Abstract
Triticale cultivars were treated with Ethrel (2‐chloroethylphosphonic acid) under greenhouse and field conditions to study the potential of Ethrel to induce sterility. The greenhouse study involved three cultivars (‘Tifton Exp. 8641,’ ‘Fas‐gro 203,’ and ‘Fas‐gro 205’) treated at five chemical rates (0, 500, 1,000, 2,000, and 3,000 ppm) and at two growth stages (mid‐boot and early heading). Spikes were bagged to prevent cross‐pollination. Significant differences in the number of seeds/spike were observed for chemical rate and for date of application. The highest degree of sterility was observed in Tifton Exp. 8641 treated in the boot stage at 3,000 ppm where a mean of two seed/spike was present. Complete sterility was not obtained. The higher rates of Ethrel delayed pollination and reduced plant height of all cultivars. Field applications of Ethrel at rates of 0, 500, 1,000, 1,500, and 2,000 ppm in 1972 and 0, 1.12, and 2.24 kg/ha in 1973 caused no apparent sterility. Bagging of spikes significantly reduced the number of seeds/spike.
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Claims 8
Claim · model-written summary
Ethrel rate significantly affected seeds per spike.
- Taxon
- Triticale
×Triticosecalet0 - Treatment
- chemical ratee0
- Outcome
- number of seeds/spikee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant differences in the number of seeds/spike were observed for chemical rate and for date of application”
t0“Triticale”
Claim · model-written summary
Application date significantly affected seeds per spike.
- Taxon
- Triticale×Triticosecalet0
- Treatment
- date of applicatione0
- Outcome
- number of seeds/spikee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant differences in the number of seeds/spike were observed for chemical rate and for date of application”
t0“Triticale”
Claim · model-written summary
Tifton Exp. 8641 had the highest sterility at boot stage with 3,000 ppm Ethrel, averaging two seeds per spike.
- Taxon
- Triticale×Triticosecalet0
- Material
- Tifton Exp. 8641e0
- Organ / stage
- boot stagee0
- Treatment
- 3,000 ppme0
- Outcome
- degree of sterilitye0
- Direction
- higheste0
- Value
- two seed/spikee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest degree of sterility was observed in Tifton Exp. 8641 treated in the boot stage at 3,000 ppm where a mean of two seed/spike was present”
t0“Triticale”
Claim · model-written summary
Ethrel did not produce complete sterility.
- Taxon
- Triticale×Triticosecalet0
- Outcome
- Complete sterility was not obtainede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Complete sterility was not obtained”
t0“Triticale”
Claim · model-written summary
Higher Ethrel rates delayed pollination.
- Taxon
- Triticale×Triticosecalet0
- Treatment
- higher rates of Ethrele0
- Outcome
- pollinatione0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher rates of Ethrel delayed pollination and reduced plant height of all cultivars”
t0“Triticale”
Claim · model-written summary
Higher Ethrel rates reduced plant height.
- Taxon
- Triticale×Triticosecalet0
- Treatment
- higher rates of Ethrele0
- Outcome
- plant heighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher rates of Ethrel delayed pollination and reduced plant height of all cultivars”
t0“Triticale”
Claim · model-written summary
Field Ethrel applications caused no apparent sterility.
- Taxon
- Triticale×Triticosecalet0
- Treatment
- Field applications of Ethrele0
- Outcome
- sterilitye0
- Direction
- no apparente0
- Setting
- Fielde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field applications of Ethrel at rates of 0, 500, 1,000, 1,500, and 2,000 ppm in 1972 and 0, 1.12, and 2.24 kg/ha in 1973 caused no apparent sterility”
t0“Triticale”
Claim · model-written summary
Bagging spikes significantly reduced seeds per spike.
- Taxon
- Triticale×Triticosecalet0
- Treatment
- Bagging of spikese0
- Outcome
- number of seeds/spikee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bagging of spikes significantly reduced the number of seeds/spike”
t0“Triticale”
The same questions in other papers
(2-chloroethyl)phosphonic acid · growth · x Triticosecale (triticale)Positive and negative results
1 in the opposite direction
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.