S.W.E.A.T. - SPOTTED WILT ERADICATION ACTION TEAM

Marianna NFREC Research Report 99-2

C-99R - A NEW MULTIPLE DISEASE RESISTANT
PEANUT CULTIVAR

TABLES 1-10
Scroll down to desired Table.

Table 1. Comparison of pod yield, grade, and disease
data for C-99R and check varieties in unsprayed (leafspot)
tests at Marianna, FL, 1993-98

Entry Yield
(lbs/A) %TSMK %ELK 100 Seed
wt. (g) Leaf
spot
disease
(1-10)

C-99r 3449 80.4 29.0 70.4 5.9

Southern Runner 3215 79.6 8.9 55.2 5.1

Fla. MDR 98 3265 81.2 33.5 67.6 4.5

Data reported the average of 10 tests at Marianna.
TSMK = total sound mature kernels or seed riding a 16/64th inch screen
ELK = extra large kernels or seed riding a 21.5/64th inch screen.
100 seed wt. = weight in grams of 100 sound mature seed.
Disease rating for leafspot on Florida 1-10 scale, where 1 = no disease

Table 2. Pod yield, grade, and disease data on
C-99R from sprayed vs. vs unsprayed treatments in tests at Marianna and Gainesville, FL (1995-98)

Location/ Yield
(lbs/A) Yield
(lbs/A) %TSMK %TSMK %ELK %ELK 100 Seed
wt. (g) 100 Seed
wt. (g) Disease
(1-10) Disease
(1-10)

Entry U Sp U Sp U Sp U Sp U Sp

Marianna

C-99R 3624 4775 79.8 79.9 34.4 39.3 72.5 75.6 4.9 3.2

South. Runner 2397 3829 79.2 78.8 9.9 13.3 56.2 56.7 4.5 3.2

Fla. MDR-98 3521 4639 80.9 80.9 33.2 38.8 67.0 69.0 3.9 3.1

Gainesville

C-99R 3680 4579 78.1 80.0 35.1 51.7

South. Runner 3059 3886 76.9 78.7 16.8 26.6

Fla. MDR-98 2954 3702 78.4 81.2 41.0 49.1

U = unsprayed, Sp = sprayed (Bravo, 2 Folicur, Bravo)
Disease rating prior to digging (1-10), where 1=no disease

Table 3. Effect of peanut genotype on final incidence of spotted wilt, final spotted wilt intensity ratings, and pod yields in experiments in Attapulgus, Georgia and Marianna, Florida in 1994 and 1995.

Location/Entry Final
Disease
Incidence Final
Disease
Incidence Final
Disease
Incidence Final
Disease
Intensity Rating Final
Disease
Intensity Rating Final
Disease
Intensity Rating Yield (lbs/A) Yield (lbs/A) Yield (lbs/A)

1994 1995 Avg. 1994 1995 Avg. 1994 1995 Avg.

Attapulgus

Florunner 27.0 51.1 39.1 35.4 41.3 38.3 3430 3001 -

South. Runner 15.5 29.5 22.5 10.4 12.5 11.5 3019 3806 -

C-99R 14.9 27.6 21.3 10.4 12.9 11.7 2988 3848 -

Fla MDR 98 22.3 28.8 25.5 13.3 12.1 12.7 3189 3958 -

NC-V11 16.1 44.2 30.2 14.6 27.9 21.3 2886 3346 -

LSD (p<0.05) 9.4 7.1 NS 393 -

Marianna

Florunner 28.0 86.7 57.4 36.3 79.6 - 3977 2171 3074

South. Runner 11.4 72.4 41.9 11.7 46.3 - 4527 3276 3902

C-99R 9.3 44.6 27.0 6.7 20.0 - 5396 4611 5004

Fla MDR 98 14.7 62.6 38.7 11.7 27.5 - 4837 3733 4285

NC-V11 13.8 78.9 46.3 - - - 4059 3950 3505

LSD (p<0.05) 12.1 5.2 14.2 371

Percentage of the total plant population with symptoms of tomato spotted wilt.
Percentage of the total row length with plants severely affected by spotted wilt.
There were no significant (P > 0.05) year by genotype interaction effects for values in the column.

Table 4. Field response for C-99R to TSWV in Georgia and Florida Tests (1997-1998).

TSWV
Intensity TSWV
Intensity TSWV
Intensity Yield
(lbs/A) Yield
(lbs/A)

Entry GA FL Avg. GA FL

1997

C-99R 34.6 25.4 30.0 2754 4823

Georgia Runner 85.4 87.1 86.3 1205 1758

Georgia Green 44.6 46.5 45.3 1732 3393

LSD (p=0.05) - - 9.2 430 609

1998

C-99R 28.3 36.3 32.3 5383 4627

Georgia Runner 81.7 89.6 85.6 2628 2362

Georgia Green 50.8 65.0 57.9 4081 3303

LSD (p=0.05) - - 9.2 430 506

Ratings represent the percentage of linear row with severe symptoms of spotted wilt
determined immediately prior to digging.

Table 5. TSWV resistance x planting date x spacing studies
for C-99R (1996-97).

Yield
(lbs/A) Yield
(lbs/A) Yield
(lbs/A) %
TSMK %
TSMK %
TSMK TSWV
(1-10) TSWV
(1-10) TSWV
(1-10)

Location Row
Spacing 3 6 12 3 6 12 3 6 12

Marianna April
Planting

Florunner 3426 2943 2188 75.8 75.6 75.2 5.0 6.2 6.4

South. Runner 4328 4105 3231 75.6 75.5 74.8 3.1 3.5 4.0

C-99R 5240 4873 4480 76.9 76.6 75.5 2.7 2.8 3.1

Marianna May
Planting

Florunner 4276 3639 3001 78.7 79.6 78.4 4.1 5.0 5.5

South. Runner 5176 5067 4192 77.8 77.9 77.5 2.5 3.1 3.2

C-99R 6216 5732 5022 78.4 78.8 78.2 2.3 2.4 2.7

Gainesville April
Planting

Florunner 4252 4252 3299 76.2 75.2 71.1

South. Runner 5214 4756 4497 75.3 75.2 73.7

C-99R 5890 5781 5132 77.4 75.9 77.1

Gainesville May
Planting

Florunner 4674 4547 3916 75.8 76.0 77.6

South. Runner 5296 4933 4588 78.0 77.6 78.2

C-99R 5764 5223 4633 79.8 77.5 79.2

Disease ratings made prior to digging, 1-10, 1 = no disease (TSWV).
Row spacing is 3, 6, and 12 inch spacings between plants in a row.

Table 6. Comparison of C-99R with check data from
four sprayed (leafspot) Gainesville tests (1994-1998).

Entry Yield
(lbs/A) %
TSMK %ELK 100 sd. wt
(g)

C-99R 5373 80.1 56.4 76.6

Southern Runner 4735 77.8 28.1 61.9

Fla. MDR 98 4981 80.7 51.7 71.1

Florunner 3939 79.5 23.9 58.9

Table 7. Comparison of C-99R with check varieties when
inoculated with S. rolfsii (white mold) at Marianna (1996-1998).

Entry Yield
(lbs/A) %
TSMK %ELK 100 sd. wt
(g) Disease
Rating
(1-10)

C-99R 4282 76.9 30.4 69.2 3.0

Southern Runner 3385 76.4 11.4 53.6 3.7

Fla. MDR 98 4206 79.5 35.1 69.3 2.8

Table 8. Yields and disease ratings of five varieties
in paired row studies on resistance to
white mold at Marianna (1997-1998).

Yield
(lbs/A) Yield
(lbs/A) Disease
Rating
1-10 Disease
Rating
1-10

Entry I U I U

C-99R 4299 6080 2.7 1.5

Southern Runner 3841 4890 3.0 1.7

Fla. MDR 98 4141 5327 2.9 1.8

Florunner 1497 3751 5.8 2.4

Ga. Green 2196 4914 3.2 2.2

I = Inoculated with Sclerotium rolfsii, U = Uninoculated.
Disease data is for 1997, 1 = no disease for the 1-10 scale.

Table 9. Performance of C-99R compared to Florunner
in the Southeast Uniform Peanut Performance Tests (1996-97).

Pod
Yield
(lbs/A) Pod
Yield
(lbs/A) %
TSMK %
TSMK 100 Seed
wt (g) 100 Seed
wt (g)

Location/year C-99R Florunner C-99R Florunner C-99R Florunner

1996

GA 5290 4095 76.5 74.5 70.0 52.2

AL 5490 5273 72.9 75.0 64.3 55.0

Mar 5820 3744 78.2 78.2 73.9 59.4

Jay 5917 4538 - - - -

SE Avg. 5629 4413 75.9 75.9 69.4 55.5

1997

GA 3850 2283 66.4 69.1 66.8 51.4

AL 5454 4012 72.8 73.6 76.9 62.1

Mar 3872 1395 77.1 75.5 75.4 65.5

Jay 3875 4383 - - - -

SE Avg. 4263 3018 72.1 72.7 73.0 59.7

Table 10. Comparison of oil chemistry data
for C-99R and three check varieties (1993-97).

Fatty Acid Data (%)

Entry Palmitic (16:1) Oleic (18:1) Linoleic (18:2)

C-99R 9.5 57.2 22.9

Florunner 9.9 52.9 27.5

South. Runner 9.2 57.3 22.7

Fla. MDR-98 8.3 63.9 16.8

For more information on any of these or related topics,
contact Albert Culbreath by phone (912) 386-3370, fax (912) 386-7285 or email (spotwilt@tifton.cpes.peachnet.edu).

C-99R - A NEW MULTIPLE DISEASE RESISTANT PEANUT CULTIVAR

TABLES 1-10 Scroll down to desired Table.

Table 1. Comparison of pod yield, grade, and disease data for C-99R and check varieties in unsprayed (leafspot) tests at Marianna, FL, 1993-98

Table 2. Pod yield, grade, and disease data onC-99R from sprayed vs. vs unsprayed treatments in tests at Marianna and Gainesville, FL (1995-98)

Table 3. Effect of peanut genotype on final incidence of spotted wilt, final spotted wilt intensity ratings, and pod yields in experiments in Attapulgus, Georgia and Marianna, Florida in 1994 and 1995.

Table 4. Field response for C-99R to TSWV in Georgia and Florida Tests (1997-1998).

Table 5. TSWV resistance x planting date x spacing studies for C-99R (1996-97).

Table 6. Comparison of C-99R with check data from four sprayed (leafspot) Gainesville tests (1994-1998).

Table 7. Comparison of C-99R with check varieties when inoculated with S. rolfsii (white mold) at Marianna (1996-1998).

Table 8. Yields and disease ratings of five varieties in paired row studies on resistance to white mold at Marianna (1997-1998).

Table 9. Performance of C-99R compared to Florunner in the Southeast Uniform Peanut Performance Tests (1996-97).

Table 10. Comparison of oil chemistry data for C-99R and three check varieties (1993-97).

C-99R - A NEW MULTIPLE DISEASE RESISTANT
PEANUT CULTIVAR

TABLES 1-10
Scroll down to desired Table.

Table 1. Comparison of pod yield, grade, and disease
data for C-99R and check varieties in unsprayed (leafspot)
tests at Marianna, FL, 1993-98

Table 2. Pod yield, grade, and disease data on
C-99R from sprayed vs. vs unsprayed treatments in tests at Marianna and Gainesville, FL (1995-98)

Table 5. TSWV resistance x planting date x spacing studies
for C-99R (1996-97).

Table 6. Comparison of C-99R with check data from
four sprayed (leafspot) Gainesville tests (1994-1998).

Table 7. Comparison of C-99R with check varieties when
inoculated with S. rolfsii (white mold) at Marianna (1996-1998).

Table 8. Yields and disease ratings of five varieties
in paired row studies on resistance to
white mold at Marianna (1997-1998).

Table 9. Performance of C-99R compared to Florunner
in the Southeast Uniform Peanut Performance Tests (1996-97).

Table 10. Comparison of oil chemistry data
for C-99R and three check varieties (1993-97).