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Abstract
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In order to study the effects of foliar applications of methanol (0, 15, and
30%) and NaCl salinity (0, 50, and 100mM) on some physiological characteristics
of Lavandula stoechas L. plants, a pot experiment was carried out
at the Research Greenhouse of Azarbaijan Shahid Madani University.
Physiological characteristics (stem and leaf dry weights, total phenolic and
flavonoids compounds, chlorophyll a and Kþ contents, and Kþ/Naþ ratio)
were significantly affected by the interaction effects of Methanol foliar
application and salinity levels. The highest Kþ content, Kþ/Naþ ratio, chl a
and stem dry weight, belonged to NaCl 0Methanol 30% and NaCl
50Methanol 30%. For the leaves’ dry weight, the greatest data were
recorded for NaCl 0Methanol 30% and NaCl 0methanol 15%.
Methanol spray promoted the total phenolic content, especially at NaCl
50methanol 30% and NaCl 100methanol 15% and 30% and flavonoid
content at NaCl 50methanol 30%. Anthocyanin content, essential oil percent,
and flower dry weight were affected by NaCl salinity levels, and the
highest amount of anthocyanin was recorded for the control treatment.
The highest data for Essential oil was attained by the NaCl 0 and 50mM.
The Naþ content was affected by methanol foliar application and the highest
amount was obtained in the control treatment. Both foliar application
levels and salinity levels influenced the flower dry weight. The highest
amount of the flower dry weight was recorded at 30% methanol spray
level and 0mM NaCl treatments. The results reveal that methanol application
had significant effects on the physiological characteristics of
Lavandula plants growing under salinity stress condition.
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