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واکنش برخی از شاخص های فیزیولوژیک و عملکرد ارقام گندم (Triticum aestivum L.) به کاربرد 6-بنزیلآمینوپورین | ||
تحقیقات غلات | ||
مقاله 1، دوره 11، شماره 4، اسفند 1400، صفحه 281-294 اصل مقاله (244.93 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22124/cr.2022.21446.1708 | ||
نویسندگان | ||
مهدیه سادات حسینی1؛ هادی سالک معراجی2؛ افشین توکلی* 3؛ رضا فتوت3 | ||
1دانش آموخته کارشناسی ارشد، گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران | ||
2دکترای تخصصی، استاد مدعو گروه علوم کشاورزی، دانشکده باهنر پاکدشت، دانشگاه فنی و حرفه ای، تهران، ایران | ||
3دانشیار، گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران | ||
چکیده | ||
به منظور بررسی اثر محلولپاشی سیتوکینین بر تبادلات گازی، انتقال مجدد و تخصیص مواد فتوسنتزی ارقام گندم، آزمایشی در شرایط مزرعه اجرا شد. تیمارهای آزمایش شامل محلولپاشی 6- بنزیلآمینوپورین در دو سطح، صفر (شاهد) و 50 میکرومولار و شش رقم گندم (آزادی، کرج 3، روشن، فلات، سرداری و یاواروس) بودند که بهصورت فاکتوریل در قالب طرح بلوکهای کامل تصادفی با چهار تکرار مورد مطالعه قرار گرفتند. نتایج آزمایش نشان داد که محلولپاشی سیتوکینین سبب افزایش شاخص سطح برگ ارقام مورد مطالعه شد و رقم روشن بالاترین شاخص سطح برگ را دارا بود. سرعت فتوسنتز ارقام مورد بررسی نیز با یکدیگر متفاوت بود و کاربرد سیتوکینین سبب افزایش سرعت فتوسنتز شد. محلولپاشی سیتوکینین انتقال مجدد ارقام فلات، روشن و سرداری را افزایش و رقم آزادی را کاهش داد، ولی بر ارقام کرج 3 و یاواروس اثر معنیداری نداشت. تأثیر سیتوکینین بر تخصیص مواد فتوسنتزی به ساقه، برگ و سنبله در ارقام مورد بررسی بسیار متفاوت بود بهطوری که با کاربرد سیتوکینین، تخصیص مواد فتوسنتزی به برگ در رقم فلات کاهش و در سایر ارقام افزایش یافت، اما در مورد سنبله، تخصیص مواد به سنبله در رقم روشن کاهش و در ارقام کرج 3 و سرداری افزایش یافت، در حالیکه بر سایر ارقام اثرگذار نبود. در مقابل، تخصیص مواد فتوسنتزی به ساقه با محلولپاشی سیتوکینین بهمیزان 3/3 درصد کاهش یافت و ارقام سرداری، یاواروس و روشن بالاترین درصد تخصیص مواد فتوسنتزی به ساقه را دارا بودند. عملکرد ارقام کرج 3، یاواروس و سرداری با محلولپاشی سیتوکینین افزایش یافت، بهطوری که بیشترین و کمترین عملکرد دانه در تیمار بدون محلولپاشی بهترتیب در ارقام آزادی (5700 کیلوگرم در هکتار) و روشن (3100 کیلوگرم در هکتار) مشاهده شد، در حالیکه در شرایط محلولپاشی سیتوکینین، ارقام یاواروس و روشن بهترتیب با 6300 و 3300 کیلوگرم در هکتار بیشترین و کمترین عملکرد دانه را دارا بودند. نتایج نشان داد که تأثیر سیتوکینین بر ارقام مختلف گندم و صفات مختلف، متفاوت بود، اما برای دستیابی به نتایج دقیقتر و اطلاعات کاملتر، پیشنهاد میشود غلظت سیتوکینین داخلی ارقام گندم نیز مورد سنجش قرار گیرد. | ||
کلیدواژهها | ||
انتقال مجدد؛ تخصیص مواد فتوسنتزی؛ سرعت فتوسنتز؛ سیتوکینین؛ عملکرد دانه | ||
مراجع | ||
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