REACTION OF BRASSICA GENOTYPES FOR SCLEROTINIA STEM ROT UNDER FIELD CONDITION

O.P. BHARTI¹*, R.K. PANDYA², R.C. JATAV³, B.R. BARAIYA⁴, A.K. TRIPATHI⁵, P.K. GUPTA⁶, J.C. GUPTA^7
1Department of Plant Pathology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India
²Department of Plant Pathology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India
³Krishi Vigyan Kendra, Kolipura Tappar, Rijgaon, 461331, Jawaharlal Nehru Krishi Vishwavidyalaya, Jabalpur, 482004, Madhya Pradesh, India
⁴Department of Plant Physiology, College of Agriculture, Sehore, 466001, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India
⁵Krishi Vigyan Kendra, Deori, 470226, Jawaharlal Nehru Krishi Vishwavidyalaya, Jabalpur, 482004, Madhya Pradesh, India
⁶Director Extension Services, Jawaharlal Nehru Krishi Vishwavidyalaya, Jabalpur, 482004, Madhya Pradesh, India
⁷ICAR-Krishi Vigyan Kendra, Shivpuri, 473551, Madhya Pradesh, India
* Corresponding Author : opbharti@gmail.com

Received : 22-08-2022     Accepted : 16-09-2022     Published : 30-09-2022
Volume : 14     Issue : 9       Pages : 11651 - 11654
Int J Agr Sci 14.9 (2022):11651-11654

Keywords : Indian mustard, Stem rot, Genotypes, Screening, Resistance
Academic Editor : S. Chandraprakash
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Rajeev Gandhi National Fellowship for financial support. Authors are also thankful to Department of Plant Pathology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India and Krishi Vigyan Kendra, Kolipura Tappar, Rijgaon, 461331; Krishi Vigyan Kendra, Deori, 470226; ICAR-Krishi Vigyan Kendra, Shivpuri, 473551, Madhya Pradesh, India
Author Contribution : All authors equally contributed

Sclerotinia stem rot (Sclerotinia sclerotiorum) has become a major biotic threat which has established a key position in northern part of Madhya Pradesh and resulted limiting the crops production particularly Brassica juncea in several pockets such as Morena, Bhind, Gwalior, Sheopur and Datia in Madhya Pradesh besides several parts of the country. Forty-Seven Indian mustard accession validated under artificial inoculation to identify as highly resistant through 0-4 scale with computation of disease incidence percent. The evaluation 47 accession facilitated identification of superior genotypes with highly magnitude of genetic diversity for their use to develop resistant varieties and compared to check. The pressure of Sclerotinia sclerotiorum was so high that none of the tested 47 genotypes could secure identified as highly resistant and resistant across the genotypes that indicates pathogenic variability. However, only one elite genotype (JD-6) showed the moderately resistant and five lines (SHRADDHA, Maya, B-85, RMWR-09-6, JTC-1) were found moderately susceptible, three lines (SEJ-2, RVM-1 and RMM-09-1) showed susceptible and rest of the thirty-eight lines showed highly susceptible reaction. A elite genotype (JD-6) showed promising moderately resistant with parameters viz., Stem girdled length (1.95cm), Sclerotia / stem (1.80), Sclerotia length (4.15mm) and Sclerotium weight (21.70mg) compared to rest accessions. The resistant coupled with resistant superiority may be useful genetic resources for improvement of Indian mustard. In addition, the resistant accession can serve as a rich gene pool for breeding progeny and Sclerotinia stem rot disease

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