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Okra Varieties Vary in Pod Shear Force

Jim E. Wyatt and Emily W. Gatch

 

Okra pods are edible for a relatively short time after which the pods become too tough and fibrous for consumption. This study was conducted to determine if okra cultivars differ in rate of pod development to identify cultivars that produce large pods with lower shear strength. Eleven okra cultivars and hybrids were planted on May 14, 2003. Plots were over seeded and plants were thinned to an in-row spacing of about 1 fr. The experimental design was a randomized complete block with four reps. Harvest began on July 7. To obtain pods of known maturity, flowers were tagged on the day of anthesis(DOA) and pods were harvested at on day intervals for four days beginning at DOA + 4. Shear strength was measured on a Model T -1200-G Texture Test System using a Model CS-1 Standart Shear-Compression Cell with 10 blades. If pods were over 2 ½ inches long, the proximal 2 ½ inches were used for shear measurements.

‘North and South’ and ‘Cajun Delight’ had the highest yields in the test (Table1). ‘Star of David’, ‘Clemson spineless’ and ;Clemson Spineless 80' had the largest pods. In general, ‘Star of David’ and ‘Silver Queen’ had pods with the lowest shear force and required the least pot removal force.

Table 1. Pod yield and mean pod weight, shear force, and removal ratings on 11 okra cultivars and hybrids.

 

Cultivar

 

Total yield (lbs)

 

Mean pod wt (oz)

Pod shear force (lbs)

Pod snap
ratingY
(1-5)

 

 

 

DOAZ +4

DOA +5

DOA + 6

DOA +7

 

Cajun Delight

9649abX

0.45g

164bc

265b

345bc

468ab

4.8ab

Burgundy

5477e

0.53cd

191ab

261b

375ab

360c

4.9a

Star of David

5157e

0.61a

121d

198c

243d

430b

1.5e

Silver Queen

8035bcd

0.57abc

117d

211c

285cd

324c

1.6e

Clemson Spineless

8788bc

0.60a

212a

317a

405ab

477ab

3.4c

Clemson Spineless 80

8888bc

0.59ab

191ab

332a

436a

514a

2.6d

Dwarl Long Green Pod

6498de

0.52de

198ab

321a

397ab

465ab

4.2abc

Annie Oakley II

8704bc

0.45g

150cd

259b

338bc

419b

3.8c

Green Best

7997bcd

0.49ef

184abc

276b

369b

514a

4.0bc

North and Soutn

10487a

0.48fg

167bc

271b

353b

434b

4.0bc

Perkings Dwarf

7822cd

0.56bcd

187abc

265b

340bc

435b

3.4c

Z Day of anthesis + 4, +5, +6, and +7 succeeding days.
Ysubjective rating on ease of pod removal at DOA +6: 1=pod snamp off easily; 5=pdo requires cutting
XMeans followed by the same letter are not significantly different, Duncan’s multiple range test (P# 0.05) 


Copyright © 1999 by The University of Tennessee. All rights reserved.

This research represents one season's data and does not constitute recommendations.  After sufficient data is collected over the appropriate number of seasons, final recommendations will be made through research and extension publications.

 

 

 

 

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