Abstract
The environmental stress such as, salinity (soil or water) are serious obstacles for field crops especially in the arid and semi-arid tracts of the world. In the Sudan, with the rapid expansion of irrigated agriculture, the question of soil salinity is becoming more and more urgent for naturally salt-affected lands under cultivation and maintaining the productivity of existing irrigated areas. It could be alleviated using irrigation and crop management. However, the former approach is very expensive. The latter is economical as well as efficient and it enables to produce salt tolerant crop varieties. Also other is a need to confirm the presence of genetically based variation for salt tolerance among different varieties of a particular crop at different plant growth stages. In order to investigate salinity stress on sorghum germination indices, an experiment was carried out in Sudan from September 2011 to October 2011 at University of Kordofan, in the Crop Sciences Department Laboratory, to create salinity stress, sodium chloride (Na Cl) at the levels of 0 (as control), 2, 4, 8 and 16 dS/m and three sorghum (Sorghum bicolor L. Moench) cultivars (Arfagadamak, Wad Ahmed and Butana) were tested. Seed germination percentage, seedling root dry weight and seedling shoot dry weight were measured. Low level of salinity (2 dS/m) increased seed germination percentage, while the high levels (4, 8 and 16 dS/m) inhibited the seed germination significantly. The strongest inhibition of germination occurred at the higher salt concentrations. Growth of young seedlings was also reduced, especially at the higher salt concentrations. Wad Ahmed cultivar was found to be salt tolerant during seedling biomass production. Arfagadamak and Butana cultivars were found to be salt sensitive during seedling biomass production. The study revealed the presence of broad intra specific genetic variation in sorghum varieties for salt stress with respect to their early biomass production.
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Claims 7
Claim · model-written summary
At 2 dS/m salinity increased seed germination percentage.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low level of salinity (2 dS/m) increased seed germination percentage”
t0“Three Sorghum (Sorghum biolor L. Moench) Cultivars”
Claim · model-written summary
Salinity at 4, 8 and 16 dS/m significantly inhibited seed germination.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the high levels (4, 8 and 16 dS/m) inhibited the seed germination significantly”
t0“Three Sorghum (Sorghum biolor L. Moench) Cultivars”
Claim · model-written summary
Young seedling growth was reduced, especially at higher salt concentrations.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth of young seedlings was also reduced, especially at the higher salt concentrations”
t0“Three Sorghum (Sorghum biolor L. Moench) Cultivars”
Claim · model-written summary
Wad Ahmed was salt tolerant during seedling biomass production.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wad Ahmed cultivar was found to be salt tolerant during seedling biomass production”
t0“Three Sorghum (Sorghum biolor L. Moench) Cultivars”
Claim · model-written summary
Arfagadamak was salt sensitive during seedling biomass production.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arfagadamak and Butana cultivars were found to be salt sensitive during seedling biomass production”
t0“Three Sorghum (Sorghum biolor L. Moench) Cultivars”
Claim · model-written summary
Butana was salt sensitive during seedling biomass production.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arfagadamak and Butana cultivars were found to be salt sensitive during seedling biomass production”
t0“Three Sorghum (Sorghum biolor L. Moench) Cultivars”
Claim · model-written summary
Sorghum varieties showed broad intraspecific variation in early biomass production under salt stress.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The study revealed the presence of broad intra specific genetic variation in sorghum varieties for salt stress with respect to their early biomass production”
The same questions in other papers
salinity · growth · SorghumResults differ
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