AUTHOR=Bomma Naresh , Shruthi H. B. , Soregaon Chandrakant D. , Gaddameedi Anil , Suma Krishnappa , Pranati Jwala , Chandappa Lohithaswa H. , Patil D. K. , Kumar Niraj , Sandeep S. , Vemula Anilkumar , Gangashetty Prakash I. 

TITLE=Multi-environment testing for G×E interactions and identification of high-yielding, stable, medium-duration pigeonpea genotypes employing AMMI, GGE biplot, and YREM analyses

JOURNAL=Frontiers in Plant Science

VOLUME=Volume 15 - 2024

YEAR=2024

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2024.1396826

DOI=10.3389/fpls.2024.1396826

ISSN=1664-462X

ABSTRACT=Pigeonpea [Cajanus cajan (L.) Millspaugh] is a widely grown pulse with high seed protein content that contributes to food and nutritional security in the Indian subcontinent. The majority of pigeonpea varieties cultivated in India are of medium duration (<180 days to maturity) which makes it essential for breeders to focus on the development of stable high-yielding varieties.The diverse agroecological regime in the Indian subcontinent necessitates an efficient multienvironment study by taking into consideration genotype (G) × environment (E) interaction (GEI) that has a significant impact on traits like grain yield (GY) in developing high-yielding and widely adaptable varieties. In the present study, thirty-seven pigeonpea genotypes were evaluated during the 2021 rainy season at ARS Badnapur, ARS Tandur, BAU Ranchi, GKVK Bengaluru, and ICRISAT Patancheru. The GEI was significant on the grain yield (P < 0.01) and hence GGE (genotype + environment) and AMMI (Additive Main and Multiplicative Interaction effects) biplots along with AMMI stability value Stability Index (ASV) and YREM (Yield Relative to the Environment Maximum) statistics were used to identify stable high yielding genotypes. The Interaction Principal Component Analysis 1 and 2 (IPC1 and IPC2) explained 40.6% and 23.3% variations, respectively. Based on the rankings of genotypes G37 (ICPL 20205), G35 (ICPL 20203), G8 (ICPL 19404), G17 (ICPL 19415), and G9 (ICPL   19405)  were identified as ideal genotypes. Discriminativeness vs. representativeness identified GKVK Bengaluru as an ideal environment for comprehensive evaluation of test genotypes. However, ICPL 19405 was identified as the potentially stable high-yielding genotype for further testing and release across the test environments based on its mean grain yield (1469.30kg ha -1 ), least ASV (3.82) and low yield stability Index (YSI) of 13.