بهمنظور بررسی اثر تنش خشکی انتهای فصل و ترکیبهای مختلف کشت مخلوط تأخیری نخود با جو بر صفات بیوشیمیایی و عملکرد آزمایشی بهصورت اسپلیت پلات در قالب طرح بلوکهای کامل تصادفی با سه تکرار در سال زراعی 97- 1396 در مزرعه تحقیقاتی دانشکده کشاورزی و منابع طبیعی داراب، دانشگاه شیراز اجرا شد. تیمارهای آزمایش شامل رژیم آبیاری در دو سطح (آبیاری مطلوب و قطع آبیاری در مرحله شیریشدن دانه جو) به عنوان فاکتور اصلی و ترکیبهای کشت مخلوط تأخیری شامل کشتهای خالص رقم جو شش ردیفه زهک، کشتهای خالص نخود رقم داراب و ترکیبهای مختلف کشت مخلوط شامل جو آذر+نخود آذر، جو آذر+نخود دی، جودی+نخود آذر و جو دی+نخود دی با نسبت 1به1 به عنوان فاکتور فرعی بودند. نتایج نشان داد که تنش خشکی انتهای فصل برهمه صفات بهجز تعداد دانه در غلاف، وزن1000دانه، پروتئین دانه نخود و عملکرد دانه جو اثر معنیداری داشت. در گیاه نخود، تنش خشکی باعث کاهش محتوای کلروفیل a در همه تیمارها گردید و کمترین میزان کاهش محتوای کلروفیل a در کشت مخلوط جو دی+نخود دیماه به میزان 3/22 درصد بهدست آمد. همچنین تنش خشکی باعث کاهش محتوای کلروفیل b در همه تیمارها بهجز تککشتی نخود دیماه شد در صورتیکه تنش خشکی باعث افزایش میزان آنزیمهای کاتالاز و پراکسیداز گردید که بیشترین میزان افزایش آنها بهترتیب با 04/74 و 36/81 درصد در کشتهای مخلوط جو آذر+نخود دیماه و جو آذر+نخود آذرماه بهدست آمد. تنش خشکی بهترتیب باعث افزایش 58 و 25 درصدی LER نخود و کل نسبت به شرایط آبیاری مطلوب شد. در شرایط تنش خشکی بیشترین عملکرد دانه در کشت مخلوط جوآذر+نخود دیماه بهدست آمد. بهطورکلی میتوان نتیجه گرفت که احتمالاً در شرایط تنش خشکی انتهای فصل استفاده از سیستمهای کشت مخلوط تأخیری جو آذر با نخود دیماه راهکاری مناسب برای تولید پایدارتر این گیاهان نسبت به تککشتی میباشد.
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