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واکنش ارقام تجاری و لاین‌های جدید کلزا به شرایط کشت تأخیری در مازندران | ||
| به زراعی نهال و بذر | ||
| مقاله 2، دوره 33، شماره 1، خرداد 1396، صفحه 13-30 اصل مقاله (276.82 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/sppj.2017.113756 | ||
| نویسنده | ||
| ولی‌الله رامئه* | ||
| تحقیقات و آموزش کشاورزی و منابع طبیعی مازندران، | ||
| چکیده | ||
| به منظور بررسی اثر کشت تأخیری برخصوصیات فنولوژیکی، عملکرد دانه و اجزای عملکرد ژنوتیپ‌های بهاره کلزا، آزمایشی به صورت کرت‌های خرد شده در قالب طرح بلوک های کامل تصادفی با سه تکرار در دو سال زراعی 90-1389 و 91-1390 در مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی مازندران اجرا شد. چهار تاریخ کاشت 27 مهر ماه، 7، 17 و 27 آبان ماه به عنوان عامل اصلی و پنج ژنوتیپ ظفر، ساریگل، L7، L4 و هایولا 401 به عنوان عامل فرعی مورد مطالعه قرارگرفتند. نتایج تجزیه واریانس مرکب داده‌ها حاکی از معنی‌دار بودن اثر تاریخ کاشت، ژنوتیپ و اثر متقابل تاریخ کاشت و ژنوتیپ برای کلیه خصوصیات مورد بررسی به استثناء وزن هزار دانه بود. تأخیر در کاشت منجر به کاهش اجزای عملکرد و عملکرد دانه شد. همبستگی مثبت و معنی‌دار طول دوره گلدهی، روز تا رسیدگی، تعداد خورجین در بوته، وزن هزاردانه و شاخص برداشت با عملکرد دانه نیز نشان دهنده آن بود که مقادیر بالای این خصوصیات در تاریخ کاشت‌های اولیه منجر به افزایش عملکرد دانه شده است. ارقام ظفر و هایولا401 به ترتیب با میانگین عملکرد دانه 9/2815 و 6/2753 کیلوگرم در هکتار در تمامی تاریخ کاشت‌های مورد بررسی مقادیر بالای این صفت را به خود اختصاص دادند و برای کاشت در کاشت‌های تأخیری نیز از ارجحیت بیشتری برخوردارند. | ||
| کلیدواژه‌ها | ||
| کلزا؛ اجزای عملکرد؛ شاخص برداشت؛ کشت تأخیری؛ عملکرد دانه | ||
| عنوان مقاله [English] | ||
| Response of Commercial Cultivars and New Lines of Oilseed Rape to Delayed Sowing Conditions in Mazandaran | ||
| نویسندگان [English] | ||
| v. Rameeh | ||
| Department, Mazandaran Agricultural and Natural Resources Research and Education Center | ||
| چکیده [English] | ||
| To evaluate the effect of delayed sowing dates on phenological traits, yield components and seed yield of spring oilseed rape genotypes, a split plot experimental design with three replications was carried out at Mazandaran Agricultural and Natural Resources Research and Education Center during 2010-2011 and 2012-2013 cropping seasons. Four sowing dates of 19, 29 October, 8, 18 November were considered as the main plots and five genotypes of Zafar, Sarigol, L7, L4 and Hyola 401 as sub plots. The results of combined analysis of variance showed significant effects of sowing date, genotype and their interaction on all characteristics except 1000-seed weight. Delay in planting resulted in a significant reduction of seed yield and its components. Positive and significant correlation of seed yield with duration of flowering, days to maturity, number of pods per plant, number of seeds per pod, 1000-seed weight and harvest index showed that high levels of these traits in early sowing dates had increasing effects on seed yield. Among the genotypes, Zafar and Hayola 401 had high mean values of seed yield in all sowing dates and therefore had priority for planting in delayed sowing dates. | ||
| کلیدواژه‌ها [English] | ||
| Oilseed rape, Yield components, harvest index, delayed sowing, seed yield | ||
| مراجع | ||
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