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Induction of phytoalexins in pigeonpea ( Cajanus cajan ) in response to inoculation with Fusarium udum and other treatments
Author(s) -
Marley Paul S,
Hillocks Rory J
Publication year - 2002
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.586
Subject(s) - cajanus , fusarium wilt , cultivar , biology , conidium , inoculation , horticulture , fungi imperfecti , fusarium , botany , fusarium oxysporum
Cajanol accumulation was monitored in four cultivars of pigeonpea, Cajanus cajan (L) Millsp, after inoculation with 2 × 10 6 conidia ml −1 of Fusarium udum Butler. Rapid accumulation was observed only in wilt‐resistant cultivar ICP 9145. Another wilt‐resistant cultivar, ICP 8863, had low levels of cajanol similar to those in wilt‐susceptible cultivars ICP 2376 and Malawi local, indicating that rapid cajanol accumulation is not positively correlated with resistance to wilt in pigeonpea. A comparison of various inducing agents showed live conidia of the pathogen to cause more rapid accumulation than the other agents. © 2002 Society of Chemical Industry