice genotypes and their direct and indirect effect on grain yield under reproductive drought stress conditions. Observations on days to flowering (50%), plant height, panicle length, panicle weight, number of grains/panicle, effective panicle/m2, grain yield, and 1000 kernel weight were recorded. Grain yield showed a highly positive significant correlation with effective panicle/m2 (0.713**), followed by plant height (0.347) and panicle length (0.289). The path coefficient analysis of different traits revealed the highest positive direct effect of the effective panicle per m2 (0.748963), followed by panicle length (0.24145) and plant height (0.227505). The highest negative direct effect was shown by the number of grains per panicle (-0.31218). The experimental results revealed that the selection of trait-effective panicle per square meter would be most beneficial for the improvement of yield in rice genotypes facilitating selection and plant breeding programs.

Suggested Citation

  • Preeti Kayastha* & Himani Chand & Barsha KC & Biddhya Pandey & Bimal Roka Magar & Janak Bhandari & Pawan Lamichhane & Prakash Baduwal & Mukti Ram Poudel, 2023. "Correlation Coefficient and Path Analysis of Yield and Yield Attributing Characters of Rice (Oryza Sativa) Genotypes Under Reproductive Drought Stress in the Terai Region of Nepal," Sustainability in Food and Agriculture (SFNA), Zibeline International Publishing, vol. 4(1), pages 28-33, February.
    • Handle: RePEc:zib:zbsfna:v:4:y:2023:i:1:p:28-33
    DOI: 10.26480/sfna.01.2023.28.33
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