tailieunhanh - Field evaluation of early and late leaf spot diseases in advanced breeding lines of groundnut (Arachis hypogaea L.)

Leaf spots are the most serious foliar fungal diseases of groundnut (Arachis hypogaea L.) World wide. Early leaf spot and late leaf spots, singly or together can cause losses in pod yield of over 50% and reduce the quality of the pod and fodder. Screening of genotypes and advance breeding lines is one of the primary objective for resistance breeding in groundnut. Present investigation was carried out to screen 33 advance breeding lines and 7 released varieties of groundnut against early and late leaf spot diseases. Early leaf spot disease scoring was done at 35 and 45 days after sowing and late leaf spot scoring was done at 75 and 85 days after sowing on 1 to 9 scale. |