Abstract
DOR: 98.1000/2383-1251.1397.5. 43.10.2.1575.32 Extended abstract Introduction: Today, various technologies have been developed to improve seed quality with the aim of increasing the percentage, speed and uniformity of germination and improved seedling establishment under different environmental conditions. One of these technologies is seed pre-treatment or seed priming. In this regard, some studies confirmed that pre-treatment of seeds with hormones and plant growth regulators improve germination behavior and its related indices, including average germination time, seed vigor, radicle length, plumule length, germination rate and seedling establishment in primed seeds of sesame. Cognizant of the sensitivity of the germination process as the first plant developmental stage and the importance of improving germination indices and sesame seedling establishment, the aim of this study was to evaluate the seed priming efficiency, using salicylic acid, methyl jasmonate and humic acid in the germination performance, biochemical changes and early seedling growth of two sesame cultivars including Yellow white and local cultivar of Dezful. Materials and Methods: This experiment was conducted as a factorial based on a completely randomized design with four replications in the seed technology Laboratory of Safi Abad Dezful Agricultural Research Center in the summer of 2015. The first factor was seed pre-treatment with distilled water (control), salicylic acid 0.1mM, methyl jasmonate 1µM, and humic acid 1.5% and the second factor was two varieties of sesame including Yellow white and the local cultivar of Dezful. Germination percentage, germination rate, seed vigor index, radicle length, plumule length, allometric coefficient, proline content, soluble proteins and catalase enzyme activity were determined to compare the treatments. Results: The results of the experiment showed that seeds priming had a significant effect on germination percentage, germination rate, seed vigor index, radicle length, plumule length, allometric coefficient and seedling biochemical changes, and improved them. The effect of cultivar on all the traits studied, except mean daily germination and plumule length, was not significant. In this research, the Dezful cultivar had an average of 13.52 seeds per day with higher germination rates, compared with the other cultivar (Yellow white). In addition, the interaction of priming × cultivar was significant only in seed vigor index and allometric coefficient, where the comparison of the mean values indicated that the highest seed vigor was obtained by using humic acid 1.5% in the Dezful cultivar (10.09), while the highest allometric coefficient in seed pre-treatment with methyl jasmonate was found in the Yellow white cultivar (1.57). Conclusions: In this study, the most effective seed priming treatments for improving germination, biochemical changes and seedling growth of sesame was humic acid 1.5%, recorded for the local cultivar of Dezful. Seed priming with humic acid 1.5% was significantly better than the control and Dezful cultivar’s germination performance was better than that of Yellow white cultivar; therefore it can be said that pre-treatment of seed with humic acid with significant effects on germination characteristics of sesame can be more effective in establishment of seedlings. It is advisable to use this organic acid for better root system development and sesame seedlings establishment, which is a major problem at the beginning of the growing season. Highlights: Humic acid was the most effective seed priming treatment on germination characteristics, biochemical changes and seedlings growth of sesame. The effect of seed priming treatments on the germination characteristics of the Dezful cultivar was more pronounced than that of Yellow white.
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Claims 14
Claim · model-written summary
Seed priming significantly improved germination percentage, rate and seed vigor index.
- Taxon
- Sesame (Sesamum indicum)
Sesamum indicumt0 - Treatment
- seeds priminge0
- Outcome
- germination percentage, germination rate, seed vigor indexe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds priming had a significant effect on germination percentage, germination rate, seed vigor index, radicle length, plumule length, allometric coefficient and seedling biochemical changes, and improved them.”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
Seed priming significantly improved radicle length, plumule length and allometric coefficient.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Treatment
- seeds priminge0
- Outcome
- radicle length, plumule length, allometric coefficiente0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds priming had a significant effect on germination percentage, germination rate, seed vigor index, radicle length, plumule length, allometric coefficient and seedling biochemical changes, and improved them.”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
Seed priming significantly improved seedling biochemical changes.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Treatment
- seeds priminge0
- Outcome
- seedling biochemical changese0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds priming had a significant effect on germination percentage, germination rate, seed vigor index, radicle length, plumule length, allometric coefficient and seedling biochemical changes, and improved them.”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
Cultivar had no significant effect on studied traits except mean daily germination and plumule length.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Material
- cultivare0
- Outcome
- all the traits studiede0
- Direction
- not significante0
- Qualifier
- except mean daily germination and plumule lengthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of cultivar on all the traits studied, except mean daily germination and plumule length, was not significant.”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
Dezful had higher germination rates than Yellow white, averaging 13.52 seeds per day.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Material
- Dezful cultivare0
- Outcome
- germination ratese0
- Direction
- highere0
- Value
- 13.52 seeds per daye0
- Comparator
- Yellow whitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Dezful cultivar had an average of 13.52 seeds per day with higher germination rates, compared with the other cultivar (Yellow white).”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
The priming by cultivar interaction was significant for seed vigor index.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Material
- cultivare0
- Treatment
- priminge0
- Outcome
- seed vigor indexe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the interaction of priming × cultivar was significant only in seed vigor index and allometric coefficient”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
The priming by cultivar interaction was significant for allometric coefficient.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Material
- cultivare0
- Treatment
- priminge0
- Outcome
- allometric coefficiente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the interaction of priming × cultivar was significant only in seed vigor index and allometric coefficient”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
Humic acid 1.5% in Dezful gave the highest seed vigor, 10.09.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Material
- Dezful cultivare0
- Treatment
- humic acid 1.5%e0
- Outcome
- seed vigore0
- Direction
- higheste0
- Value
- 10.09e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest seed vigor was obtained by using humic acid 1.5% in the Dezful cultivar (10.09)”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
Methyl jasmonate pretreatment in Yellow white gave the highest allometric coefficient, 1.57.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Material
- Yellow white cultivare0
- Treatment
- seed pre-treatment with methyl jasmonatee0
- Outcome
- allometric coefficiente0
- Direction
- higheste0
- Value
- 1.57e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest allometric coefficient in seed pre-treatment with methyl jasmonate was found in the Yellow white cultivar (1.57)”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
Humic acid 1.5% was the most effective priming treatment for germination, biochemical changes and seedling growth in Dezful.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Material
- local cultivar of Dezfule0
- Treatment
- humic acid 1.5%e0
- Outcome
- germination, biochemical changes and seedling growthe0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the most effective seed priming treatments for improving germination, biochemical changes and seedling growth of sesame was humic acid 1.5%, recorded for the local cultivar of Dezful.”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
Humic acid 1.5% significantly outperformed the control in germination performance.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Treatment
- humic acid 1.5%e0
- Outcome
- significantly bettere0
- Direction
- bettere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed priming with humic acid 1.5% was significantly better than the control”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
Dezful germination performance exceeded Yellow white.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Material
- Dezful cultivare0
- Outcome
- germination performancee0
- Direction
- bettere0
- Comparator
- Yellow white cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dezful cultivar’s germination performance was better than that of Yellow white cultivar”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
Priming effects on germination characteristics were more pronounced in Dezful than Yellow white.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Material
- Dezful cultivare0
- Treatment
- seed priming treatmentse0
- Outcome
- germination characteristicse0
- Direction
- more pronouncede0
- Comparator
- Yellow whitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of seed priming treatments on the germination characteristics of the Dezful cultivar was more pronounced than that of Yellow white.”
t0“Sesame (Sesamum indicum)”
Claim · model-written summary
The authors advise humic acid priming for root development and seedling establishment.
- Taxon
- Sesame (Sesamum indicum)Sesamum indicumt0
- Outcome
- use this organic acid for better root system development and sesame seedlings establishmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is advisable to use this organic acid for better root system development and sesame seedlings establishment”
t0“Sesame (Sesamum indicum)”
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