Antibiosis Resistance of Plum Cultivars and Genotypes to the Plum Moth Grapholita funebrana

Grapholita funebrana is one of the most dangerous pests in plum cultivation. To carry out this project, ۲۶ promising plum cultivars and genotypes were used. Antibiosis indicators including Antibiosis index (ABI), Larval Population Growth Rate (MRCR) and Population Age Structure Index (PASI) were calculated. The quantitative and qualitative characteristics of plum germplasms were examined in laboratory conditions. Separate genotypes as a function of the degree of susceptibility to plum fruit moth, the cluster analysis method was used. The effect of the different fruit characteristics on the antibiosis resistance index was done by analyzing the correlation. ABI and MRCR had the large positive and the negative values, respectively. The plum germplasms includes Zojelo, Gholaman, Gr-Rezaeyeh, Laroda, Queen roza, Bokhara, Ghalo, Black star, Zard Kordestane, Feriyar, Genotype ۱۹, G۹۹, Black Amber, Ghomi, Mortini, G۹۸ and G- balckhad the highest antibiosis resistance to plum moths. The means of ABI, MRCR, and PASI in this cluster were ۱.۳۹, ۰.۲۸, and ۷۵.۴۳, respectively. A significant correlation has been between ABI and fruit diameter, TSS, fruit tissue firmness, kernel thickness, harvest time, ratio of dry weight to wet fruit, MRCR and fruit length, fruit width, fruit fresh weight, dry fruit weight, fruit engineering diameter, fruit surface area and fruit tissue firmness, PASI and fruit tissue firmness. Therefore, these characteristics are effective in antibiosis reaction in plum germplasms. The results of this research are important as a part of the supplementary information for the selection of suitable plum cultivars for the development of plume cultivation.

کلیدواژه ها:

Lepidoptera ، host resistance ، Population Growth ، age structure