Abstract
Introduction . One of the most urgent issue of plant production which attracts the attention of many researchers and farmers, is salt tolerance of plants. Salinity has a negative effect, caused by the disruption of an osmotic balance of a cell that negatively affects water regime of plants. At the same time, plants experience growth inhibition and reduce their yield. The purpose of the study was to estimate resistance of different sorghum species to chloride salinity and to identify the most resistant genotypes. Methods . The study was carried out in the laboratory for plant physiology in 2018–2021. For the current study there has been carries out a modelling of a salt stress by a pure salt solution (concentration of 13 atm.) according to a conventional methodology, the control was distilled water. Results . There has been established the salinity stress effect on seed germination of different sorghum species. The values of germination energy and laboratory germination of grain sorghum were 53.1% and 62.0%; of sweet sorghum — 39.1% and 43.1; the values of Sudan grass — 30.1 and 33.5%, respectively. In the first and second groups — of highly resistant and resistant species (seed germination affected by salinity ranged from 61 to 100%) — were are 61% of grain sorghum genotypes, 56% of sugar sorghum genotypes and 6% of Sudan grass genotypes. There has been established a resistance degree and identified some features of the development of varieties with different degrees of resistance to this stress (length of sprouts and primary roots). Grain sorghum was found less susceptible to salinity stress of all studied species. Among grain sorghum samples, 9 genotypes have demonstrated the highest salinity resistance with a germination rate from 87.5 (Uch. 22/20) to 95.9% (Uch. 29/20). The maximum values were shown by the samples of Uch. 29/20 (95.95%), Uch. 20/20 (93.9%), Uch. 21/20 (93.8%), Jetta x Uch. 45/20 (91.5%) and Uch. 7/20 (90.8%), which indicated the ability to tolerate severe salinity concentration.
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Claims 16
Claim · model-written summary
Grain sorghum germination energy under salinity was 53.1%.
- Taxon
- grain sorghum
Sorghum bicolore0 - Outcome
- germination energye0
- Value
- 53.1%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“germination energy and laboratory germination of grain sorghum were 53.1% and 62.0%”
Claim · model-written summary
Grain sorghum laboratory germination under salinity was 62.0%.
- Taxon
- grain sorghumSorghum bicolore0
- Outcome
- laboratory germinatione0
- Value
- 62.0%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“laboratory germination of grain sorghum were 53.1% and 62.0%”
Claim · model-written summary
Sweet sorghum germination energy under salinity was 39.1%.
Verbatim
e0“of sweet sorghum — 39.1% and 43.1”
e1“germination energy and laboratory germination of grain sorghum were 53.1% and 62.0%”
Claim · model-written summary
Sweet sorghum laboratory germination under salinity was 43.1.
Verbatim
e0“of sweet sorghum — 39.1% and 43.1”
e1“germination energy and laboratory germination of grain sorghum were 53.1% and 62.0%”
Claim · model-written summary
Sudan grass germination energy under salinity was 30.1.
- Taxon
- Sudan grass
Sorghum ×drummondiie0 - Outcome
- germination energye1
- Value
- 30.1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the values of Sudan grass — 30.1 and 33.5%, respectively”
e1“germination energy and laboratory germination of grain sorghum were 53.1% and 62.0%”
Claim · model-written summary
Sudan grass laboratory germination under salinity was 33.5%.
- Taxon
- Sudan grassSorghum ×drummondiie0
- Outcome
- laboratory germinatione1
- Value
- 33.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the values of Sudan grass — 30.1 and 33.5%, respectively”
e1“germination energy and laboratory germination of grain sorghum were 53.1% and 62.0%”
Claim · model-written summary
Highly resistant or resistant genotypes comprised 61% of grain sorghum genotypes.
- Taxon
- grain sorghumSorghum bicolore0
- Outcome
- highly resistant and resistant speciese0
- Value
- 61%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highly resistant and resistant species (seed germination affected by salinity ranged from 61 to 100%) — were are 61% of grain sorghum genotypes”
Claim · model-written summary
Highly resistant or resistant genotypes comprised 56% of sugar sorghum genotypes.
Verbatim
e0“56% of sugar sorghum genotypes”
e1“highly resistant and resistant species”
Claim · model-written summary
Highly resistant or resistant genotypes comprised 6% of Sudan grass genotypes.
- Taxon
- Sudan grassSorghum ×drummondiie0
- Outcome
- highly resistant and resistant speciese1
- Value
- 6%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6% of Sudan grass genotypes”
e1“highly resistant and resistant species”
Claim · model-written summary
Grain sorghum was least susceptible to salinity stress among the species studied.
- Taxon
- Grain sorghumSorghum bicolore0
- Outcome
- susceptible to salinity stresse0
- Direction
- lesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain sorghum was found less susceptible to salinity stress of all studied species”
Claim · model-written summary
Nine grain sorghum genotypes showed highest salt resistance, with germination rates from 87.5 to 95.9%.
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“9 genotypes have demonstrated the highest salinity resistance with a germination rate from 87.5 (Uch. 22/20) to 95.9% (Uch. 29/20)”
t0“sorghum species”
Claim · model-written summary
Uch. 29/20 showed germination of 95.95% under severe salinity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uch. 29/20 (95.95%)”
e1“The maximum values were shown by the samples of”
t0“sorghum species”
Claim · model-written summary
Uch. 20/20 showed germination of 93.9% under severe salinity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uch. 20/20 (93.9%)”
e1“The maximum values were shown by the samples of”
t0“sorghum species”
Claim · model-written summary
Uch. 21/20 showed germination of 93.8% under severe salinity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uch. 21/20 (93.8%)”
e1“The maximum values were shown by the samples of”
t0“sorghum species”
Claim · model-written summary
Jetta x Uch. 45/20 showed germination of 91.5% under severe salinity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Jetta x Uch. 45/20 (91.5%)”
e1“The maximum values were shown by the samples of”
t0“sorghum species”
Claim · model-written summary
Uch. 7/20 showed germination of 90.8% under severe salinity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uch. 7/20 (90.8%)”
e1“The maximum values were shown by the samples of”
t0“sorghum species”