Articles
Effect of drought stress on some morphological and physiological characteristics of Echinacea spp.
Article number
1315_66
Pages
445 – 452
Language
English
Abstract
Drought stress is one of the most important environmental stress of plants in arid and semi-arid regions that limit productivity.
To evaluate the effects of drought stress on two-year-old seedlings of Echinacea purpurea and Echinacea angustifolia, an experiment was conducted with four levels of irrigation: 25, 50, 75, and 100% of field capacity (FC) as a completely randomized factorial.
Several morphological, biochemical, and developmental traits were measured after three months of treatment.
Growth indices such as plant height, shoot weight, root weight, shoot dry weight, and root dry weight, were reduced at lower FC in both species.
Flowering was not observed in E. angustifolia under 50 and 25% FC treatments, and the best flowering quality and longevity was observed in E. purpurea under 75% FC. Protein content decreased in both species when plants were exposed to lower irrigation levels.
The lowest protein content was seen in E. angustifolia under 25% FC. Reducing radical scavenging activity was observed in both species during drought stress, while the highest antioxidant capacity was found in E. purpurea under 75% FC. Proline content was highest in E. angustifolia under 25% FC. Based on flower quality, longevity, and antioxidant capacity, it seems that E. purpurea is more tolerant than E. angustifolia to drought stress.
To evaluate the effects of drought stress on two-year-old seedlings of Echinacea purpurea and Echinacea angustifolia, an experiment was conducted with four levels of irrigation: 25, 50, 75, and 100% of field capacity (FC) as a completely randomized factorial.
Several morphological, biochemical, and developmental traits were measured after three months of treatment.
Growth indices such as plant height, shoot weight, root weight, shoot dry weight, and root dry weight, were reduced at lower FC in both species.
Flowering was not observed in E. angustifolia under 50 and 25% FC treatments, and the best flowering quality and longevity was observed in E. purpurea under 75% FC. Protein content decreased in both species when plants were exposed to lower irrigation levels.
The lowest protein content was seen in E. angustifolia under 25% FC. Reducing radical scavenging activity was observed in both species during drought stress, while the highest antioxidant capacity was found in E. purpurea under 75% FC. Proline content was highest in E. angustifolia under 25% FC. Based on flower quality, longevity, and antioxidant capacity, it seems that E. purpurea is more tolerant than E. angustifolia to drought stress.
Publication
Authors
S. Heidari, R. Fotouhi Ghazvini, M. Kafi, M. Zavareh
Keywords
coneflower, antioxidant, floriculture, xeriscaping
Groups involved
- Division Temperate Tree Fruits
- Division Vine and Berry Fruits
- Division Tropical and Subtropical Fruit and Nuts
- Division Ornamental Plants
- Division Plant-Environment Interactions in Field Systems
- Division Postharvest and Quality Assurance
- Division Horticulture for Development
- Division Precision Horticulture and Engineering
- Division Plant Genetic Resources, Breeding and Biotechnology
- Commission Cultivar Registration
- Division Horticulture for Human Health
- Division Greenhouse and Indoor Production Horticulture
- Division Landscape and Urban Horticulture
- Commission Banana
- Division Vegetables, Roots and Tubers
- Division Temperate Tree Nuts
- Commission Agroecology and Organic Farming Systems
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