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New Zealand Journal of Crop and Horticultural Science Volume 43, 2015 - Issue 1
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Research articles

Alleviation of water stress effects on pepper seedlings by foliar application of glycinebetaine

A KorkmazDepartment of Horticulture, Faculty of Agriculture, Kahramanmaraş Sütçü Imam University, Kahramanmaraş, Turkey;Research and Development Center For University – Industry and Public Relations, Kahramanmaraş Sütçü Imam University, Kahramanmaraş, TurkeyCorrespondence[email protected]
,
Ö DeğerDepartment of Horticulture, Faculty of Agriculture, Kahramanmaraş Sütçü Imam University, Kahramanmaraş, Turkey
&
F KocaçınarDepartment of Forest Engineering, Faculty of Forestry, Kahramanmaraş Sütçü Imam University, Kahramanmaraş, Turkey
Pages 18-31 | Received 13 Dec 2013, Accepted 08 Jun 2014, Published online: 31 Oct 2014

Figures & data

Figure 1 Visual assessment of the effects of water stress. 0, no injury; 1, slight; 2, moderate; 3, severe; 4, extensive; and 5, dead. See text for more detailed information.
Figure 1 Visual assessment of the effects of water stress. 0, no injury; 1, slight; 2, moderate; 3, severe; 4, extensive; and 5, dead. See text for more detailed information.
Figure 2 Effect of foliar application of GB on: A, visual damage index; B, shoot dry weight; C, leaf area; and D, chlorophyll content of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).
Figure 2 Effect of foliar application of GB on: A, visual damage index; B, shoot dry weight; C, leaf area; and D, chlorophyll content of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).
Figure 3 Effect of foliar application of GB on: A, electrolyte leakage; B, H2O2; and C, MDA contents of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).
Figure 3 Effect of foliar application of GB on: A, electrolyte leakage; B, H2O2; and C, MDA contents of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).
Figure 4 Effect of foliar application of GB on: A, photosynthetic rate; B, stomatal conductance (gs); C, transpiration rate (E); D, efficiency of photosystem-II (Fv/Fm); and E, water use efficiency (WUE) of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).
Figure 4 Effect of foliar application of GB on: A, photosynthetic rate; B, stomatal conductance (gs); C, transpiration rate (E); D, efficiency of photosystem-II (Fv/Fm); and E, water use efficiency (WUE) of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).
Figure 5 Effect of foliar application of GB on: A, leaf GB; and B, proline contents of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).
Figure 5 Effect of foliar application of GB on: A, leaf GB; and B, proline contents of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).
Figure 6 Effect of foliar application of GB on: A, relative water content (RWC); B, leaf water potential (Ψw); and C, solute potential (Ψs) of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).
Figure 6 Effect of foliar application of GB on: A, relative water content (RWC); B, leaf water potential (Ψw); and C, solute potential (Ψs) of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).
Figure 7 Effect of foliar application of GB on: A, activities of catalase (CAT); B, and peroxidase (POX) of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).
Figure 7 Effect of foliar application of GB on: A, activities of catalase (CAT); B, and peroxidase (POX) of pepper seedlings grown under optimum and water stress conditions. Vertical bars represent mean ± SE (n = 8).

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