On the biology of pigeonpea cyst nematode, Heterodera cajani Koshy, 1967
Abstract
Root leachates of pigeonpea, hyacinth bean, cowpea, moth bean and sesame stimulated the larval hatch of Heterodera cajani. Leachates collected from 2,3,4-week old plants or soil were more stimulatory than those from 1-week-old plants. Maximum larval penetration and multiplication occurred on pigeonpea, dhaincha (Sesbania aculeata) and hyacinth bean. The nematode took 23 days for completion of one life cycle on pigeonpea, dhaincha, moth bean (Vigna aconitifolia), sesame; 26 days on green gram and 29 days on black gram and cowpea at 24.3–38.5°C. H. cajani did not develop beyond 3rd stage larva on cluster bean. The fecundity of the nematode was not affected by the host.
Keywords
Heterodera cajani, biology, root leachates, life cycle