AMMI Analysis of Yield Performance in Foxtail Millet [Setaria italica (L.) P. Beauv.] Genotypes for Adaptation to Rainfed Conditions in Andhra Pradesh

Abstract

Background: Foxtail millet is a short duration crop which is suitable for different cropping systems in rainfed farming. Improvement of yields is necessary to achieve profits in rainfed situation which is highly influenced by the high yielding varieties. Genotype by environment interaction (G×E) causes genotypes failure to keep high performance in all environments. Location specific climatic conditions also influence significantly genotype × environment (G×E) interaction, so with the result that identifying stable genotypes for rainfed situations is difficult. The study was conducted with a prime objective to identify stable high yielding foxtail millet genotypes for rainfed cultivation and to identify ideal mega-environments using additive main effects and multiplicative interaction stability model analysis. Methods: Four prerelease promising foxtail millet genotypes including three released popular check varieties were evaluated across six locations in Andhra Pradesh during Kharif, 2018 under rainfed situation. Result: The culture, SiA 3159 was found to be stable performer across the locations indicating that it is suitable for wide range of environments. In contrast the genotypes SiA 3085 and SiA 3156 showed narrow adaptation, specifically adapted to Anantapur (rainfed situation having scarce rainfall) and Vizianagaram (favorable environments with assured rainfall areas) respectively.

Stability Analyses for Yield and Its Components in Little Millet (Panicum sumatrense L.)

“…Significant genotype x environment interaction for all the traits indicated differential response of the genotypes for the traits in different locations. The results were in accordance with KebedeDesselegn et al, [11] and Madhavilatha et al, [3] in finger millet, Kandelet al, 2020 in foxtail millet and Selvi and NirmalaKumari, [2] in little millet. The mean performance of the eleven little millet genotypes and environmental indices in three locations for yield and yield components were presented in Table 2.…”

“…Andhra Pradesh state has a wide environmental variability which can lead to high genotype environment interaction. Wide environmental variability in the state suggested the importance of multi-location testing in varietal development process for identifying high yielding varieties with wide adaptation" [3]. "Enhancing the productivity levels by developing and identifying high yielding varieties which can fit in wide range of environments is essential in little millet" [4].…”

“…"Development of high yielding varieties has always been the prime objective of plant breeders especially those who do research on neglected crops" [5]. "Although research on the development of high yielding varieties has led to release of large number of new varieties in different crops, genotype by environment interaction (G×E) causes failure of genotypes to keep high performance in all environments" [6].…”

Genotype×Environment Interaction and Stability Analysis for Quality Parameters in Little Millet (Panicum sumatrense L.)

“…Patel et al ( 2019) noted significant G×E interaction for yield and quality traits in pearl millet. Madhavilatha et al (2020) reported among the tested genotypes that PR-1041 recorded average stability for grain yield indicated the wide adoptability of this genotype for important traits.Also, found out significant G×E interaction for grain yield plant -1 . Kandel et al (2020) reported that the genotype CO-4656 had mean yield which was higher than the overall mean (0.429 t ha -1 ), parameter of response (b)=1.16 and parameter of stability (S 2 d i )=0.05.…”

“…Madhavilatha et al (2020) reported average stability for grain yield was found in VR 990 which revealed the wide adaptability of the genotype across different locations Kandel et al (2022). studied genotypes viz., GE-0382, KLE-216, NE-94 and KLE-559 that were found environmentally sensitive producing higher grain yield throughout the environments.Patel et al (…”