Additive main effects and multiplicative interaction for grain yield of rice genotypes for general and specific adaptation to salt stress locations

SL Krishnamurthy; B. M Lokeshkumar; Suman Rathor; A S Warraich; N.M Vinaykumar; PC Sharma

Just Accepted

This article has been peer reviewed and accepted for publication. It is in production and has not been edited, so may differ from the final published form.

Additive main effects and multiplicative interaction for grain yield of rice genotypes for general and specific adaptation to salt stress locations

SL Krishnamurthy , B. M Lokeshkumar, Suman Rathor, A S Warraich, N.M Vinaykumar, PC Sharma

Abstract

Context. Salt stress is one of the major, ever-increasing abiotic stresses, which is hindering rice production across precious arable land around the world. In order to sustain the production of rice in these salt-affected areas, high-yielding stable salt tolerant genotypes must be identified. Aims and methods. In the present study, the additive main effects and multiplicative interaction (AMMI) model was carried out to identify high-yielding stable rice genotypes under both saline and alkali stress. Nineteen promising rice genotypes including five standard checks were evaluated using randomized block design under nine salt stress environments using three replications for two consecutive years. Key results. The AMMI model II is thought to be the best model for genotype identification based on prediction accuracy with high GEIS and low GEIN (genotype and environment interaction noise). According to AMMI model II six winning genotypes were identified namely CSR RIL-01-IR 165 (GN10) won in three environments, CSR 2711-17 (GN01) won in two environments, and the remaining four genotypes RP5989-2-4-8-15-139-62-6-9 (GN14), RP 6188-GSR IR1-8-S6-S3-S1 (GN12), RP6189-HHZ17-Y16-Y3-SAL1(GN8) and one check (CHK2) were won in single environments. Conclusions. Based on AMMI stability study, the genotypes RP5989-2-4-8-15-139-62-6-9 (GN14), CSR2711-17 (GN01), CSR RIL-01-IR 165 (GN10), CSR-2748-4441-195 (GN05), CSR-2748-4441-193 (GN11), and CSRRIL-01-IR 75 (GN03) were determined to be higher yielding and stable than the national check CHK2 (CSR23). Implications. The high-yielding stable genotypes identified in the present study could be promoted for salt-affected areas to sustain the production of rice.

CP23219 Accepted 16 November 2024