Diagnosis of intrapopulation adaptation genesis of bird cherry aphid <i>Rhopalosiphum padi</i> (L.) under nutrition conditions on various spring common wheat varieties

The widespread cultivation of highly productive varieties agricultural crops often leads to the emergence and spread new intraspecific forms insects capable mass reproduction. control these processes is environmental importance possible based on monitoring variability phenol appearance pest populations. There has been carried out a vegetative field estimation phenogenetic such grain as bird cherry-grass aphid Rhopalosiphum padi (L.) under nutrition 15 spring common wheat varieties. conducted an ecological phenotyping adaptability intrapopulation composition aphids conditions according abundance dispersal ability in offspring summer morphs (emigrants wingless viviparas) three different clones. identified differentiated interaction clones with fodder plants for both indicators. shown that reproduction rates emigrants viviparous within (14, S 85) differed (t 14 = 3.9, p =.000; Fs 8.8, 0.000; F 85 7.9, 0.000). Clone was more successful than others reproducing vivipares (F 17.8, 3.4; 0.03; F' 2.98, 0.05; 5.3, 0.003, respectively). Favorability individual did not match. When population destabilized, compensatory mechanisms included discrepancy reactivity unfavorable conditions. correlation (r 0.53; 0.04) between degree favorableness feeding vegetation (antibiosis) (antibiosis antixenosis), which confirmed similarity genetic nature types resistance.