Marianna NFREC Reserph R~ppt,97-2
* Lib / hubarv
SunOleic 97R Peanut
WAR 17 1997
D.W. Gorbet' and D.A. Knauft2
University of Florida
SunOleic 97R is a new runner growth habit and market-type peanut cultivar released by
the Agricultural Experiment Station of the University of Florida (IFAS). This new cultivar
provides the peanut industry with the greatly improved oil chemistry, which was initially made
available in SunOleic 95R, but with more acceptable agronomic characteristics. SunOleic 97R
has about 80% oleic and 2-3% linoleic fatty acids (FA), based on total fat/oil content. This oil
chemistry provides greatly improved shelf-life for seed and products made from this seed, when
compared to Florunner and cultivars with similar oil chemistry. SunOleic 97R is closely related
to SunOleic 95R (1).
SunOleic 97R originates from a BC4F5 selection of a cross between F435-2-2-B-2-1-b4-
B-b2-b3-1-B and a component line of Sunrunner (F519-9), with the latter used as the female
parent (1,4). This is the same cross as SunOleic 95R with one additional backcross on F519-9,
followed by single plant selection. The original parents are both Arachis hypogaea L.,with F435
originating from a 'Florispan' outcross selection. F435 was identified as having 80% oleic FA in
laboratory studies conducted in the mid-1980's. The cross to F519-9 and subsequent backcrosses
were to develop a high oleic runner-type cultivar with acceptable yield and grades (1,4).
After successive crossing, backcrossing, FA analysis of the seed, and plant selection for
desirable agronomic characteristics, plot bulks were made in the BC4F,-F9 to provide seed for
yield testing. SunOleic 97R originates from a bulk of those lines (F1334, 93Q5, and 93Q10).
These lines were tested at multiple locations in Florida during 1993-96 and at multiple locations in
the USA in 1996.
SunOleic 97R plants have a runner growth habit and foliage color similar to Florunner
and Sunrunner, with plump, rounded to somewhat-elongated seed that have a pink testa (seed
coat). The pods and seed of SunOleic 97R mature at approximately the same time as Florunner
(135-140 days) in Florida and are similar in appearance to seed of Sunrunner (4).
SunOleic 97R has no documented disease or pest resistance but appears to resist or
tolerate tomato spotted wilt virus (TSWV) better than SunOleic 95R based on Florida data.
'University of Florida, North Florida Research and Education Center, Marianna, FL
2North Carolina State University, Crop Science Department, Raleigh, NC 27695.
A good disease and pest management program, similar to current recommendation for most
peanut cultivars, is needed for this variety (1,4).
Yield and quality
The average pod yields and grades for SunOleic 97R are given in Table 1, as reported
from 10 tests grown at Marianna and Gainesville, Florida (1993-95). Pod yield data indicate
almost a 10% yield advantage for SunOleic 97R over Florunner and almost a 14% yield
advantage over SunOleic 95R. Data on seed size (100 seed weight and % ELK) indicate that
SunOleic 97R is between Florunner and SunOleic 95R. SunOleic 97R does not have as many
split pods at maturity as found in SunOleic 95R (1).
A preliminary study at Marianna in 1996 was inoculated with S. rolfsii (white mold) gave
pod yield and disease data on two of the component lines of SunOleic 97R (F1334 and 93Q10)
indicating that the F1334 may be somewhat more tolerant to white mold than most other runner-
type cultivars. Additional studies are needed to confirm these results.
SunOleic 97R is released to provide the improved oil chemistry found in SunOleic 95R,
but with better yields and grades. Table 2 gives the oil and fatty acid composition of SunOleic
97R compared to Florunner and SunOleic 95R (1).
Oil chemistry for SunOleic 97R is equal to or better than for SunOleic 95R. This
dramatic improvement in oil chemistry, compared to Florunner, should translate into significantly
better shelf-life for SunOleic 97R peanuts and peanut products when compared to most other
currently available cultivars (1,3,6). Taste panel evaluations and chemical lab tests for oxidation
support this hypothesis. Oxidation studies indicate a potential of 3-15 fold increase in shelf-life
for SunOleic 97R when compared to Florunner (1,3,6,7).
As previously reported for SunOleic 95R, this high oleic/ low linoleic chemistry in
peanuts has shown the potential to help lower LDL blood cholesterol in humans with that
problem (5). Also, consumption of peanuts with this oil chemistry was shown to increase the
monosaturates in the fat and blood of swine in a University of Florida study (2). These are all
potentially desirable benefits from high oleic peanuts.
SunOleic 97R has a pending USDA plant variety protection certificate and is registered
to be sold only as a class of certified seed in the US market. The University of Florida has a
pending utility patent on the high oleic (74-84%) FA chemistry in peanuts. All production of
SunOleic 97R must be grown under contract through Florida Foundation Seed Producers, Inc.,
which has trademarked the word SUNOLEIC and is the designated agent for the Agricultural
Experiment Station, University of Florida (IFAS) for this cultivar. Inquiries should be directed to
Florida Foundation Seed Producers, P.O. Box 309, Greenwood, FL 32443.
The authors wish to express appreciation to the Florida peanut growers, the Florida
Peanut Advisory Council, Florida Foundation Seed Producers, American Peanut Shellers
Association, and Mr. Richard Barber, for their financial support for this research. We also want
to thank M&M Mars (Charles Ivy, Dr. Doug Manning, Dr. L.J. Romanczyk), Planters-LifeSavers
Company (Dr. Doug Smyth), AgraTech (Dr. Kim Moore), Hunt-Wesson (Dr. Bob Sacher), and
Walt Mozingo for support data. Special thanks go to Carlton Adams, Wayne Branch, Mike
Bordelon, Charles Bryant, Frank Harris, Todd Mathews, Harry Woods, Mary Chambliss, Ned
Stevens, Dr. Ben Whitty, George Person, and numerous others for their dedicated technical
1. Knauft, D.A., D.W. Gorbet, and A.J. Norden. 1995. SunOleic 95R Peanut. FL Agric.
Expt. Stn. Cir. S-398.
2. Myer, R.O., D.D. Johnson, D.A. Knauft, D.W. Gorbet, J.H. Brendemuhl, and W.R. Walker.
1992. Effect of feeding high-oleic acid peanuts to growing-finishing swine on resulting fatty
acid profile and on carcass meat quality characteristics. J. Anim.. Sci. 70:3734-3741.
3. Mugendi, J.B. 1996. Flavor quality and stability of high oleic peanuts. M.S. Thesis. U.F.
4. Norden, A.J., D.W. Gorbet, and D.A. Knauft. 1985. Registration of Sunrunner peanut. Crop
5. O'Bryne, D.J., R.B. Shireman, and D.A. Knauft. 1993. The effects of a low fat/high oleic
acid diet on lipoproteins in postmenopausal hypercholesterolemic women. Proc. 84th
American Oil Chemist Society Annual Meeting.
6. O'Keefe, S.F., V.A. Wiley, and D.A. Knauft. 1993. Comparison of oxidation stability of
high- and normal-oleic peanut oils. JAOCS. 70:489-492.
7. Smyth, D.A., C. Macku, J. Gogerty, O.E. Holloway, and D.W. Gorbet. 1995. Enhanced
roasted peanut stability in the high oleic acid breeding lines. Proc. APRES. 27:48 (Abstract).
Table 1. Yield and grade data of SunOleic 97R in Florida Tests (1993-95).
pod yield TSMK 100-seed ELK Split pods Oleic FA
Cultivar lb/A % wt.(g) % % %
SunOleic 97R 4800 80.0 65.6 22.5 0.5 81.8
SunOleic 95R 4211 78.1 65.6 28.5 5.4 80.1
Florunner 4366 79.8 63.3 15.0 3.0 57.5
Table 2. Oil chemistry of SunOleic 97R compared to Florunner and SunOleic 95R from tests at
Marianna and Gainesville, FL (1993-95).
Fatty acid content* O/L Iodine
Cultivar Oil Oleic (18:1) Linoleic (18:2) ratio value
SunOleic 97R 48.5 81 3 27.0 76
SunOleic 95R 49.1 79 5 15.8 78
Florunner 48.3 54 25 2.2 93
*Data based on total fat content from 10 tests.