National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Onion (Allium cepa) is an important spices crop commercially grown in India. The production of bulbs is limited by certain diseases. The most serious one is the purple blotch caused by Alternaria porri (Ellis) Cif. Variability studies on cultural and morphological features of the pathogen are of immense use in understanding the nature of the pathogen. In this regard an experiment was conducted and it was revealed that the growth of the fungus was significantly highest (8.8 cm) in Czapeck's agar and lowest was in Tochinai’s agar (4.5 cm). The Isolate Ap5 has recorded maximum radial growth (8.2 cm). Majority of isolates were produced brown and black pigmentation in Czapeck’s agar media and medium fluffy growth with smooth margin and submerged topography with poor to good sporulation. The size of conidia of six isolates ranged from 27.13 x 5.6 μm to 101.6 x 17.2 μm with a beak length ranged from 26.60 μm to 90.20 μm. Horizontal septum was 6 to 12 and vertical septa were 1 to 3.
Citations |
 |
 |
 |
 |
