تاثیر فصل کاشت بر عملکرد و اجزای عملکرد ارقام بهاره کلزا در رژیم های مختلف رطوبتی
محورهای موضوعی : یافته های نوین کشاورزی
حسین ورسه
1
(دانشجوی کارشناسی ارشد زراعت دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران)
امیرحسین شیرانی راد،
2
(دانشیار موسسه اصلاح و تهیه نهال و بذر کرج)
قربان نورمحمدی
3
(استاد دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران)
بابک دلخوش
4
(استادیار دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران)
بهاره ورسه
5
(دانشجوی دانشگاه پیام نور قزوین)
کلید واژه: عملکرد دانه, تنش رطوبتی, فصل کاشت, خورجین اصلی, خورجین فرعی,
چکیده مقاله :
به منظور مطالعه تاثیر فصل کاشت و تنش رطوبتی بر عملکرد و اجزای عملکرد ارقام بهاره کلزا این آزمایش به صورت فاکتوریل اسپلیت پلات در قالب بلوک های کامل تصادفی با سه تکرار در سال زاراعی 1388-1387در ایستگاه تحقیقات کشاورزی قزوین انجام شد. آزمایش در دو فصل کاشت عنوان عامل اصلی، شامل فصل کاشت پاییزه (0/7/87) و فصل کاشت بهاره (10/12/87) و آبیاری در دو سطح شامل آبیاری معمول (شاهد) و قطع آبیاری از مرحله گل دهی به بعد و نیز ارقام کلزا شامل چهار رقم RGS003،Sarigol ،Hyola401 وOption500 بودند. محاسبه صفاتی طول خورجین اصلی و فرعی، تعداد دانه در خورجین اصلی و فرعی و عملکرد دانه معیارمقایسه ها قرار گرفت. اندازه گیری شاخص های رشد گیاهی نشان داد اثر ساده فصل کاشت و آبیاری بر طول خورجین اصلی و فرعی، تعداد دانه در خورجین اصلی و فرعی و عملکرد دانه معنی دار گردید. اثر متقابل فصل کاشت و آبیاری بر طول خورجین اصلی و فرعی، تعداد دانه در خورجین اصلی معنی دار نگردید. ولی بر تعداد دانه در خورجین فرعی و عملکرد دانه معنی دار گردید. در نتیجه با افزایش طول خورجین و تعداد دانه در خورجین اصلی و فرعی عملکرد دانه نیز افزایش یافت.
In order to study the impact planting season and moisture stress on the yield formation and yield components of spring cultivars of rapeseed an experimental field was performed during 2008-2009 in Qazvin research station , Iran. It was performed in form of Split-plot factorial based on RBD with three replications. The main factor was considered as the growing season condition in two levels including the autumn planting (10/02/2008 ) season and spring planting (03/02/2009) season. Irrigation was performed at two levels including usual irrigation as control and stop of irrigation when flowering stage onwards and four cultivars consist of RGS003, Sarigol, Hyola401 and Option500 were selected as subplots. In order to calculate traits such as main and sub pod length, the number of grain in main and sub- pod and yield formation. After sampling from different stages of growth parameters measurement, the results showed that tested traits due to field management operations such as growing season and moisture stress are corrected. Results showed that the simple effect of planting and irrigation season on the main and sub-pod length, number of grain in main and sub-pod and grain yield became meaningful and the interaction effect of planting and irrigation season on the main and sub-pod length, and the number of gain in main pod did not be meaningful but on grain number and grain yield in sub pod was meaning. Thus with increasing pod length and number of grain in main and sub pod, grain yield will be increased too.
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