Evaluation of Yield and Yield Components in Rapseed (Brassica Napus) Cultivars in Eastern North of Iran

摘要

More than 90 percent of Iranian domestic need for oil is imported, putting a heavy burden on country's economy. Rapeseed with having 40 percent oil and almost 39 percent protein in its meal and its adaptability to some regions in Iran has a high potential as an oil crop. Variety plays an important role in the yield obtained. Christomer(1996) showed that varieties have different yields in different climates. According to Torling(1991), fast initial growth, early flowering, short and thick stems, flowers without petals, resistant to seed abscission during harvest, more pods on the main stem, and fewer sub-branches are among the main traits which increase the yield. Jazmy(2004) found Hayola 42 to have the highest yield with 3560 Kg/ha in Iran. Farzin(2006) showed Cobra to be the most productive with 4130 kg/ha among 25 varieties.