بررسی انتقال مجدد مواد فتوسنتزی در ارقام مختلف گندم (Triticum aestivum L.) تحت کاربرد منابع مختلف کودی در شرایط دیم
محورهای موضوعی : اکوفیزیولوژی گیاهان زراعیرحیم ناصری 1 * , امیر میرزایی 2 , عباس سلیمانی فرد 3
1 - گروه تکنولوژي تولیدات گیاهی، آموزشکده فنی¬مهندسی و کشاورزی دهلران، دانشگاه ایلام، ایلام، ایران.
2 - بخش تحقيقات علوم زراعی و باغی، مركز تحقيقات و آموزش كشاورزي و منابع طبيعي استان ايلام، سازمان تحقيقات، آموزش و ترويج كشاورزي، ايلام، ايران
3 - مربی، گروه علوم کشاورزی، دانشگاه پیام نور، صندوق پستی3697-19395 تهران، ایران.
کلید واژه: فتوسنتز جاری, کارایی انتقال مجدد, سهم انتقال مجدد, ساقه, سنبله,
چکیده مقاله :
به¬منظور بررسي تاثیر باکتری¬های افزاینده رشد روی انتقال مجدد مواد فتوسنتزی درارقام جدید گندم ديم، آزمايشي مزرعه¬اي به¬صورت فاکتوريل در قالب طرح بلوک¬¬هاي کامل تصادفي با سه تکرار در مزرعه ايستگاه تحقيقات كشاورزي سرابله در سال زراعي 99-1398 اجرا شد. تيمار¬هاي آزمايشي شامل ارقام مختلف گندم (سرداری، کریم، کوهدشت و ریژاو) و تيمار منابع مختلف كودي شامل: شاهد (عدم مصرف هیچ منبع کودی)،50 درصد كود شيميايي نیتروژن، باكتري آزوﺳﭙﺮﯾﻠﯿﻮم+50 درصد كود شيميايي نیتروژن، باكتري ازﺗﻮﺑﺎﮐﺘﺮ+50 درصد كود شيميايي نیتروژن، باكتري آزوﺳﭙﺮﯾﻠﯿﻮم+ازﺗﻮﺑﺎﮐﺘﺮ+50 درصد كود شيميايي نیتروژن، 100 درصد كود شيميايي نیتروژن بودند. نتايج اين پژوهش نشان داد كه اثر رقم و منابع كودي بر وزن خشك ساقه و سنبله، كارايي انتقال مجدد از ساقه و سنبله، سهم انتقال مجدد ساقه و سنبله در عملكرد دانه، ميزان و سهم فتوسنتز جاري، طول دوره و سرعت پرشدن دانه معني¬دار بود. به طوری¬که برهمکنش رقم ریژاو×باكتري آزوﺳﭙﺮﯾﻠﯿﻮم+ازﺗﻮﺑﺎﮐﺘﺮ+50 درصد كود شيميايي نیتروژن داراي بيشترين كارايي انتقال مجدد از سنبله، سهم انتقال مجدد سنبله، ميزان و سهم فتوسنتز جاري و سرعت پر شدن دانه بود. در این پژوهش نیز بیشترین كارايي انتقال مجدد از ساقه، سهم انتقال مجدد ساقه در عملكرد دانه از برهمکنش رقم محلی×تیمار شاهد (عدم مصرف هیچ منبع کودی) به¬دست آمد.
In order to investigate the effect of growth-promoting bacteria on dry matter remobilization of new dryland wheat cultivars, field experiment was conducted in a factorial using randomized complete block design with three replications on the farms of Sarablah Agricultural Research Center in the cropping seson during 2019-2020. Experimental treatments include different wheat cultivars (Sardari, Karim, Koohdasht and Rijaw) and treatment of different fertilizer sources including: control (without fertilizer source), 50% N fertilizer, Azospirillum + 50% N fertilizer, Azetobacter + 50% N fertilizer, Azospirillum + Azetobacter + 50% N fertilizer and 100% N fertilizer recommended. The results of this study showed that the effect of cultivar and fertilizer sources were significant on stem and spike dry weight, dry matter remobilization efficiency from stem and spike, contribution of stem and spike reserves to grain yield, current photosynthesis rate, contribution of current photosynthesis, grain filling period and grain filling rate. The interaction of Rijaw × Azospirillum+ Azetobacter+ 50% N fertilizer had the highest dry matter remobilization efficiency from spike, Contribution of spike reserves to grain yield, current photosynthesis rate, contribution of current photosynthesis and grain filling rate. In this study, the highest dry matter remobilization efficiency from stem, contribution of stem reserves to grain yield was obtained from the interaction between Sardari cultivar × control treatments (without fertilizer source).
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