Research Article

Influence of Sodium Chloride on Ion Accumulation and Fibre quality in Cotton (Gossypium hirsutum L.)

Saghir Ahmad, Noor-ul-Islam Khan, Muhammad Iqbal, Muhammad Attique Sadiq and Altaf Hussain
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Three salt tolerant cultivars/lines (B-557, Culture-728-4 and MNH-156) and three salt sensitive cultivars/lines (B-1580 (ne), Culture-604-4 and MNH-147) were grown in salinized soil under greenhouse conditions. Four treatments of NaCl, i.e., 16 (control), 70, 140, 210 mol m-3 were applied after 10 days of initial growth, and experiment continued till maturity. Determination of ions at seedling stage showed that the salt tolerant and the salt sensitive cultivars did not differ significantly in accumulation of leaf. The salt sensitive cultivars had more concentration of Cl- in leaves than those of the salt tolerant lines at the highest salt level. The salt tolerant cultivars had generally higher concentrations of K+, Ca2+ and K/Na ratios in the leaves than those of salt sensitive lines at the highest NaCl concentration (210 mol m-3). Ginning out-turn and fibre fineness increased with the increasing concentrations of salt, whereas staple length, fibre maturity and fibre strength showed decreasing trend at higher salt concentrations (140 and 210 mol m-3). The salt tolerant cultivars/lines had lower ginning out-turn, but better fibre fineness, higher staple length, fibre maturity and fibre strength compared with those of the salt sensitive cultivars. The salt tolerance in cotton is thus associated with higher uptake of K+, Ca2+, low accumulation of Cl-in the leaves and low ginning out-turn but higher staple length, fibre maturity and fibre strength.

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  How to cite this article:

Saghir Ahmad, Noor-ul-Islam Khan, Muhammad Iqbal, Muhammad Attique Sadiq and Altaf Hussain, 2003. Influence of Sodium Chloride on Ion Accumulation and Fibre quality in Cotton (Gossypium hirsutum L.). Journal of Biological Sciences, 3: 699-710.

DOI: 10.3923/jbs.2003.699.710



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