Effects of Water Stress and Modern Biostimulants on Growth and Quality Characteristics of Mint

被引:32
作者
Elansary, Hosam O. [1 ,2 ]
Mahmoud, Eman A. [3 ]
El-Ansary, Diaa O. [4 ]
Mattar, Mohamed A. [5 ,6 ]
机构
[1] King Saud Univ, Coll Food & Agr Sci, Plant Prod Dept, Riyadh 11451, Saudi Arabia
[2] Alexandria Univ, Fac Agr El Shatby, Floriculture Ornamental Hort & Garden Design Dept, Alexandria 21545, Egypt
[3] Damietta Univ, Dept Food Ind, Dumyat 3417, Egypt
[4] Alexandria Univ, Fac Agr El Shatby, Dept Pomol, Precis Agr Lab, Alexandria 21545, Egypt
[5] King Saud Univ, Coll Food & Agr Sci, Dept Agr Engn, Riyadh 11451, Saudi Arabia
[6] Agr Res Ctr, Agr Engn Res Inst AEnRI, Giza 12618, Egypt
来源
AGRONOMY-BASEL | 2020年 / 10卷 / 01期
关键词
Mentha longifolia; biostimulants; Ascophyllum nodosum; humic acid; antioxidants; DROUGHT STRESS; ESSENTIAL OIL; PERFORMANCE; L; CAPACITY; YIELD; ACID;
D O I
10.3390/agronomy10010006
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Natural biostimulants combine different elicitors that may influence economic properties of herbal crops, such as mint. Mint (Mentha longifolia L.) plants were subjected to three water levels based on container substrate capacity (CSC; 100% CSC, 70% CSC, and 50% CSC) and/or applications of four biostimulants (CRADLE (TM), Mobilizer (TM), Nanozim De'Lite (TM) [ND], and Nanozim NXT (TM) [NN]). ND and NN exhibited higher vegetative growth and root dry weight than the control (without biostimulants) and other treatments. NN produced the highest fresh and dry mint yields under all water levels. Irrigation water-use efficiency (IWUE) of NN was highest (2.78 kg m(-3)) with 70% CSC, whereas the control produced the lowest IWUE (1.85 kg m(-3)) with 100% CSC. Biostimulants boosted physiological and metabolic responses, including gas exchange, leaf water potential, relative water content, and proline accumulation of stressed plants. NN treatment with 70% CSC had the highest essential oil (EO) ratio (3.35%). Under 70% and 50% CSC with NN treatment, the proportion of 1,8-cineol increased and that of pulegone decreased in EOs. Increased antioxidant activities, reduced H2O2 levels, and increased catalase and superoxide dismutase activities were observed. Applications of ND and NN during water stress conditions increased economic and medicinal properties of mint EOs with applications in the agricultural and pharmaceutical industries.
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页数:16
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