Abstract
Ten chilli (Capsicum frutescens L.) genotypes were subjected to an experiment for analysis of stability and genotype-environment interaction in randomized complete block design with four environments using additive main effect and multiplicative interaction (AMMI) model. Parameters for experimentation were number of fruits per plant, fruit diameter, leaf area index, fruit length without panicle, number of seeds per fruit and individual plant fruit yield. A significant mean sum of square due to Genotype (G), Environment (E) and G × E interaction for all the characters was showed by combined ANOVA, suggested differential responses of genotypes in different environments. The AMMI biplots for yield indicated that, BD-2059 and Bogura Jatt were stable across the environments. Genotype Kalo Dhawna morich had positive interaction effect was better suited to favourable environment for most of the traits. According to AMMI characterisation, Env-2 was found highly favourable for better expression of the studied traits for all the genotypes.
Highlights
Chili is an important vegetable-cum-spice crop worldwide
Stability is a genetic character of varieties which can be measured by determining interactions of varieties with locations, seasons (Tehlan, 1973) and different fertilizer rates (Gonsalves et al, 2009; Ma et al, 2004)
The experiment was scheduled in the randomized complete block design (RCBD) consisting three replications
Summary
Chili is an important vegetable-cum-spice crop worldwide. It is an important cash crop of Bangladesh too (Ahmed and Haque, 1980). BARI has released only two varieties of chili, of which BARI Morich-1 is suitable for greater northern districts and other is only for the kharif season (Krishi Projukti Hatboi, 2015). Those can be seen minor in the farmer’s field since they show less productivity in the variable environment like southern region (Sultana, 2007). Stability is a genetic character of varieties which can be measured by determining interactions of varieties with locations, seasons (Tehlan, 1973) and different fertilizer rates (Gonsalves et al, 2009; Ma et al, 2004). Encouraged by the above view, this study was undertaken to identify high yielder genotypes and to find out the most suitable fertilizer dose for chili to be adapted
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