Grain Yield Stability of Rice Genotypes

Authors

  • Jiban Shrestha Nepal Agricultural Research Council, Agriculture Botany Division, Khumaltar, Lalitpur, Nepal
  • Ujjawal Kumar Singh Kushwaha Nepal Agricultural Research Council, Agriculture Botany Division, Khumaltar, Lalitpur, Nepal
  • Bidhya Maharjan Nepal Agricultural Research Council, Agriculture Botany Division, Khumaltar, Lalitpur, Nepal
  • Manoj Kandel Hill Crops Research Program, Kabre, Dolakha, Nepal
  • Suk Bahadur Gurung Hill Crops Research Program, Kabre, Dolakha, Nepal
  • Amrit Prasad Poudel Agricultural Research Station, Pakhribas, Dhankuta, Nepal
  • Manoj Kumar Lal Karna Agricultural Research Station, Pakhribas, Dhankuta, Nepal
  • Ramesh Acharya Regional Agricultural Research Station, Lumle, Kaski, Nepal

DOI:

https://doi.org/10.32734/injar.v3i2.3868

Keywords:

environment, grain yield, Nepal, rice, stability

Abstract

Stability analysis identifies the adaptation of a crop genotype in different environments. The objective of this study was to evaluate promising rice genotypes for yield stability at different mid-hill environments of Nepal. The multilocation trials were conducted in 2017 and 2018 at three locations viz Lumle, Kaski; Pakhribas, Dhankuta; and Kabre, Dolakha. Seven rice genotypes namely NR11115-B-B-31-3, NR11139-B-B-B-13-3, NR10676-B-5-3, NR11011-B-B-B-B-29, NR11105-B-B-27, 08FAN10, and Khumal-4 were evaluated in each location. The experiment was laid out in a randomized complete block design with three replications. The rice genotype NR10676-B-5-3 produced the highest grain yield (6.72 t/ha) among all genotypes. The growing environmental factors (climate and soil conditions) affect the grain yield performance of rice genotypes. The variation in climatic factors greatly contributed to the variation in grain yield. Polygon view of genotypic main effect plus genotype-by-environment interaction (GGE) biplot showed that the genotypes NR10676-B-53 and NR11105-B-B-27 were suitable for Lumle; NR11115-B-B-31-3 and NR11139-B-B-B-13-3 for Pakhribas; and 08FAN10 and NR11011-B-B-B-B-29 for Kabre. The GGE biplot showed that genotype NR10676-B-5-3 was stable hence it was near to the point of ideal genotype. This study suggests that NR10676-B-5-3 can be grown for higher grain yield production in mid-hills of Nepal.

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Published

2020-07-24

How to Cite

Shrestha, J., Kushwaha, U. K. S., Maharjan, B., Kandel, M., Gurung, S. B., Poudel, A. P., Karna, M. K. L., & Acharya, R. (2020). Grain Yield Stability of Rice Genotypes. Indonesian Journal of Agricultural Research, 3(2), 116 - 126. https://doi.org/10.32734/injar.v3i2.3868