Document Type : Research Paper

Authors

• mansour Jamalidost ¹
• Amin Salehi ²
• Hamidreza Balouchi ³
• Hooshang Farajee ⁴
• parvin rostampour ⁵

¹ M.Sc student, Department of Agronomy and Plant breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran Management of Jahad Agricultural Organization of Kharameh county

² Associate Professor, Department of Agronomy and Plant breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran

³ Professor, Department of Agronomy and Plant breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran

⁴ Associate Professor, Department of Agronomy and Plant breeding, Faculty of Agriculture, Yasouj University

⁵ Ph.D. student, Department of Agronomy and Plant breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran

Abstract

In order to study some characteristics of Ajwain on response to drought stress in the conditions of feeding with organic and biological fertilizers, an experiment was conducted in a split plot design based on randomized complete block design with four replications at the Sarvestan-Fars province in the 1397-98 crop year. The main factor consisted of two levels of irrigation (optimal irrigation and irrigation cutting off at flowering stage) and the sub-factor consisted of nutritional levels (control, mycorrhiza, 15 ton.ha-1 manure, 15 ton.ha-1 manure + mycorrhiza, 30 ton.ha-1 manure, 30 ton.ha-1 manure + mycorrhiz). Drought stress significantly reduced nitrogen, chlorophyll content and seed yield and increased potassium, proline and total soluble carbohydrates. Use of manure and mycorrhizal fungi in both irrigation treatments increased these traits compared to non-use conditions.. The highest grain phosphorus (0.88%), leaf carotenoid (2.07 mg.g-1 FW) and essential oil percentage (2.80%) were obtained from 30 ton.ha-1 animal manure + mycorrhiza and optimal irrigation, 30 ton.ha-1 animal manure + Mycorrhiza and irrigation cuting off and 30 ton.ha-1 animal manure + mycorrhiza and optimal irrigation respectively. The least amount of these traits (0.30%), (0.942 mg.g-1 FW) and (1.60%) were obtained in control with irrigation cuting off treatments, control treatment with optimal irrigation and control and optimum irrigation treatments respectively.Tthe root coexistence of the plant with mycorrhizal fungi and thus the plant's ability to absorb water and minerals such as phosphorus and potassium have contributed to the plant's tolerance to drought.

Keywords

• Leaf Chlorophyll
• Mycorrhiza
• Proline
• Carum copticum
• Carbohydrate

Main Subjects

• Physiology