Нажмите Enter для поиска, Esc для отмены

PEA AND SOYBEAN SOURCES OF RESISTANCE TO BIOTIC FACTORS

PEA AND SOYBEAN SOURCES OF RESISTANCE TO BIOTIC FACTORS

Institution

Plant Production Institute nd. a V. Ya. Yuryev of NAAS

Section

SOURCES AND DONORS

Abstract

Goal. Identification of new genetic sources of pea and soybean resistance to major pathogens and pests.

Results and Discussion. The article presents the study results on identification of pea and soybean sources of resistance to pathogens and pests among the collection accessions of the NCPGRU over the period of 2011-2015. On artificial infections of bean root rot, Ascochyta leaf and pod spot, provocative backgrounds of soybean bacterial blight, pea moth, pea weevil, and lima bean pod borer, resistance of 143 collection pea accessions and 305 new soybean accessions from the NCPGRU was studied. Various hydrothermal conditions of the legume vegetation periods during the study years enabled revealing responses of the collection pea and soybean accessions to infecting by local populations of Fusarium, Ascochyta, bacteria and pests and also contributed to the identification of new effective sources of resistance. The study of 143 pea accessions on severe Fusarium background detected ni resistance accessions, but 11 sources with individual moderate resistance to Fusarium root rot  (damage of root system did not exceed 40%, which corresponds to the resistance score of 5) were identified. These were local accessions from Ukraine, a number of accessions from Russia and Canada. In addition, 24 pea sources with individual resistance to Ascochyta leaf and pod spot, in which damage of vegetative mass did not exceed 10% on an artificial infection during the three study years, were identified. Sources with individual and group resistance to pests (pea moth, pea weevil) as well as complex resistance to diseases and pests in various combinations were also detected. During 2011-2015, the study of 305 collection soybean accessions identified  54 sources with individual resistance to some diseases, group and complex resistance: 16 accessions with individual resistance to Fusarium; 6 accessions with individual resistance to bacterial blight; 2 accessions with individual resistance to lima bean pod borer; 25 accessions with group resistance to Fusarium and bacterial blight; 1 accession with complex resistance to bacterial blight and lima bean pod borer; and 4 accessions with complex resistance to Fusarium, bacterial blight and lima bean pod borer.

Conclusions. Thus, during 2011-2015 the studies in various weather conditions on artificial infections and provocative pest backgrounds distinguished 53 pea sources and 54 soybean sources with individual, group and complex resistance to pathogens and pests.

Keywords

pea, soybean, resistance, infectious background, disease, provocative background, pests, sources