%0 Journal Article
%A FAN Wei-Fang
%A GAO Peng-Fei
%A LI Wen
%A NIU Zhe
%A ZHANG Jing
%A WU Jian-Hui
%T Effects of Exogenous Methyl Jasmonate on Photosynthesis and Physiological Characteristics of <i>Scutellaria regeliana</i> under Drought Stress
%D 2020
%R 10.7525/j.issn.1673-5102.2020.03.006
%J Bulletin of Botanical Research
%P 360-367
%V 40
%N 3
%X The effects of exogenous application of different concentrations(0.1, 0.5, 1 and 2 mmol&#183;L<sup>-1</sup>) of methyl jasmonate on phenotypic characteristics and photosynthesis and physiological characteristics under 15% PEG-6000 stress were studied with the <i>Scutellaria regeliana</i> as experimental materials. The results showed that:exogenous application of methyl jasmonate enhanced the net photosynthetic rate, stomatal conductance and transpiration rate of <i>S.regeliana</i>. It mainly plays a role in promoting these and effectively reduces the damage level of the <i>S.regeliana</i>. The intercellular CO<sub>2</sub> concentration was decreased, and the effect of 2 mmol&#183;L<sup>-1</sup> methyl jasmonate on the net photosynthetic rate, transpiration rate, stomatal conductance and intercellular CO<sub>2</sub> concentration of <i>S.regeliana</i> was the most significant. The free proline content of the treatment group lower than CK. The soluble protein content lower than CK in the first 6 d treatment, and was significantly higher than that of CK after 6 d treatment. Exogenous application of methyl jasmonate can increase the activity of SOD, POD and CAT as a whole. The results of photosynthetic parameters and physiological indexes of <i>S.regeliana</i> showed that exogenous application of methyl jasmonate could effectively alleviate the adverse effects of drought stress on <i>S.regeliana</i>.
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2020.03.006