بررسی برخی از شاخص های جمعیت زنبور گرده افشان انجیر Blastophaga psenes (L., 1758) (Hym. Agaonidae) در نژادگان های مختلف برانجیر استان فارس

Fig wasp (Blastophaga psenes L.) plays a major role in the caprification of edible figs. It also leads to increases in the fig fruit quality. The syconia of the profichi caprifigs due to the presence of Blastophaga wasp and sufficient pollen are necessary to caprification and fruit production of the Smyrica edible figs. Due to the different suitability of caprifig genotypes in caprification, a study was conducted to investigate the effect of caprifig genotypes on the fig wasp (B. psenes) density in Fars province (Estahban, Kavar, Khafar, Sarvestan and Shiraz cities) during 2022-2023. In this research, the profichi syconia of 43 caprifig genotypes the percentage of syconia containing the fig wasp, the average population density, and the relative density of fig wasp were analyzed using the K Nearest Neighbor (KNN) algorithm. The results showed that there is a significant difference between the caprifig genotypes in terms of the percentage of syconia containing the fig wasp (MS=181.02 df=42), the average fig wasp density (MS=167.32, df=42), and the relative population density of the fig wasp (MS=0.05, df=42). The average percentage of syconia containing the fig wasp, the average population density, and the relative density of fig wasps were 92.83±13.51, 45.25±26.29 and 0.18±0.24 wasps in one syconium of the caprifig genotypes, respectively. Regarding the number of fig wasps, the “Hakali” genotype had the highest average population density and relative density 99 and 0.99, while the “Shahanjiri” genotype had the lowest values of 0.12 and 0.87 for population density and relative density of fig wasps respectively. The different caprifig genotypes vary in characteristics such as syconium size, syconium yield per shoot, ripening time, amount of pollen production, and pollen viability. The caprifig genotypes with a high number of B. psenes wasps could serve as a useful index for identifying fig genotypes with a high potential for caprification. They should be considered for fig production or breeding programs.