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ACCESSIONPLANT NAMETAXONOMYORIGINGENEBANKIMAGEAVAILABILITYRECEIVEDSOURCE TYPESOURCE DATECOLLECTION SITECOORDINATESELEVATIONHABITATIMPROVEMENT LEVELNARRATIVE
0PI 642850'TAMNUT OL06'Arachis hypogaea L. subsp. fastigiata Waldron var. fastigiata (Waldron) Krapov. & W. C. Greg. Texas, United StatesPVPONot Available2006DEVELOPED05/2006Cultivar Tamnut OL06 is a large seeded Spanish peanut (Arachis hypogaea L. subsp. fastigiata Waldron var. vulgaris Harz.) that has the high O/L genes and is high yielding. It exhibits some disease tolerance, and is earlier in maturity than runner cultivars presently available to growers. Tamnut OL06 was tested as Tx034342, and released in May 2006 by the Texas Agr.Exp. Sta., Texas AandM Univ. System. The plants are the same size as Tamspan 90, with upright growth habit and a mainstem that is not prominent. Vegetative growth adheres to the A. fastigiata type, with mostly sequential growth pattern, with flowers on the mainstem. Leaf color is lighter green than OLin (RHS 137A for Tamnut OL06 vs. 146A for OLin). Limited shelling evaluations indicate that Tamnut OL06 will shell in an acceptable manner. Shelling turnout studies used runner screens because this cultivar has seed size similar to runner-type cultivars, when grown in West Texas, and is being released to be marketed in that region as a runner-type peanut. The ELK (8.53 x 25.4 mm slotted screen) fraction is significantly higher (P=0.0001, DMRT) in Tamnut OL06 than in Tamspan 90 or OLin. The Medium (7.14 x 25.4 mm slotted screen) fractions were not significantly different (P=0.083) among the three lines. The US No.1 (6.35 x 25.4 mm slotted screen) fraction was smallest (P=0.0001) for Tamnut OL06 among the three Spanish lines. The seed size distribution for Tamnut OL06 is very similar in the three major fractions to Florunner a long time favorite of the processing and manufacturing industry. Tests on the blanching properties of Tamnut OL06 indicated that it blanches as well as any of the other Spanish varieties tested, and will be acceptable to the blanching and split Cblanching markets. Yields of Tamnut OL06 have been equal to or slightly higher than Tamspan 90 and OLin. Grades (TSMK) have generally run up to two points lower than Tamspan 90 and OLin. Tests in the Sclerotinia minor nursery at the TAES Stephenville, Texas have shown that Tamnut OL06 has resistance equal to that of Tamspan 90 and OLin: Tamnut OL06 = 5.7 rating on scale of 0 to 10 (10 = all plants dead), Tamspan 90 = 5.3, and OLin = 4.7 (NS P 0.05). Analysis of maturity data indicates that Tamnut OL06 is equal to Tamspan 90 and OLin and significantly earlier than the Florunner variety with ratings of 89.1%, 85.3%, 86.1%, and 45.8% respectively (P 0.05). 1702680PI 642850