Stability Analysis for Fruit Yield and its Components in Tomato (Solanum lycopersicum L.) under Acidic Soils of Manipur Valley

Abstract

High yielding varieties that have inherent stability in performance over different agroecological conditions are of great significance in countries like India towards sustainable production and productivity. The phenotypic performance of a genotype is not necessarily the same under diverse agro-ecological conditions. Some genotypes may perform well in some environments but not so well in others. Such genotype and environment (Gx E) interactions have assumed greater importance in Plant Breeding as they affect stability of genotypes under diverse environments. Once the G x E interactions were found to be significant, the next task is to identify stable genotypes. The stable genotypes are one which interact less with the environments giving a near consistent performance across different environments (Finlay and Wilkinson, 1963). A variety is said to be stable when regression coefficient (b) is equal to one and deviation from regression (S 2 d) as close to zero as possible with high mean performance (Eberhart and Russell, 1966). Allard and Bradshaw (1964) suggested selection of stable genotypes that interact less with environments in which they are to be grown with a view to reduce the genotype x environment interaction to a considerable extent. The above three International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 10 Number 01 (2021) Journal homepage: http://www.ijcmas.com