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Journal of Plant Interactions Volume 5, 2010 - Issue 4
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Original article

Salicylic acid-induced physiological and biochemical changes in lemongrass varieties under water stress

Mohd Idrees Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, IndiaCorrespondence[email protected]
,
M. Masroor A. Khan Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, India
,
Tariq Aftab Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, India
,
M. Naeem Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, India
&
Nadeem Hashmi Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh, India
Pages 293-303 | Received 27 May 2010, Published online: 25 Aug 2010

Figures & data

Table

Figure 1.  Effect of foliar spray of salicylic acid on shoot (a) and root (b) lengths, and tiller (c) and leaves (d) number of two varieties of lemongrass plants grown under drought stress. Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

Figure 1.  Effect of foliar spray of salicylic acid on shoot (a) and root (b) lengths, and tiller (c) and leaves (d) number of two varieties of lemongrass plants grown under drought stress. Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

Figure 2.  Effect of foliar spray of salicylic acid on shoot fresh weight (a), root fresh weight (b), shoot dry weight (c) and root dry weight (d) of two varieties of lemongrass plants grown under drought stress. Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

Figure 2.  Effect of foliar spray of salicylic acid on shoot fresh weight (a), root fresh weight (b), shoot dry weight (c) and root dry weight (d) of two varieties of lemongrass plants grown under drought stress. Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

Figure 3.  Effect of foliar spray of salicylic acid on total chlorophyll (a), total carotenoid content (b), CA (c) and NR activity (d) of two varieties of lemongrass plants grown under drought stress. Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

Figure 3.  Effect of foliar spray of salicylic acid on total chlorophyll (a), total carotenoid content (b), CA (c) and NR activity (d) of two varieties of lemongrass plants grown under drought stress. Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

Figure 4.  Effect of foliar spray of salicylic acid on protein content (a), proline content (b), electrolyte leakage (c) and PEP case (d) of two varieties of lemongrass plants grown under drought stress. Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

Figure 4.  Effect of foliar spray of salicylic acid on protein content (a), proline content (b), electrolyte leakage (c) and PEP case (d) of two varieties of lemongrass plants grown under drought stress. Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

Figure 5.  Effect of foliar spray of salicylic acid on amino acid (a), γ-glutamyl kinase (b) and proline oxidase (c) of two varieties of lemongrass plants grown under drought stress. Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

Figure 5.  Effect of foliar spray of salicylic acid on amino acid (a), γ-glutamyl kinase (b) and proline oxidase (c) of two varieties of lemongrass plants grown under drought stress. Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

Figure 6.  Effect of foliar spray of salicylic acid on essential oil content (a), oil yield (b), citral content (c) and citral yield (d) of two varieties of lemongrass plants grown under drought stress. (Means of four replicates±SE). Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

Figure 6.  Effect of foliar spray of salicylic acid on essential oil content (a), oil yield (b), citral content (c) and citral yield (d) of two varieties of lemongrass plants grown under drought stress. (Means of four replicates±SE). Each value represents the mean of four replicates with SE determined. Means within a column followed by the same letter (s) are not significantly different (p ≤ 0.05). [100% FC (Control) + 0 SA (T1, Control); 75% FC + 0 SA (T2); 50% FC + 0 SA (T3); 75% FC + 10−5 M SA (T4); 50% FC + 10−5 M SA (T5)].

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