<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The genetic potentials of eight species of Achillea (A. millefolium, A. fillipendulla, A. biebersteinii, A. nobilis, <italic>A. eriophora</italic>), <italic>Matricaria</italic> (<italic>M. ricotita</italic>), and <italic>Anthemis</italic> (<italic>An. haussknechtii</italic> and <italic>An. tinctoria</italic>) under drought conditions during the seedling stage were measured. Non-ionic water-soluble polymer polyethylene glycol (PEG, molecular weight 6000) was used to simulate water stress at five osmotic potential levels (0, –0.3, –0.6, –0.9, and –1.2 MPa). An acceptable threshold value for germination was osmotic potential –0.6 MPa, and the modest osmotic potential was –1.2 MPa for studied taxa. Seedlings of germinated at two control and osmotic potential –0.6 MPa (as an acceptable threshold value for germination) treatments were sowed in a field under rainfed conditions. Genetic differentiation of control plants (CP) versus early selected plants (ESP, germinated at osmotic potential –0.6 MPa) was studied using morphological, physiological, and molecular (ISSR) markers. No significant differences were observed between morphological traits of CP and ESP in all species, however, days to full flowering shortened in ESP. The physiological results demonstrate that under rainfed conditions, the ESP, in a quick response, collect osmolytes and amplify the activity of antioxidative enzymes to survive drought. The genetic relationship in the group of genotypes, that ISSR marker set it out, is affiliated to taxon even though AMOVA showed a partial differentiation between CP and ESP groups (21%). It was concluded that the selection of tolerating individuals at the seedling stage represents a likely positive strategy to have higher drought tolerance feature in plants under rainfed conditions.</p>
</abstract>

The genetic potentials of eight species of Achillea (A. millefolium, A. fillipendulla, A. biebersteinii, A. nobilis, A. eriophora), Matricaria (M. ricotita), and Anthemis (An. haussknechtii and An. tinctoria) under drought conditions during the seedling stage were measured. Non-ionic water-soluble polymer polyethylene glycol (PEG, molecular weight 6000) was used to simulate water stress at five osmotic potential levels (0, –0.3, –0.6, –0.9, and –1.2 MPa). An acceptable threshold value for germination was osmotic potential –0.6 MPa, and the modest osmotic potential was –1.2 MPa for studied taxa. Seedlings of germinated at two control and osmotic potential –0.6 MPa (as an acceptable threshold value for germination) treatments were sowed in a field under rainfed conditions. Genetic differentiation of control plants (CP) versus early selected plants (ESP, germinated at osmotic potential –0.6 MPa) was studied using morphological, physiological, and molecular (ISSR) markers. No significant differences were observed between morphological traits of CP and ESP in all species, however, days to full flowering shortened in ESP. The physiological results demonstrate that under rainfed conditions, the ESP, in a quick response, collect osmolytes and amplify the activity of antioxidative enzymes to survive drought. The genetic relationship in the group of genotypes, that ISSR marker set it out, is affiliated to taxon even though AMOVA showed a partial differentiation between CP and ESP groups (21%). It was concluded that the selection of tolerating individuals at the seedling stage represents a likely positive strategy to have higher drought tolerance feature in plants under rainfed conditions.

Evaluation of <italic>Achillea</italic>, <italic>Matricaria</italic>, and <italic>Anthemis</italic> plants following selection for drought tolerance at seedling stages

Folia Oecologica

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Evaluation of , , and  plants following selection for drought tolerance at seedling stages

The genetic potentials of eight species of Achillea (A. millefolium, A. fillipendulla, A. biebersteinii, A. nobilis, A. eriophora), Matricaria (M. ricotita),...

Evaluation of Achillea, Matricaria, and Anthemis plants following selection for drought tolerance at seedling stages

Publié en ligne: 30 déc. 2021

Pages: 80 - 91

Reçu: 29 août 2021

Accepté: 01 déc. 2021

DOI: https://doi.org/10.2478/foecol-2022-0009

Mots clés
antioxidative enzymes, osmolytes, PEG, rainfed conditions

© 2022 Parvin Salehi Shanjani et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Evaluation of Achillea, Matricaria, and Anthemis plants following selection for drought tolerance at seedling stages

Publié en ligne: 30 déc. 2021

Pages: 80 - 91

Reçu: 29 août 2021

Accepté: 01 déc. 2021

DOI: https://doi.org/10.2478/foecol-2022-0009

Mots clésantioxidative enzymes, osmolytes, PEG, rainfed conditions

© 2022 Parvin Salehi Shanjani et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
antioxidative enzymes, osmolytes, PEG, rainfed conditions