Results of breeding work on cowpea-adzuki (Vigna angularis (Willd)) for the monsoonal climate of the Russian Far East

Abstract

At the Primorskaya vegetable experimental station – branch of the Federal state budgetary scientific institution «Federal scientific vegetable center», selection and introduction into production of a new legume crop for Russia – adzuki cowpea. The varieties Asia (for universal cultivation) and Far East (for horticultural vegetable growing) were created and included in the State Register of the Russian Federation. Promising specimens have been created, which, in terms of their biological and economic indicators, are not inferior to the varieties Asia and Far East. Primary seed production of new varieties is underway and their introduction into farms and garden vegetable growing. The grain yield of cowpea-adzuki universal samples ranged from 3.15 t/ha (Asia variety, standard) to 2.77 t/ha (sample POOS 31-15). The highest grain productivity was observed in the standard (Asia - 22.5 g/plant) and in sample POOS 44-15 (20.8 g/plant). The Asia variety and the promising sample POOS 31-15 (20.2 pieces/plant) produce the most beans per plant. It was noted that the Dalnevostochnaya variety has the greatest resistance to cracking of beans during their ripening (7.2 points). Samples for universal cultivation have above average resistance to bean cracking (5.8-6.5 points). The plant height of promising samples is quite favorable for combine harvesting: 64 (POOS 31-15) – 71 (POOS 39-15) cm. Due to the fact that the flowering of cowpea-adzuki is extended, the ripening of beans is rarely 100%. For promising samples, this indicator is high and amounts to 95.5% (POOS 44-15) - 99.8% (POOS 31-15), which fully complies with the ATT requirements (more than 90%). The creation of varieties of a new vegetable crop for Russia will improve the economics of agricultural production in the difficult climatic conditions of the Far Eastern Federal District.