Plant Growth Regulators Improve Grain Production and Water Use Efficiency of Foeniculum vulgare Mill. under Water Stress

被引:9
作者
Parmoon, Ghasem [1 ]
Ebadi, Ali [1 ]
Hashemi, Masoud [2 ]
Hawrylak-Nowak, Barbara [3 ]
Baskin, Carol [4 ]
Jahanbakhsh, Soodabe [1 ]
机构
[1] Univ Mohaghegh Ardabili, Fac Agr, Dept Agron, POB 179, Ardebil, Iran
[2] Univ Massachusetts, Stockbridge Sch Agr, 207 Bowditch Hall,201 Nat Resources Rd, Amherst, MA 01003 USA
[3] Univ Life Sci Lublin, Fac Environm Biol, Dept Bot & Plant Physiol, Akad 15, PL-20950 Lublin, Poland
[4] Univ Kentucky, Dept Biol Plant & Soil Sci, Lexington, KY 40546 USA
来源
PLANTS-BASEL | 2022年 / 11卷 / 13期
关键词
epibrassinolide; fennel; Foeniculum vulgare Mill; grain yield; methyl jasmonate; putrescine; water use efficiency; water stress; ESSENTIAL OIL COMPOSITION; DROUGHT STRESS; PHYSIOLOGICAL-CHARACTERISTICS; EXOGENOUS APPLICATION; PROTEOMIC ANALYSIS; OXIDATIVE STRESS; YIELD; RESPONSES; L; 24-EPIBRASSINOLIDE;
D O I
10.3390/plants11131718
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The development of methods increasing plant water use efficiency (WUE) would enhance the ability to grow wild aromatic and medicinally important species. The aim of this research was to determine the effect of plant growth regulators (PGRs) applied by spraying on stress resistance and WUE of fennel subjected to water stress. Plants in the generative stage were more drought tolerant than those in the vegetative stage. Water stress at vegetative stage decreased plant biomass and grain yield by 60% and 61%, respectively. Severe water stress in vegetative stage reduced grain production by 56%, and grains had 43% lower mass than those from non-stressed plants. Application of PGRs at both stages of growth increased grain yield and biomass, but the magnitude of increase depended on the type and application time of PGRs. Plants grown in well-watered conditions and sprayed with methyl jasmonate during the vegetative stage had the highest grain production (2.7 g plant(-1)), whereas under moderate water stress, plants yielded the best (2.1 g plant(-1)) when sprayed with epibrassinolide. The maximum WUE for grain (0.91 g L-1) and essential oil production (20 mg L-1) was noted in plants exposed to moderate stress and treated with methyl jasmonate during the vegetative stage.
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页数:14
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