Open AccessIN VIVO AND IN VITRO STUDIES ON MORPHOLOGICAL CHARACTERIZATION OF SEPTORIA LYCOPERSICI CAUSING LEAF SPOT DISEASE IN TOMATO
Author(s) -
Aabid,
Sabiha Ashraf,
Hilal A. Malik,
Rakshanda Zargar,
Shaheegoo,
Zafar Iqbal Buhroo,
Vaseema Yousuf,
Masarat Bashir
Publication year - 2021
Publication title -
plant archives/plant archives
Language(s) - English
Resource type - Journals
eISSN - 2581-6063
pISSN - 0972-5210
DOI - 10.51470/plantarchives.2021.v21.no1.193
Subject(s) - pycnidium , septoria , leaf spot , mycelium , biology , fungus , potato dextrose agar , blight , spore , botany , hypha , spots , horticulture , apex (geometry) , inoculation , mycosphaerella graminicola , conidium , agar , bacteria , genetics
Septoria lycopersici responsible for Septoria leaf spot disease was observed on the leaves of tomato. Septoria lycopersici was isolated and completion of Koch’s postulates confirmed that the fungus was causal agent of the leaf spot disease. The fungus was cultured on potato dextrose agar medium. The fungus was very slow growing with 8-12 mm radial growth as recorded after 30 days of incubation. The fungus produced off white, irregular, hardened blackish mycelial growth oozing spore mass from pycnidia. Pycnidia were dark brown to black, globose to sub globose, ostiolated and thick walled. Pycnidiospores were filiform, straight with pointed to rounded ends.