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ARS Home » Southeast Area » Tifton, Georgia » Crop Genetics and Breeding Research » Research » Publications at this Location » Publication #180204
Title: REGISTRATION OF AT3081R PEANUT

Author
item Anderson, William - Bill
item HARVEY, J - GOLDEN PEANUT CO

Submitted to: Crop Science
Publication Type: Germplasm Release
Publication Acceptance Date: 7/31/2005
Publication Date: N/A
Citation: N/A

Interpretive Summary: AT 3081R is a mid-maturity (135 days in South Georgia) runner peanut and was selected based on superior yield and tolerance to tomato-spotted wilt virus (TSWV). It was released in the spring of 2005 and will be made available for growers. AT 3081R was developed by crossing a commercial adapted parent (AT 108) with a breeding line derived from a cross with a wild peanut accession that had high nematode resistance in 1995. The resulting hybrid plants underwent generations of selfing from which individual plants were selected until the year 2000. The resulting experimental line 00-3081B was tested in a total of 14 yield trials at numerous locations in Southeastern United States. The average yields of AT 3081R surpassed the current popular variety Georgia Green by approximately 10% and had greater tolerance to TSWV.

Technical Abstract: AT 3081R is a mid-maturity (135 days in South Georgia) runner peanut and was selected based on superior yield and tolerance to tomato-spotted wilt virus (TSWV). Parents GK-7 (PVP 8200141, PI 601061) and H 95 were crossed in 1995. Parent H 95 was derived from interspecific crossing, and introgression with wild species Arachis batizocoi (Acc. 9484) at North Carolina State University. H 95 was selected as a parent for good agronomic traits and for high levels of peanut root knot nematode (Meloidogyne arenaria (Neal) Chitwood) resistance (Anderson et al., 2004). Single plant pedigree selection began in the F2 generation and continued to F5 generation. After bulk harvesting for two seasons individual F7 plants were selected. In 2000 the progeny row 3081B was selected based on production, TSWV resistance and runner market type pod/seed characteristics. Yields averaged 4066 kg ha-1 for AT 3081R compared to 3758 kg ha-1 for C99R (Gorbet and Shokes, 2002) and 3448 kg ha-1 for Georgia Green (Branch, 1996) in seven replicated yield trials over six locations in the Southeast during 2001 and 2002. AT 3081R had average yields of 4468 kg ha-1 versus 3798 kg ha-1 for Georgia Green in seven other replicated tests in 2003 and 2004. Besides TSWV tolerance, AT 3081R has moderate resistance to leaf spot diseases (Cercospora arachidicola Hori and Cercosporidium personatum Berk. & M.A. Curt.). In a replicated greenhouse study AT 3081R had moderate resistance (6084 egg g-1 root) to peanut root knot nematodes compared to Georgia Green (14,998 egg g-1 root) or C99R (13,110 egg g-1 root).