چکیده:
Since there is limited information on the simultaneous effect of drought stress and salicylic acid on yield and mucilage
content of the medicinal herb, Plantago ovata Forssk is available, a pot experiment was conducted in factorial form based
on a randomized complete block design with three replications in Jiroft, Kerman Province, south of Iran. As the first
factor, drought stress included four levels of irrigation: 100℅ field capacity (FC) (no stress), 75℅ FC (low stress), 50℅
FC (medium stress) and 25℅ FC (high stress). In the second factor, salicylic acid had four levels: 0, 0.01, 0.5 and 1 mM.
The results showed that maximum yield and yield components of P. ovata Forssk were obtained with 100℅ FC and
simultaneous application of 1 mM salicylic acid. Minimum amounts of yield and yield components resulted from
irrigation based on 25℅ FC with no application of salicylic acid. Such an outcome revealed the significant role of salicylic
acid in increasing the tolerance of Plantago ovata Forssk to drought stress.
خلاصه ماشینی:
"ir Desert 20-2 (2015) 245-252 Effect of drought stress and salicylic acid on yield and mucilage content of the medicinal herb Plantago ovata Forssk H.
Solimani Department of Soil Science, Faculty of Agriculture, Vali-e-Asr University, Rafsanjan, Kerman, Iran Received: 28 August 2015; Received in revised form: 3 October 2015; Accepted: 22 October 2015 Abstract Since there is limited information on the simultaneous effect of drought stress and salicylic acid on yield and mucilage content of the medicinal herb, Plantago ovata Forssk is available, a pot experiment was conducted in factorial form based on a randomized complete block design with three replications in Jiroft, Kerman Province, south of Iran.
Since there are few studies on the simultaneous effect of drought stress and salicylic acid on yield and mucilage content of the medicinal herb, P.
3. Results and Discussion According to the data variance analysis of the present study (Table 1), drought stress and salicylic acid had a significant effect on bush height, plant dry weight, numbers of spikes, thousand seed weight and mucilage.
In contrast, low irrigation water, non-use of salicylic acid, or its low concentrations led to a marked decline in the plant dry weight.
The interactive effect of drought stress and salicylic acid on the thousand seed weight was significant (Table 1), and from irrigation based on 100℅ FC and 1 mM salicylic acid, the heaviest weight (1.
Minimum yield and yield components stemmed from irrigation based on 50℅ FC without any salicylic acid, again an indication of the role of salicylic acid in increasing plant tolerance of drought stress."