Evaluation of Pigeonpea (Cajanus cajan) Accessions for Resistance to Meloidogyne incognita Race 3 and M. javanica

摘要

Twenty-eight pigeonpea (Cajanus cajan) accessions were evaluated for resistance to Meloidogyne incognita race 3 and M. javanica. In a greenhouse seedling test, accessions were inoculated with either M. incognita or M. javanica. Four of these accesions, (ICP 8866, ICP 11289, ICP 11291, and ICPH-2) were selected, based on the level of resistance they exhibited, for further evaluation in a field microplot test. In the greenhouse, 24 of the accessions inoculated with M. incognita were free of galls and egg masses. When inoculated with M. javanica, 10 of 28 pigeonpea accessions were not galled and egg masses were not observed. In the microplot test, the resistant accessions ICP 8866, ICP 11289, ICP 11291, and ICP H-2 caused population densities of both M. incognita and M. javanica to decrease. Yield of the four accessions was not affected by these two Meloidogyne species.