Efficacy of alkali salts against Sclerotinia sclerotiorum causing stem rot of Indian mustard
103 / 58
Authors
-
Chetan VNP
Department of Plant Pathology, Punjab Agricultural University, Ludhiana 141004, Punjab, India
Author
-
Pankaj Sharma
Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana 141004, Punjab, India
Author
-
Shelke Saraswati Sudam
Department of Plant Pathology, Punjab Agricultural University, Ludhiana 141004, Punjab, India
Author
-
Pooja Bharmera
Department of Plant Pathology, Punjab Agricultural University, Ludhiana 141004, Punjab, India
Author
-
PS Sandhu
Department of Plant Pathology, Punjab Agricultural University, Ludhiana 141004, Punjab, India
Author
Keywords:
Alkali, pH, mycelial growth, detached leaf assay, Sclerotinia sclerotiorumAbstract
Acidifying infection area by secreting acids is important mechanism utilized by several necrotrophic organisms.
Sclerotinia sclerotiorum is a necrotrophic pathogen that causes stem rot of Indian mustard, utilize oxalic acid during
infection, leading to the rapid death of host tissues. Thus, the study was undertaken to evaluate the effect of the alkali
environment created by organic and inorganic salts (sodium carbonate, potassium silicate, calcium propionate, and
sodium propionate) on the growth and development of S. sclerotiorum using in vitro and in vivo assays. The lower area
under mycelial growth curve (AUMGC) value for calcium propionate @1.4% (15.5) followed by sodium propionate
@1.4% (16.5) against unamended control (118) indicated that mycelial growth rate was reduced with increased
concentrations of alkali salts. Detached leaf assay on Indian mustard showed complete inhibition of pathogen
development by sodium carbonate @1% and potassium silicate @1.4%. The findings suggest that alkali pH developed
due to organic and inorganic salts had an inhibitory effect on the growth and development of S. sclerotiorum
Downloads
