Genomics-Assisted Breeding for Resistance to Leaf Spots and Rust Diseases in Peanut

Forward Breeding for Efficient Selection

“…Likewise, work has been done in developing cultivars resistant to foliar diseases (rust and LLS) together on high-oleic background (Janila et al 2016;Bera et al 2018;Shasidhar et al 2020). There have certain attempts to combine high-oleic acid with foliar disease resistance in GPBD 4, G 2-52, TMV 2, and JL 24, in addition to ICGV 06189 variety (Bhat et al 2022). Among the molecular breeding lines developed through marker-assisted backcrossing for high oleic acid (Janila et al 2016), two Virginia bunch high oleic varieties namely Girnar 4 (ICGV 15083) and Girnar 5 (ICGV 15090) and two Spanish bunch high oleic varieties namely GG 39 (ICGV 16697) and GG 40 (ICGV 16688) are released for cultivation in India.…”

“…With GPBD 4 as the donor, various attempts have been made to develop LLS-and rust-resistant backcross lines in JL 24 (Yeri and Bhat 2016) and TMV 2 (Kolekar et al 2017;Ramakrishnan et al 2020). Two foliar disease resistance varieties namely Improved JL 24 (DBG 3) and Super TMV 2 (DBG 4) using donor source GPBD 4 (Bhat et al 2022) were developed using marker-assisted selection and released for cultivation in Karnataka state of India. The most of lines are being tested in multiple locations or on large-scale farms in order to facilitate varietal development (Bhat et al 2022).…”

“…Two foliar disease resistance varieties namely Improved JL 24 (DBG 3) and Super TMV 2 (DBG 4) using donor source GPBD 4 (Bhat et al 2022) were developed using marker-assisted selection and released for cultivation in Karnataka state of India. The most of lines are being tested in multiple locations or on large-scale farms in order to facilitate varietal development (Bhat et al 2022).…”