growth characteristics, yield, and fruit quality of the asian pear genotypes (pyrus serotina rehd.) in climatic conditions of isfahan- iran

Purpose: selection and evaluation of imported cultivars is one of themain programs for the breeding of fruit trees, including pears.comparison of quantitative and qualitative traits of importedcultivars and genotypes with available cultivars of each region isnecessary to obtain superior cultivars and introduce them toproducers. research method: in this study, the growth and yield of10 introduced asian pear genotypes named ks6, ks7, ks8, ks9, ks10,ks12, ks13 and ks14 along with two european pear cultivars named'shahmiveh' and 'spadona' as controls grafting on 'dargazi' seedlingrootstock were studied during five years (2015-2019) in the climaticconditions of isfahan (iran). findings: the highest rootstock,grafting, and scion diameter as well as the highest tree height wereobserved in 'shahmiveh' and 'espadona' cultivars. ks8 and ks9 hadthe lowest rootstock and grafting diameter and ks10 showed thelowest scion diameter and tree height. two european pear cultivars,'shahmiveh' and 'espadona', had lower yield and yield efficiencythan asian genotypes. the highest yield and yield efficiencybelonged to ks13 and ks8, respectively. 'shahmiveh' and ks9 hadthe highest and lowest fruit dimensions, respectively. europeancultivars had higher tss than asian genotypes. the highest and thelowest fruit firmness were observed in ks13 and 'shahmiveh',respectively. research limitations: no limitations were found.originality/value: in general, ks13 and ks8 are recommended forcultivation and expansion in the climatic conditions of isfahan dueto their good yield and taste index.