Evaluation of salt stress tolerance in some interspecific hybrids of wheat (Triticum sp.)
Roman Prażak
dziekanat.agbioinz@up.lublin.plInstytut Nauk Rolniczych w Zamościu, Akademia Rolnicza w Lublinie (Poland)
Abstract
The influence was studied of NaCl salt, at concentrations: 0 (control), 10, 20, 50, 100, 200 mM, on seed germination and seedling growth of nine hybrid strains obtained by crossing Aegilops juvenalis and Aegilops ventricosa with Triticum durum Desf. cv. Grandur and Triticum aestivum L. cvs. Arda, Begra, Panda, CZR 1406 line (1BL/1RS) translocated. Responses of the selected hybrid strains to NaCl were compared with reactions of their parental forms. Seeds were germinated on filter paper in Petri dishes, and moistened in Hoagland medium containing different concentrations of NaCl. Percentage of germinated seeds and maximal root and coleoptile length were assessed after five days of growth. Index of tolerance to salt treatments was calculated on the basis of coleoptile length. High salt concentration did not have negative influence on the seed germination but led to inhibition of root and coleoptile elongation. Among nine hybrids two were characterized with higher tolerance index to NaCl salt than their wheat parental cultivars, and six had lower tolerance index only in relation to the CZR 1406 line. The seedlings of (Ae. juvenalis × CZR 1406) × Begra and {[(Ae. juvenalis × CZR 1406) × CZR 1406] × Panda} × CZR 1406 hybrids and the CZR 1406 line showed the highest tolerance of the salt stress. Most strongly NaCl inhibited coleoptile elongation in the [(Ae. ventricosa × Grandur) × Panda] × Panda hybrids and the Grandur and Panda cultivars’ seedlings. Probably, high tolerance of hybrid forms with Ae. juvenalis germplasm was caused by the rye genes of parental form CZR 1406. Lower tolerance of the Ae. ventricosa hybrids was conditioned by the Grandur and Panda genes.
Keywords:
Aegilops, Triticum, hybrid strains, salt stress, seedling toleranceReferences
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Authors
Roman Prażakdziekanat.agbioinz@up.lublin.pl
Instytut Nauk Rolniczych w Zamościu, Akademia Rolnicza w Lublinie Poland
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