Open AccessAlternaria tenuissima Causing Alternaria Blight on Pigeonpea in India
Author(s) -
Mamta Sharma,
Raju Ghosh,
U. Naga Mangla,
K. B. Saxena,
S. Pande
Publication year - 2012
Publication title -
plant disease
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.663
H-Index - 108
eISSN - 1943-7692
pISSN - 0191-2917
DOI - 10.1094/pdis-01-12-0060-pdn
Subject(s) - biology , spots , blight , conidium , bipolaris , cajanus , crop , alternaria , horticulture , cultivar , legume , potato dextrose agar , fungus , leaf spot , botany , agronomy , agar , genetics , bacteria
Pigeonpea [Cajanus cajan (L.) Millsp.] is a major grain legume of the tropics and subtropics worldwide. In India, pigeonpea is the third most important food legume after chickpea and field pea. Blight symptoms on pigeonpea were observed in alarming proportion during 2009-2011 crop seasons in Andhra Pradesh state in India. The disease incidence ranged between 20-80% irrespective of cultivars sown. The infected plants in the field showed symptoms on all the aerial parts of the plant (leaves, stems, buds and pods) irrespective of age of the plant and leaves. Symptoms on leaves were small, circular, necrotic spots that develop quickly forming typical concentric rings (Kannaiyan and Nene (1977)..