Abstract
Four treatment leveles(check 500, 1, 000 2, 000ppm) of Ethrel were applied to barley and wheat grown in greenhouse and fields at three stages (preboot, boot, afterboot) of growth in orderd to induce male sterility and to evaluate possibility of practical -hybrid-seed production as gametocide. The results are summarized as follows. 1. The shortening plant height, especially the first internode length. spike length and decreasing 1, 000 seeds weight and induction of male sterility, were observed with all Ethrel theatments. The earier the stage of spraying at the boot and the higher concentration of Ethrel, the greater effects were observed. 2. The most practical level of inducing male sterility occurred ranging from 1, 000-2, 000ppm applied at all stages, while with increasing maturity, greater concentration of Ethrel were required to induce the same level of male sterility. .3. Great differences for male sterility per spike in bagged and unbagged spikes were shown with all treatments indicated ovary receptiveness, and that out-crossing has taken place, 4. Ethrel treatment induced more practicable extent of male sterility in barley than wheat. This results indicated that -hybrid-seed production in barley with gametocide appears feasible if high combining ability lines were selected for increased out-crossing ratio. 5. There seemed to be no indication of additive surfactant influence on the Ehrel action in the present studies, and showed an interest on further studies on this matter.
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Claims 8
Claim · model-written summary
Ethrel shortened plant height and first internode and spike length.
- Taxon
- Barley and Wheat
.jpg?width=60)
Hordeum vulgare
Triticum aestivumt0 - Treatment
- Ethrele0
- Outcome
- plant height, especially the first internode length. spike lengthe0
- Direction
- shorteninge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Barley and Wheat”
e0“The shortening plant height, especially the first internode length. spike length and decreasing 1, 000 seeds weight and induction of male sterility, were observed with all Ethrel theatments”
Claim · model-written summary
Ethrel decreased thousand-seed weight.
- Taxon
- Barley and WheatHordeum vulgareTriticum aestivumt0
- Treatment
- Ethrele0
- Outcome
- 1, 000 seeds weighte0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barley and Wheat”
e0“decreasing 1, 000 seeds weight and induction of male sterility, were observed with all Ethrel theatments”
Claim · model-written summary
Ethrel induced male sterility, with stronger effects at earlier application and higher concentration.
- Taxon
- Barley and WheatHordeum vulgareTriticum aestivumt0
- Treatment
- Ethrele0
- Outcome
- male sterilitye0
- Direction
- greatere0
- Qualifier
- earier the stage of spraying at the boote0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barley and Wheat”
e0“induction of male sterility, were observed with all Ethrel theatments. The earier the stage of spraying at the boot and the higher concentration of Ethrel, the greater effects were observed”
Claim · model-written summary
The practical male-sterility range was 1, 000-2, 000ppm; later maturity required greater concentration.
- Taxon
- Barley and WheatHordeum vulgareTriticum aestivumt0
- Treatment
- Ethrele0
- Outcome
- male sterilitye0
- Value
- 1, 000-2, 000ppme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barley and Wheat”
e0“The most practical level of inducing male sterility occurred ranging from 1, 000-2, 000ppm applied at all stages, while with increasing maturity, greater concentration of Ethrel were required”
Claim · model-written summary
Bagged and unbagged spikes differed in male sterility per spike, indicating outcrossing.
- Taxon
- Barley and WheatHordeum vulgareTriticum aestivumt0
- Outcome
- male sterility per spikee0
- Comparator
- unbagged spikese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barley and Wheat”
e0“Great differences for male sterility per spike in bagged and unbagged spikes were shown with all treatments indicated ovary receptiveness, and that out-crossing has taken place”
Claim · model-written summary
Ethrel induced more practical male sterility in barley than wheat.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- Ethrel treatmente0
- Outcome
- male sterilitye0
- Direction
- more practicablee0
- Comparator
- wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethrel treatment induced more practicable extent of male sterility in barley than wheat”
Claim · model-written summary
The authors considered barley hybrid-seed production feasible if high-combining-ability lines were selected.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- hybrid-seed productione0
- Qualifier
- if high combining ability lines were selectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hybrid-seed production in barley with gametocide appears feasible if high combining ability lines were selected for increased out-crossing ratio”
Claim · model-written summary
An added surfactant showed no apparent influence on Ethrel action.
- Taxon
- Barley and WheatHordeum vulgareTriticum aestivumt0
- Treatment
- additive surfactante0
- Outcome
- Ehrel actione0
- Direction
- no indicatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Barley and Wheat”
e0“There seemed to be no indication of additive surfactant influence on the Ehrel action”
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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.