COMPARATIVE EVALUATION OF GARDEN PEA VARIETIES OF TWO MORPHOTYPES ACCORDING TO A SET OF TRAITS IN KRASNODAR REGION

In 2014-15, evaluated in Krasnodar Region were the yield of green pea, net productivity of photosynthesis, productivity of a foliage surface unit as well as the economic coefficient in 16 garden pea varieties of the common leafy and leafless morphotypes. The study helped to identify leafless varieties comparable with those of the conventional morphotype accordin to the set of traits studied

ИСХОДНЫЙ МАТЕРИАЛ ДЛЯ СОЗДАНИЯ СОРТОВ ГОРОХА ОВОЩНОГО НА КУБАНИ

Results of two yeaґs field studying of 522 samples of peas are presented. Twenty-five samples with valuable agronomic traits were selected for further breeding program. Correlation between duration of interstage periods was revealed.Представлены результаты двухлетнего полевого изучения 522 образцов гороха из коллекции ВИР, а также селекционный материал станции и мутантные формы по признакам, актуальным для селекции овощного гороха. Для включения в селекционный процесс выделено 25 образцов с комплексом хозяйственно ценных признаков. Достоверно установлена сильная связь между продолжительностью отдельных межфазных периодов

INITIAL BREEDING MATERIAL FOR DEVELOPMENT OF PEA VARIETIES IN THE KUBAN

Results of two yeaґs field studying of 522 samples of peas are presented. Twenty-five samples with valuable agronomic traits were selected for further breeding program. Correlation between duration of interstage periods was revealed

A neurotoxic insecticide promotes fungal infection in Aedes aegypti larvae by altering the bacterial community

Symbiotic bacteria have a significant impact on the formation of defensive mechanisms against fungal pathogens and insecticides. The microbiome of the mosquito Aedes aegypti has been well studied; however, there are no data on the influence of insecticides and pathogenic fungi on its structure. The fungus Metarhizium robertsii and a neurotoxic insecticide (avermectin complex) interact synergistically, and the colonization of larvae with hyphal bodies is observed after fungal and combined (conidia + avermectins) treatments. The changes in the bacterial communities (16S rRNA) of Ae. aegypti larvae under the influence of fungal infection, avermectin toxicosis, and their combination were studied. In addition, we studied the interactions between the fungus and the predominant cultivable bacteria in vitro and in vivo after the coinfection of the larvae. Avermectins increased the total bacterial load and diversity. The fungus decreased the diversity and insignificantly increased the bacterial load. Importantly, avermectins reduced the relative abundance of Microbacterium (Actinobacteria), which exhibited a strong antagonistic effect towards the fungus in in vitro and in vivo assays. The avermectin treatment led to an increased abundance of Chryseobacterium (Flavobacteria), which exerted a neutral effect on mycosis development. In addition, avermectin treatment led to an elevation of some subdominant bacteria (Pseudomonas) that interacted synergistically with the fungus. We suggest that avermectins change the bacterial community to favor the development of fungal infection