Bedding plants form an important part of the urban public space and private gardens. Drought stress management is considered as an important factor in nowadays landscape. Low water use landscaping is becoming common issue in arid regions, little information is available
چکیده کامل
Bedding plants form an important part of the urban public space and private gardens. Drought stress management is considered as an important factor in nowadays landscape. Low water use landscaping is becoming common issue in arid regions, little information is available about regulated deficit irrigation tolerance and responses of many ornamental plants, especially annuals and herbaceous perennials. Calendula officinalis L. (Asteraceae), known as calendula or marigold, is an annual species widely used around the world as a medicinal plant. The main aim of this study was to evaluate drought stress response at two levels (100 and 50% FC) on 13 pots of marigold cultivars (Candyman Orange, Fiesta Gitana, Citrus Cocktail, Neon, Candyman Yellow, Fruit Twist, Sherbet Fizz, Oopsy Daisy, Pot Marigold, Greenheart Orange, Calendula Porcupine, Pink Surprise and Touch of the Red) with 4 replicates under greenhouse conditions. The morphological and biochemical traits were measured and analyzed at the end of the experiment. Water stress (50% FC) reduced most of the evaluated traits and increased proline content (p <0.01). Flower characteristics such as flower and diameter were also observed declined as the aim indexes preserved. Finally two premium selected cultivars Neon and Candyman were selected as the most resistant. It seems that water supply is the main factor affecting growth and flowering is annual bedding plants and the quality and quantity declines in drought noticeably. Evaluation of these traits along with resistance response will help to use them for more sustainable with low input landscapes in mind.
پرونده مقاله