تأثیر تراکم بوته و نیتروژن بر ویژگی‌های فنولوژیکی، ظرفیت فتوسنتزی و خصوصیات کیفی توده ‏بومی گوار (‏‎(Cyamopsis tetragonoloba (L.) Taub.‎

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، دانشکده کشاورزی و منابع طبیعی، دانشگاه اردکان، اردکان، ایران

2 استاد، مؤسسه تحقیقات ثبت و گواهی بذر و نهال، کرج، ایران

چکیده

به منظور ارزیابی اثر تراکم بوته و کود نیتروژن بر خصوصیات فنولوژیکی، کیفی، ظرفیت فتوسنتزی و اجزای عملکرد توده بومی گوار، آزمایشی به صورت کرت­های خرد شده در قالب طرح بلوک­های کامل تصادفی با سه تکرار در شهرستان ایرانشهر در سال زراعی 1397-1396 اجراء گردید. عامل اصلی با چهار سطح تراکم بوته (25، 45، 60 و 85 بوته در متر مربع) و عامل فرعی، چهار سطح کود نیتروژن از منبع اوره (صفر، 50، 100، 150 کیلوگرم در هکتار کود اوره) بود. نتایج تجزیه واریانس داده­ها نشان داد اثر تراکم بوته بر تمامی صفات مورد بررسی، به جزء کربوهیدرات، صمغ و پروتئین، در سطح 1 درصد معنی­دار بود. مقایسه میانگین تراکم بوته نشان داد تیمار 25و 85 بوته در مترمربع به ترتیب دارای بیشترین و کمترین تعداد شاخه فرعی بودند. تیمار 45 و 85 بوته در مترمربع، به‌ترتیب دارای بیشترین و کمترین میانگین عملکرد بذر و عملکرد بیولوژیکی (کیلوگرم در هکتار) بودند. اثر متقابل100 کیلوگرم کود نیتروژن در تراکم 60 بوته در مترمربع دارای بیشترین درصد پروتئین و اثر متقابل صفر کیلو کود نیتروژن و تراکم 45 بوته در مترمربع دارای حداقل درصد پروتئین بودند. نتایج نشان داد برای دستیابی به عملکرد بذر و صمغ مطلوب، تیمار تراکم 45 بوته در مترمربع و50 کیلوگرم کود نیتروژن در هکتار برای توده بومی گرمبیت پیشنهاد می شود.

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of palnt density and nitrogen on phonological characteristics, ‎photosynthesis capacity‏ ‏and qualitative traits of guar landrace (Cyamopsis tetragonoloba L. Taub.)‎‏ ‏

نویسندگان [English]

  • Heydar Meftahizadeh 1
  • Mohammad Hassan Asareh 2
1 Assistant Professor, Faculty of Agriculture & Natural Resources, University of Ardakan, Ardakan, Iran
2 Professor, Research Institute of Seed and Seedling Registration and Certification, Karaj, Iran‎
چکیده [English]

In order to evaluate the effect of plant density and nitrogen fertilizer on phonological, qualitative, photosynthesis capacity and yield components of guar native population, an experiment was carried out as split plot based on randomized complete blocks design with three replications in 2018 at Iranshahr, Iran. The main factor was four levels of plant density (25, 45, 60 and 85 plants/m2) and the sub factor, nitrogen fertilizer from the source of urea (0, 50, 100, 150 kg / ha). The results of variance analysis showed that the effect of plant density on all traits was significant, except carbohydrate, protein and gum at 1% level. Comparison of mean plant density showed that 25 and 85 plants / m2 had the highest and lowest number of branches, respectively. Treatments of 45 and 85 plants /m2 had the highest and lowest mean of seed yield and biological yield per hectare, respectively. The interaction of 100 kg N fertilizer and 60 plants/ m2 devoted the highest percentage of protein and interaction of 0 kg N fertilizer and 45 plants/m2 has minimum protein percent. Results showed that, in order to obtain high seed and gum yield product, density of 45 plants/m2 followed by 50 kg nitrogen/ha in Grembite landraces were recommended.

کلیدواژه‌ها [English]

  • Carbohydrate
  • Gum
  • locust bean
  • Protein
  • Seed yield
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