Assessment of Salinity Tolerance in the Selected Genotypes of Cotton

Document Type : Original Article

Authors

1 Cotton Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran

2 Sari Agricultural Sciences and Natural Resources University (SANRU), Sari, Iran

Abstract

In order to evaluate the salinity tolerance of cotton genotypes, 14 selected genotypes together with a commercial cultivar (as control) were compared in laboratory and farm in during the 2014-2015 growing season. The aim of this study was recognition salinity tolerant genotypes at the germination stage and found the relationship between laboratory and farm conditions to reduce costs and minimize the time needed to improve tolerance to salinity. The laboratory study was performed as a factorial experiment based on a completely randomized design with three replications. The first factor was salinity at 3 levels (0, 8 and 16 ds/m) and the second factor was genotypes selected from 180 imported varieties using a two-step selection in previous experiments. The measured traits include the percentage of germination (Ger%), stem length (SL), root length (RL), stem wet weight (SWW), stem dry weight (SDW), root wet weight (RWW), root dry weight (RDW), stem tissue water content (SWC), root tissues water content (RWC), seedling wet weight (SLWW), seedling dry weight (SLDW) and whole plant water content (PWC). Results showed that there are significant differences among studied genotypes for the mentioned traits at a 5 or 1 percent level. Salinity treatments have reduced the length of stem, root and wet weight of cotton seedlings. The TJ189 genotype showed higher performance for GER (91.6), also TJ178 for SL (51.6) and TJ169 for RL (70.5). For SWW and RWW, genotypes TJ120 and TJ183 with 362.4 and 53.6 mg were higher than the control cultivar, respectively. Tj82 the most seed cotton yield and Golestan the most earliness have among the 15 genotypes.

Graphical Abstract

Assessment of Salinity Tolerance in the Selected Genotypes of Cotton

Highlights

  • Salt decreased ger%, vigor seeds, and TWC in the cotton seedling.
  • There was a relationship between the germination stage in the lab and farm issue salinity tolerance in cotton.
  • Tj82 the most seed cotton yield and Golestan the most earliness had among the genotypes.

Keywords

Main Subjects

References

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Agrotechniques in Industrial Crops
Volume 2, Issue 2
Agrotechniques in Industrial Crops (Agrotech Ind Crops) (Online ISSN: 2783-2945)
June 2022
Pages 65-73

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