Abstract
Plan breeding of wheat and triticale in Argentina is based on the objective of improving an individual crop, with respect to resistance to drought stress. The use of gamma radiation holds promise for physiological crop improvement. The objective of this study was to determine and compare the effect of different gamma radiation doses on the germination and seedling growth of Argentine wheat and triticale cultivars. Seeds of wheat cv. Baguette 10 and triticale cv. Espinillo INTA were irradiated at doses of 0, 50, 200, 400, 550, 700, 850 The final germination percentage (FGP), sprout length (SL) and median lethal dose (LD 50 ) were used as metrics of germination, seedling growth and lethal dose, respectively. Two experimental designs were used. First, a completely randomized factorial was used to compare the effect of the doses within species by using ANOVA; second, a completely repeated measures design was used to evaluate the effect of days after germination on plant survival by species using a mixed linear model. The results suggest that at the early germination stage, gamma radiation limited root growth and stem length. The FGP of wheat seeds was significantly affected by gamma radiation at a dose of 550 Gy, whereas triticale seeds were significantly affected at a dose of 700 Gy. The SL of both species was similarly affected at 50 Gy. The stem mortality of wheat and triticale seeds increased at an increasing gamma radiation dose and days after germination. Finally, the LD 50 value for wheat and triticale seeds was ~450 Gy. These results might be useful to set a benchmark of the effect of the gamma radiation dose to induce mutations in wheat and triticale seeds from Argentine cultivars.
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Claims 6
Claim · model-written summary
At the early germination stage, gamma radiation limited root growth and stem length in wheat and triticale.
- Taxon
- wheat and triticale
Triticum aestivum
×Triticosecalet0 - Organ / stage
- early germination stagee0
- Treatment
- gamma radiatione0
- Outcome
- root growth and stem lengthe0
- Direction
- limitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the early germination stage, gamma radiation limited root growth and stem length”
t0“wheat and triticale cultivars”
Claim · model-written summary
The final germination percentage of wheat seeds was significantly affected by gamma radiation at 550 Gy.
- Taxon
- wheatTriticum aestivume0
- Treatment
- gamma radiation at a dose of 550 Gye0
- Outcome
- FGPe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The FGP of wheat seeds was significantly affected by gamma radiation at a dose of 550 Gy, whereas triticale seeds were significantly affected at a dose of 700 Gy”
Claim · model-written summary
The final germination percentage of triticale seeds was significantly affected by gamma radiation at 700 Gy.
- Taxon
- triticale×Triticosecalee0
- Treatment
- a dose of 700 Gye0
- Outcome
- FGPe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The FGP of wheat seeds was significantly affected by gamma radiation at a dose of 550 Gy, whereas triticale seeds were significantly affected at a dose of 700 Gy”
Claim · model-written summary
The sprout length of both wheat and triticale was similarly affected at 50 Gy.
- Taxon
- wheat and triticaleTriticum aestivum×Triticosecalet0
- Treatment
- 50 Gye0
- Outcome
- SLe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The SL of both species was similarly affected at 50 Gy”
t0“wheat and triticale cultivars”
Claim · model-written summary
Stem mortality of wheat and triticale seeds increased with increasing gamma radiation dose and days after germination.
- Taxon
- wheat and triticaleTriticum aestivum×Triticosecalee0
- Treatment
- increasing gamma radiation dose and days after germinatione0
- Outcome
- stem mortalitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The stem mortality of wheat and triticale seeds increased at an increasing gamma radiation dose and days after germination”
Claim · model-written summary
The median lethal dose (LD 50) of gamma radiation for wheat and triticale seeds was about 450 Gy.
- Taxon
- wheat and triticaleTriticum aestivum×Triticosecalee0
- Outcome
- LD 50 valuee0
- Value
- ~450 Gye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the LD 50 value for wheat and triticale seeds was ~450 Gy”
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