2013 journal article
Registration of Two Multiple Disease-Resistant Peanut Germplasm Lines Derived from Arachis cardenasii Krapov. & WC Gregory, GKP 10017
Registration of Two Multiple Disease-Resistant Peanut Germplasm Lines Derived from Arachis cardenasii Krapov. & WC Gregory, GKP 10017. JOURNAL OF PLANT REGISTRATIONS, 8(1), 86–89.
Two tetraploid (2n = 4x = 40) peanut (Arachis hypogaea L. subsp. hypogaea var. hypogaea) germplasm lines, GP-NC WS 16 (SPT 06-06) (Reg. No. GP-235, PI 669445) and GP-NC WS 17 (SPT 06-07) (Reg. No. GP-236, PI 669446), derived from interspecific hybridization, were developed in the peanut genetics program at North Carolina State University (NCSU), Raleigh, NC. These two lines were tested extensively by the North Carolina Agricultural Research Service from 2006 through 2012 in disease evaluation tests. They have unique alleles introgressed from the diploid (2n = 2x = 20) wild species, A. cardenasii Krapov. & W.C. Gregory. The germplasm lines are also unique in that they exhibited multiple disease resistances superior to the germplasm lines derived from A. cardenasii that were released previously by NCSU. Resistance to multiple diseases included early leaf spot (ELS), Cylindrocladium black rot (CBR), Sclerotinia blight (SB), and tomato spotted wilt (TSW). One of the lines, GP-NC WS 17, also exhibited drought tolerance in field and greenhouse studies. Thus, it can be concluded that these two peanut germplasm lines derived from diploid wild species have multiple biotic stress resistances, specifically for ELS, CBR, SB, and TSWV, as well as abiotic stress resistance in the case of GP-NC WS 17. These two lines should provide unique, improved germplasm for breeders interested in multiple disease resistance and in expanding the germplasm pool of A. hypogaea.