Diversification of primary gene pool through introgression of resistance to foliar diseases from synthetic amphidiploids to cultivated groundnut (Arachis hypogaea L.)

Segmental allopolyploidy in action: Increasing diversity through polyploid hybridization and homoeologous recombination

“…Incubation period (time for the appearance of first lesion) was recorded. LLS severity was scored 120 days after sowing (DAS) using a 0–9 visual scale based on defoliation and number of fungal lesions (see Kumari et al., ). Also, the area of the leaves affected by LLS was measured by image analysis of 5–10 leaves from the middle third portion of four branches of each plant; leaves were scanned, and percentage diseased leaf area (DLA) was calculated using the program Quant (Vale et al., ).…”

Response of Midgut Trypsin- and Chymotrypsin-Like Proteases of Helicoverpa armigera Larvae Upon Feeding With Peanut BBI: Biochemical and Biophysical Characterization of PnBBI

“…In this scenario, allotetraploid and amphidiploid synthetic peanut varieties have been generated which possessed several desirable traits with wide genetic variability of wild germplasm (Mallikarjuna et al, 2011). This provided an opportunity for introgression of resistance traits from eminent synthetic varieties into cultivated peanut gene pool by developing interspecific hybrid varieties (Mallikarjuna et al, 2011;Kumari et al, 2014). Likewise, foliar disease resistance in peanut has been achieved by introgression of traits from synthetic amphidiploids namely ISATGR 278-18 (A. duranesis x A. batizocoi) and ISATGR 5B (A. magna x A. batizocoi) into five (ICGV 91114, ICGS 76, ICGV 91278, JL 24, and DH 86) cultivars (Kumari et al, 2014).…”

New hybrids from peanut (Arachis hypogaea L.) and synthetic amphidiploid crosses show promise in increasing pest and disease tolerance

“…In contrast to the first approach, the latter allows introgression in both genomes at the same time. Consequently, some research groups are developing interspecific hybrids of Arachis to introgress wild species genes into A. hypogaea (Burow et al, 2001;Fávero et al, 2006;Kumari et al, 2014).…”