Grain Yield Stability of Rice Genotypes

Indonesian Journal of Agricultural Research

Manoj Kumar Lal Karna¹  Amrit Prasad Poudel¹  Manoj Kandel²  Suk Bahadur Gurung²  Bidhya Maharjan³  Jiban Shrestha³  Ujjawal Kumar Singh Kushwaha³  Ramesh Acharya⁴ 

[1] Agricultural Research Station, Pakhribas, Dhankuta, Nepal;Hill Crops Research Program, Kabre, Dolakha, Nepal;Nepal Agricultural Research Council, Agriculture Botany Division, Khumaltar, Lalitpur, Nepal;Regional Agricultural Research Station, Lumle, Kaski, Nepal;

关键词: environment;    grain yield;    nepal;    rice;    stability;   

DOI  :  10.32734/injar.v3i2.3868

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown