ارزش زراعی ژنوتیپ‌های جدیدپنبه از جنبه‌های عملکرد، صفات مورفولوژیک و کیفیت الیاف

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشیار مؤسسه تحقیقات پنبه کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، گرگان، ایران

2 عضو هیئت علمی مؤسسه تحقیقات پنبه کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، گرگان، ایران

چکیده

در این آزمایش،8ژنوتیپ‌ پنبه در قالب طرح بلوک‌های کامل تصادفی در ایستگاه تحقیقات پنبه هاشم‌ آباد واقع در یازده کیلومتری شمال غربی شهرستان گرگان به‎مدت یک سال زراعی مورد ارزیابی قرار گرفتند. آزمایش در چهار تکرار با الگوی کاشت 20×80 سانتی‌متر و هرتیمار در چهار خط11 متری کشت گردید. میانگین‌ها با آزمون دانکن در سطح 1% مورد مقایسه قرار گرفتند و همبستگی صفات در ارقام فوق مشخص شد. نتایج حاصل از تجزیه واریانس صفات نشان داد که اختلاف ارقام در صفات عملکرد کل، عملکرد چین اول، تعداد شاخه رویا، وزن غوزه، ارتفاع بوته و عملکرد چین دوم در سطح 1% ودر صفات تعداد شاخه زایا، طول شاخه زایا، طول شاخه رویا و تعداد غوزه در سطح 5% معنی‎داربود.از لحاظ عملکرد وش ژنوتیپ‌های N-200،3259 ،43347وB-557، از لحاظ عملکرد چین اول و زودرسی ژنوتیپ‌های N-200وB-557برتر بودند وژنوتیپ‌های43259، Gukorovaو43347از رشد متعادل‌تر و ارتفاع کمتر نسبت به سایر ژنوتیپ‌هابرخوردار بودند. در این تحقیق اکثر ژنوتیپ‌ها در گروه ارقام زودرس بودند و همبستگی بین عملکرد کل با تعداد غوزه، تعداد شاخه زایا و عملکرد چین اول مثبت و معنی‌دار، ولی با ارتفاع بوته منفی و معنی‌دار بود.

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