EFFECT OF ROOT LEACHATES OF SOME LEGUMES OF DIFFERENT AGES ON THE HATCHING OF HETERODERA CICERI

Abstract

The emergence of juveniles from cysts of Heterodera ciceri was investigated in root leachates of pea, grasspea, lentil, chickpea, Cicer bijugum and C. pinnutifidum, collected at emergence of plants and 10, 20, 30, 40, 50 or 60 days after, and maintained at 20°C ± 2 for a five week period. Highest hatch of eggs was obtained from cysts incubated in root leachates from pea, chickpea, lentil, C. bijugum and C. pinnatifidum collected 10 days after plant emergence onwards. All root leachates collected at plant emergence had limited effect on egg hatch. Root leachates collected from grasspea at all plant age were also poorly effective.