Abstract
Abstract The objective of the present research was to develop an effective and practical method for hybrid seed production in safflower, by inducing male sterility with gibberellic acid (GA 3 ). Seeds of the spiny line ‘5‐154’ and the non‐spiny variety ‘Dincer 5‐118’ were sown in alternate rows and the plants of the non‐spiny female variety were exposed to various concentrations of GA 3 for male sterility induction. Three successive sprays (75, 82 and 89 days after sowing) of 100 p.p.m. of GA 3 to safflower buds of <0.5 cm diameter at a pre‐meiotic interphase stage resulted in reduced pollen viability from 81.6‐6.7% compared with the control. An average hybrid seed percentage of 80.7% (87.5% in the secondary heads), identified by the use of the spiny‐capitulum marker variety ‘5‐154′, was obtained. The GA 3 treatments did not significantly affect the production of viable achenes. The results showed that GA 3 could be successfully used as a chemical hybridizing agent in hybrid safflower production.
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Claims 5
Claim · model-written summary
Three successive sprays of 100 p.p.m. GA3 on safflower buds reduced pollen viability from 81.6 to 6.7% compared with the control.
- Taxon
- safflower
Carthamus tinctoriuse1 - Organ / stage
- budse1
- Treatment
- Three successive sprays (75, 82 and 89 days after sowing) of 100 p.p.m. of GA 3e1
- Outcome
- pollen viabilitye1
- Direction
- reducede1
- Value
- 81.6‐6.7%e1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Three successive sprays (75, 82 and 89 days after sowing) of 100 p.p.m. of GA 3 to safflower buds of <0.5 cm diameter at a pre‐meiotic interphase stage resulted in reduced pollen viability from 81.6‐6.7% compared with the control”
Claim · model-written summary
An average hybrid seed percentage of 80.7% was obtained in GA3-treated safflower.
- Taxon
- safflowerCarthamus tinctoriust0
- Outcome
- hybrid seed percentagee1
- Value
- 80.7%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“safflower (Carthamus tinctorius)”
e1“An average hybrid seed percentage of 80.7% (87.5% in the secondary heads)”
Claim · model-written summary
The hybrid seed percentage in the secondary heads of safflower was 87.5%.
- Taxon
- safflowerCarthamus tinctoriust0
- Organ / stage
- secondary headse1
- Outcome
- hybrid seed percentagee1
- Value
- 87.5%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“safflower (Carthamus tinctorius)”
e1“An average hybrid seed percentage of 80.7% (87.5% in the secondary heads)”
Claim · model-written summary
The GA3 treatments did not significantly affect the production of viable achenes in safflower.
- Taxon
- safflowerCarthamus tinctoriust0
- Treatment
- GA 3 treatmentse1
- Outcome
- production of viable achenese1
- Direction
- did not significantly affecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“safflower (Carthamus tinctorius)”
e1“The GA 3 treatments did not significantly affect the production of viable achenes”
Claim · model-written summary
The authors conclude that GA3 could be successfully used as a chemical hybridizing agent in hybrid safflower production.
- Taxon
- safflowerCarthamus tinctoriuse1
- Treatment
- GA 3e1
- Outcome
- chemical hybridizing agente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“GA 3 could be successfully used as a chemical hybridizing agent in hybrid safflower production”
The same questions in other papers
Gibberellic acid · yield · Carthamus tinctorius (safflower)Results differ
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
application · yield · Carthamus tinctorius (safflower)Positive and negative results
36 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
34 papers more in this group
See all 38 papers →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.