Investigation of agronomic characteristics and yield stability of some medium-late maturing potato genotypes

Document Type : Research Paper


1 Assistant of Seed and Plant Certification and Registration Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran

2 Associate professor of Seed and Plant Certification and Registration Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran

3 Researcher of Seed and Plant Certification and Registration Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran


Potatoes play an important role in ensuring food security in Iran and many other countries due to their high yield potential.. There is a vast need for cultivars adapted and stable to Iran’s weather conditions so that evaluation of yield stability and adaptation experiments is vital. In this study, nine medium-late maturities imported genotypes along with one medium-late maturity control genotype, were cultivated in RCBD with three replications in three important cultivation sites (Khorasan Razavi, Zanjan, and Hamedan) in two years (2016, 2017). Then traits of tuber yield, marketable tuber yield, number of the main stem in a plant, plant height, number of seed tuber, total number of tuber, and finally dried matter percentage were assessed. Results showed significant differences between cultivars in different places. It was concluded by the analysis of variance (ANOVA)results that the effect of year × place × genotype has a significant difference for all evaluated traits except plant height and dried matter percentage. The Rodeo, Sifra, Fabula, Panamera, and Sagitta were selected for spring cultivation as best genotypes and Challenger genotype was suggested to be sowed by the aim of consumption in the industrial. In general, the most adapted genotypes with the highest yield tuber were Rodeo genotypes for Khorasan Razavi, Sifra, and Fabula genotypes for Zanjan, and Panamera, and Sagitta genotypes for Hamedan. 


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