Studies on host range of Alternaria spp. causing blight disease in linseed: STUDIES ON HOST RANGE OF ALTERNARIA SPP. CAUSING BLIGHT DISEASE IN LINSEED

H H ASMA; K AJITHKUMAR; A S SAVITHA; S T YENJERAPPA; M R GOVINDAPPA; D KRISHNAMURTHY

doi:10.56739/jor.v38i3.137176

Authors

H H ASMA College of Agriculture, University of Agricultural Sciences, Raichur-584 104, Karnataka
K AJITHKUMAR College of Agriculture, University of Agricultural Sciences, Raichur-584 104, Karnataka
A S SAVITHA College of Agriculture, University of Agricultural Sciences, Raichur-584 104, Karnataka
S T YENJERAPPA College of Agriculture, University of Agricultural Sciences, Raichur-584 104, Karnataka
M R GOVINDAPPA College of Agriculture, University of Agricultural Sciences, Raichur-584 104, Karnataka
D KRISHNAMURTHY College of Agriculture, University of Agricultural Sciences, Raichur-584 104, Karnataka

https://doi.org/10.56739/jor.v38i3.137176

Keywords:

Alternaria spp., Host range, Linseed

Abstract

Alternaria blight is one of the most serious diseases of linseed caused by different Alternaria spp. The genus Alternaria Nees ex Fr. is widely distributed all over the world and is represented by a number of species. The genus occupies a prime position and is significantly important as its members are well known in causing wide spread diseases of economic plants such as cereals, oilseed crops, spices, vegetables and ornamentals. The studies on host range of Alternaria spp. revealed that the pathogen was unable to infect any of the crop plants taken for study under the pot conditions but showed mycelial growth on all the crops tested through detached leaf technique under laboratory condition. The maximum mycelial growth of Alternaria spp. was noticed on carrot grass (9.56 mm) followed by groundnut (8.82 mm), whereas, minimum mycelial growth was observed on sesame (2.52 mm). Therefore, based on this host range test, it can be concluded that Alternaria spp., infecting linseed may also be pathogenic to other hosts only under controlled and favourable conditions.

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Studies on host range of Alternaria spp. causing blight disease in linseed