Published in Scientific Papers. Series B, Horticulture, Vol. LXVIV, Issue 1
Written by Corneliu IACOB, Sorin CIULCA
In the context of climate change, the achievement of economically efficient yields largely depends on the cultivar’s stability. A snap bean variety is considered more stable if it achieves a high green pod yield with a low variation of mean yield over diverse environments. The study was carried out to identify snap bean varieties that have high and stable yield across different years, to be used in breeding and sustainable production of this species. The plant material was composed of 20 varieties of bushing snap bean, genetically and ecologically differentiated. The varieties were evaluated for their green pod yield over three years using a randomized block design with three replications. To assess the performance of the varieties, a combined analysis of variance and yield stability statistics were determined. 'Sondella’, ʻPlador’, ʻDoge’ and 'Maxidor’ varieties, with relatively high pod yield expressed a good stability and can be used to develop new diverse cultivars with stable yields. 'Super Nano Yellow’ variety expressed the highest sensitivity to the change of climatic conditions, being specific adapted to favorable conditions.
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