PMC:4502374 / 41788-42999 JSONTXT

{"project":"2_test","denotations":[{"id":"25943521-24927821-43367149","span":{"begin":247,"end":251},"obj":"24927821"},{"id":"25943521-20526757-43367150","span":{"begin":294,"end":298},"obj":"20526757"},{"id":"25943521-11756306-43367151","span":{"begin":339,"end":343},"obj":"11756306"},{"id":"25943521-15729391-43367152","span":{"begin":813,"end":817},"obj":"15729391"},{"id":"25943521-21636391-43367153","span":{"begin":832,"end":836},"obj":"21636391"},{"id":"25943521-19234559-43367154","span":{"begin":851,"end":855},"obj":"19234559"},{"id":"25943521-19234686-43367155","span":{"begin":872,"end":876},"obj":"19234686"}],"text":"During the past two decades, the introgression of wild alleles for resistance to pests and diseases has proven very valuable for the peanut crop. Wild alleles confer the strongest known resistance phenotypes not only against rust (Varshney et al. 2014) but also late leaf spot (Khedikar et al. 2010) and root-knot nematode (Stalker et al. 2002; Simpson et al. 2003; Chu et al. 2011; Burow et al. 2014). These alleles have proven to be stable over different environments and in different genetic backgrounds. The use of alleles harbored on wild chromosome segments also has facilitated the use of molecular markers for backcross selection because the segments have a high rate of DNA polymorphism relative to cultivated peanut. The improved understanding of wild and cultivated species relationships (Milla et al. 2005; Seijo et al. 2007; Burow et al. 2009; Robledo et al. 2009; Moretzsohn et al. 2013; Leal-Bertioli et al. 2014b), increased ease of marker development, and better understanding of genome structure that is being gained from genome sequencing of peanut’s diploid ancestors (www.peanutbase.org) are likely to facilitate the greater use of wild alleles and enable further gains for the peanut crop."}