بهبود تحمل به تنش خشکی گیاه بزرک به وسیله همزیستی میکوریزی

Inoculation with mycorrhizal fungi is one of the new ways to deal with stress conditions. Mycorrhiza is very effective in reducing the harmful effects of stress, especially drought conditions and increases plant growth and yield. The research was conducted in growth chamber as a factorial experiment based on a randomized complete block design with two factors including water regime (100%, 70% and 40% field capacity moisture) and mycorrhiza (non inoculation and inoculation with Glomus mosseae) on shoot height, leaf area, chlorophyll content, root and shoot dry weight, proline content and root colonization of flaxseed plant. The results showed that severe drought (40% field capacity) reduces height, leaf area, chlorophyll, root and shoot dry weight and increases proline content and colonization. Mycorrhizal inoculation with Glomus mosseae, in the both normal irrigation and drought stress conditions increased height, leaf area, chlorophyll, root and shoot dry weight, proline and colonization of the flaxseed plant; Therefore, use of mycorrhizal fungi (Glomus mosseae) is recommended in flaxseed cultivation, especially in arid and semi arid regions.