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تأثیر دور آبیاری و سطوح مختلف نیتروژن بر تغذیه گیاه والد و بنیه بذر و برخی صفات مرتبط دورگ سینگل کراس704 درکرمانشاه | ||
| علوم و فناوری بذر ایران | ||
| مقاله 10، دوره 4، شماره 2 - شماره پیاپی 8، مهر 1394، صفحه 119-136 اصل مقاله (411.25 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| نویسندگان | ||
| الهام فرهادی* 1؛ جهانفر دانشیان2؛ آیدین حمیدی3؛ امیرحسین شیرانی راد2؛ سید علیرضا ولدآبادی4 | ||
| 1دانش آموخته دکتری زراعت- اکولوژی، گیاهان زراعی دانشگاه آزاد اسلامی واحد تاکستان | ||
| 2استاد پژوهش مؤسسه تحقیقات اصلاح و تهیه نهال و بذر- کرج | ||
| 3استادیار پژوهش مؤسسه تحقیقات ثبت و گواهی بذر و نهال –کرج | ||
| 4دانشیار دانشگاه آزاد اسلامی واحد تاکستان | ||
| چکیده | ||
| به منظور بررسی تأثیر دور آبیاری و تغذیه گیاه والد با مقادیر مختلف نیتروژن بر بنیـه بـذر و گیاهچـه و برخـی ویژگـی هـای مـرتبط ذرت دورگ سینگل کراس704) MO17× B73 ، (پژوهشی در مزرعه ایستگاه تحقیقاتی مرکز تحقیقات کشاورزی و منابع طبیعی استان کرمانشـاه و آزمایشگاه تجزیه کیفی بذر مؤسسه تحقیقات ثبت و گواهی بذر و نهال کرج انجام گردید. آزمایش مزرعهای بر پایه طرح بلوکهای کامـل تصادفی و بهصورت کرتهای خرد شده با 3 تکرار انجام شد. سطوح تیمارهای مورد بررسی بهصورت دورهای آبیاری7 ،11،9 و 13 روز بـه - عنوان عامل اصلی و میزانهای نیتروژن 200 ،300 ،400 و 500 کیلوگرم در هکتار بهعنوان عامل فرعی مرتب شدند. وزن هزار بذر تعیین شـده وآزمونهای بنیه بذر و گیاهچه شامل تجزیه و تحلیل رشد گیاهچه، سرعت خروج رادیکل(ریشهچه) و هدایت الکتریکی برپایه طـرح بلـوک - های کامل تصادفی و بهصورت فاکتوریل با 4 تکرار اجرا گردیدند و درصد جوانهزنی نهایی، گیاهچههـای عـادی و غیرعـادی ، متوسـط زمـان جوانهزنی، طول گیاهچه و ریشهچه، وزنتر گیاهچه و ریشهچه، وزن خشک گیاهچه، ریشهچه و ساقهچه و شـاخص هـای طـولی و وزنـی بنیـه گیاهچه و هدایت الکتریکی اندازهگیری شدند. نتایج نشان داد بذرهای تولید شده در شـرایط دور آبیـاری 7 و9 روز و میـزان 400 کیلـوگرم در هکتار نیتروژن ازنظر بنیه بذر و گیاهچه برخی صفات مرتبط از مطلوبترین وضعیت برخوردار بودند. از این رو، براساس نتایج این تحقیق و به علت محدودیت منابع آبی برای آبیاری شرایط دور آبیاری9 روزه و مصرف400 کیلـوگرم نیتـروژن در هکتـار بـرای تولیـد بـذ ر ذرت دورگ سینگل کراس704 در شرایط کرمانشاه توصیه میگردد. | ||
| کلیدواژهها | ||
| ذرت دورگ سینگل کراس 704؛ بنیه بذر و گیاهچه؛ سرعت خروج رادیکل(ریشهچه) و هدایت الکتریکی(EC | ||
| عنوان مقاله [English] | ||
| Effect of irrigation inerval and different nitrogen rates on parent plant nutrition and seed vigor and some related traits of hybrid maize single cross 704 in Kermanshah | ||
| چکیده [English] | ||
| In order to study on effect of irrigation intervals and parent plant nutrition by various nitrogen levels on seed and seedling vigor and some related characteristics of hybrid maize single cross 704 (B73× MO17)a research conducted at Kermanshah province research station field of Agricultural and Natural Resources Research Centre and seed quality analysis laboratory of Seed and Plant Certification and Registration Institute (SPCRI) at Karaj.Field experiment based on complete randomized clocks design and as split plot by three replications conducted. Studied treatments levels arranged as7, 9, 11 and 13 day irrigation intervals as main plots and nitrogen rates 200, 300, 400 and 500 kg per hectare as sub plots. One thousand seed weight was determined and seed and seedling vigour tests including seedling growth analysis, radical emergence rate and electrocunductivity conducted based on complete randomized blocks design by four replications and final germination, normal and abnormal seedlings percent, mean germination time, seedling and primary root length, seedling and primary root fresh weigh, seedling and primary root and shoot dry weigh, seedling length and weight vigour index and electrical conductivity were measured. Results revealed produced seeds in 7 and 9 day irrigation intervals and 400 kg per hectare nitrogen from seed and seedling vigour and some related characters point of view had most optimum situation. Thereafter, based on this research results and for the reason of water resources for irrigation limitation, 9 day irrigation interval and 400 kg per hectare condition recommended forhybrid maize single cross 704 seed production in Kermanshah conditions. | ||
| کلیدواژهها [English] | ||
| Hybrid maize single cross 704, seed and seedling vigour, radical emergence rateand electrical conductivity | ||
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