AGROBIOLOGICAL CHARACTERISTIC AND POTENTIAL OF BULGARIAN PEA VARIETIES

Abstract

An agrobiological characteristic and capacity for green mass and seed production from Bulgarian pea (Pisum sativum L.) varieties and a breeding line both created at the Institute of Plant Genetic Resources (IPRG) – Sadovo has been carried out for fifteen years. The choice of varieties is based on their qualities such as early productivity and winter resistance. The pea yield, green mass, the yield of crude protein (kg/ ha-1) and content crude protein (%) have been studied for the same period. Among the winter pea varieties, the Vessela variety (352.3 kg) showed the highest yield during the entire fifteen-year experiment. As for the spring varieties - Tedi (410.6 kg) had the highest yield. The highest yield of green mass was reported for the breeding line L 12 AB, which was also highly productive for seeds. For the winter varieties, yield is strongly influenced by the relevant year weather conditions and variety. Taking into account the spring varieties, the year impact was more substantial, than the variety impact. More highly productive are the earlier varieties, as the newly bred varieties of afila type, stood out against the spring varieties. The yield by years for the spring forms showed more significant fluctuation depending on agrometeorological conditions than the winter varieties.