Identification of new stable resistant sources and assessing agro-morphological performance of sponge gourd germplasm against Tomato Leaf curl New Delhi Virus incidence

• DOI: 10.3389/fpls.2024.1373352
• Publication Date: 2024-04-24T04:40:42Z
• Authors: Jogendra Singh; Anilabha Das Munshi; Deepak Singh; Bharat Raj Meena; Awani Kumar Singh; Arvind Nagar; Yvonne Angel Lyngdoh; Bhoopal Singh Tomar; Shyam Sundar Dey; Jeetendra Kumar R...; Narendra Singh; Narendra Kumar; Kamla Mahajani
• Keywords: Germ plasm; Gourd; Biplot; Leaf curl

(TolCNDV) causes yellow mosaic disease, which poses a significant biotic constraint for sponge gourd cultivation, potentially resulting in crop loss of up to 100%. In the present investigation, 50 diverse genotypes were screened 3 years under natural epiphytotic conditions. A subset 20 was further evaluated across four different environments. The combined analysis variance revealed genotype × environment interaction. Eight consistently exhibited high and stable resistance preliminary screening multi-environment testing. Furthermore, plus interaction biplot identified DSG-29 (G-3), DSG-7 (G-2), DSG-6 (G-1), DSGVRL-18 (G-6) as desirable genotypes, have better yield potential even diseased by trait multi-trait genotype-ideotype distance index validated these combining higher other traits with levels. Additionally, resistant activities defense-related enzymes compared susceptible genotypes. Thus, our study will serve valuable genetic resource carrying out future breeding programs against ToLCNDV.