Abstract
The purpose of this study was to obtain thrips injury data on Upland cotton varieties currently planted in the Southeast and to associate the effects of the injury with yield. Yield and thrips injury data were obtained on 16 varieties at Experiment, Georgia, in 1960, and thrips injury data on 12 varieties at Jackson, Georgia, in 1961. In 1960, a highly significant (P=.01) negative correlation (0.52) between yield and injury‐index was obtained. The linear regression showed a decrease of 392 pounds seed cotton per acre for each unit increase in thrips injury‐index. A highly significant correlation (0.73) between the 1960 and 1961 thrips injury‐index data was obtained. The order of rank of thrips resistance for varieties tested was ‘Empire,’ ‘DeKalb 108,’ ‘Dixie King,’ ‘Rex,’ ‘Auburn 56,’ ‘Plains,’ ‘Stoneville 7,’ ‘Coker 100A,’ and ‘Deltapine 15.’ Empire and varieties having Empire in their genetic background exhibited more resistance to thrips injury than did other varieties. The value of Empire genes in a cotton breeding program for thrips resistance is pointed out.
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Claims 6
Claim · model-written summary
In 1960, thrips injury index and yield were negatively correlated (0.52) in upland cotton.
ThripsOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“obtain thrips injury data on Upland cotton varieties”
e1“In 1960, a highly significant (P=.01) negative correlation (0.52) between yield and injury”
Claim · model-written summary
Each unit increase in thrips injury index was associated with a decrease of 392 pounds of seed cotton per acre.
- Taxon
- Upland cottone0
- Outcome
- seed cotton per acree1
- Direction
- decreasee1
- Value
- 392 poundse1
- Qualifier
- for each unit increase in thrips injurye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“obtain thrips injury data on Upland cotton varieties”
e1“The linear regression showed a decrease of 392 pounds seed cotton per acre for each unit increase in thrips injury”
Claim · model-written summary
The thrips injury index correlated highly significantly (0.73) between 1960 and 1961.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“obtain thrips injury data on Upland cotton varieties”
e1“A highly significant correlation (0.73) between the 1960 and 1961 thrips injury”
Claim · model-written summary
Upland cotton varieties were ranked for thrips resistance.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“obtain thrips injury data on Upland cotton varieties”
e1“The order of rank of thrips resistance for varieties tested”
Claim · model-written summary
Empire and varieties with Empire in their genetic background showed more resistance to thrips injury than other varieties.
- Taxon
- Upland cottone0
- Material
- Empiree1
- Outcome
- resistance to thrips injurye1
- Direction
- more resistancee1
- Comparator
- other varietiese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“obtain thrips injury data on Upland cotton varieties”
e1“Empire and varieties having Empire in their genetic background exhibited more resistance to thrips injury than did other varieties”
Claim · model-written summary
The authors recommend using Empire genes in cotton breeding for thrips resistance.
- Taxon
- cotton
Gossypium hirsutume1 - Outcome
- Empire genes in a cotton breeding program for thrips resistancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The value of Empire genes in a cotton breeding program for thrips resistance is pointed out”