Phenological Assessments of Selected Wheat Genotypes in Different Agro-Environment
Phenological Assessments of Selected Wheat Genotypes in Different Agro-Environment
Rabia Goher, Inamullah and Mohammad Akmal*
ABSTRACT
Despite the genetic potential, the yield performance of a genotype is expressed in the prevailing environments. A high yielding genotype may not necessarily reflect its potential performance when subjected to a different Agro-Environment (AE). This study, therefore, aimed to assess the foremost developmental stages of the selected genotypes of wheat in three AE i.e. AEP (Peshawar), AEK (Kashmir) and AEC (Chitral). An experiment was conducted in a randomized complete block, having 3 replications. Four cultivars (i.e. Pirsabak-2005, Pakhtunkhwa-2015, Pakistan-2013 and DN-84) along with three advanced lines (i.e. P-2, P-12 and P-18) were compared for the crop growth seasons (i.e. 2017-18 and 2018-19). Averaged across genotypes, days to emergence, heading, anthesis, and maturity did differ (p<0.05) in various AE, with highest in higher altitudes and lowest in the plains area. Genotypes differed in crop developmental stages with mild to marked effects on tiller height, spike length, spike weight and unit grain weight, which has resulted in significant changes (p<0.05) for biomass and grain yield. Harvest indices did differ for AE among genotypes. Based on the experimental results, it is concluded that a genotype may not necessarily perform similar in production with changing the AE. However, with a close association of the crop developmental stages, more than one genotype can be recommended to perform good within different AE to adress future food security. Moreover, expressing suitable traits, a genotype could be used as a source of well breeding material for ensuring food security in changing climate.
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