| This report focuses on two advanced breeding lines (F9), CRSP 08 and CRSP 14, generated from a cross between Florida MDR 98 and the Bolivian land race, Bayo Grande, which were evaluated for the third time in the 2005 Uniform Peanut Performance Tests. The yields, grades and resistance to pests and disease of these lines had been evaluated in tests by collaborators in Georgia, Florida and Alabama. Both lines had good-to-very good resistance to important southeastern production area pests and diseases, excellent resistance to early leaf spot, good resistance to late leaf spot and Tomato Spotted Wilt Virus (TSWV) resistance comparable to C88 R. Initial testing also showed promising resistance to cylindracladium black rot and white mold. Neither line was clearly superior; both were similar in all aspects of production results and post-harvest qualities.
Beginning in 2005, these lines were investigated for suitability of use in twin-row and reduced tillage systems. Initial results showed that both were suitable and performed well. Plant growth and size were comparable to C99 and Carver, and average yields exceeded Georgia Green by 47 percent in sprayed tests and by 83 percent in unsprayed tests. The lines also showed usable levels of resistance to emerging pests, leafhopper and three-cornered alfalfa hopper.
In a fungicides spray regimes test to evaluate disease resistance of these and other lines, levels of early and late leaf spot were light to moderate, and yields were generally not reduced by as few as two fungicide applications compared to six. However, Tomato Spotted Wilt Virus (TSWV) adversely affected yields of more susceptible varieties.
An evaluation of post-harvest qualities of CRSP 08 and 14 showed normal, very similar, readings for oil content, taste, blanching and roasting qualities and other parameters of commercial interest. Because they are sister lines with very close similarities, the team felt it might be better to combine them into a multi-line composite, such as when Florunner was released as a composite of four sister lines in the late 1960’s. This composite, under the name “Attaboy,” was proposed and passed at the April meeting of the UGA Peanut Commodity Committee, enabling the process to proceed to a petition of the UGA College of Agriculture Cultivar Release Committee for approval at their fall 2006 meeting.
As a result of 23 tests conducted during 2005, 106 lines and 203 individual plant selections from 26 promising F6 lines were selected for further testing during the 2006 crop season. Grades and other post-harvest quality factors were determined for the most promising candidate lines, and twenty tests were scheduled to be held in Georgia, Florida and Alabama.
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