GGE biplot analysis in finger millet [Eleusine coracana (L.) Gaertn.] genotypes across agro-climatic zones of Andhra Pradesh

Abstract

The main focus of the study is to identify promising finger millet genotypes with yield stability and adaptability for wide range of environments as well as to identify ideal mega-environments using genotype plus genotype and environment interaction (GGE) biplot method. Grain yield of finger millet genotypes were remarkably influenced by environment (E), genotypes (G) and their interaction (G x E). The genotype and environment interaction was significant though comparatively less than location and genotype effects. The study has spotted the best varieties suitable for cultivation across five zones of finger millet growing areas of Andhra Pradesh. The cultivar PPR-1152 is recognized as the perfect genotype as it showed higher grain yield and stability compared with other cultivars in all places. Among locations Vizianagaram was the best discriminative and better representative location than other locations and perfect testing site for choosing finger millet cultivars effectively for adaptation in Andhra Pradesh.

Keywords

• finger millet
• gge biplot analysis
• multi-location testing
• yield stability.