Sushila Yadav, R.N. Bunker1, Amit Trivedi, H.K. Sharma, Vinod Saharan, Kapil Dev Ameta4, Pinki Sharma, Brijesh, Parul Upadhyay, Kiran Kumawat, Shaik Munnysha and Smriti Akodiya
Abstract
The economically significant dicot legume known as soybean [Glycine max (L.) Merr.] is a member of the Fabaceae family. India is the worldâs fifth-largest producer of soybeans, and its major oilseed and legume crop. A major obstacle to the nationâs soybean farming is the widespread occurrence of diseases like root rot (Rhizoctonia solani). The development of disease-resistant soybean cultivars is essential to resolving this problem and reducing production losses. Twenty varieties/genotypes were evaluated during kharif season 2023 and 2024. The disease incidence of Rhizoctonia root rot varied from 3.75 to 33.78 per cent. Out of twenty, two varieties/genotypes JS-335 and NRC-86 were exhibited as susceptible (S) reaction, nine varieties/genotypes such as JS-2029, MDS-2001, JS-20-116, NRC-146, MACS-1520, JS-2069, RKS-45, RVS-18 and NRC- 130 were classified as moderately susceptible (MS) with disease incidence between 12.90% to 22.37%, seven varieties/genotypes, including NRC-148, JS-2098, NRC-127, JS-2034, MACS-1566, RVS-2002-4 and NRC- 138 exhibited disease incidence ranging from 6.66% to 8.89% were categorized as moderately resistant (MR). Two varieties/genotypes, namely JS-9560 and RKS-48 were classified as a resistance variety (R). None of the varieties and germplasms were found to be immune, highly resistant, and highly susceptible. These results highlight the significance of additional study and breeding initiatives to create soybean cultivars with improved resistance to root rot. In order to support sustainable soybean cultivation in India, it is imperative to identify and promote genotypes that are resistant to disease.