بررسی عکس العمل دورگ‏های زودرس پنبه ازنظر عملکرد و اجزاء عملکرد درکشت دوم

نوع مقاله : مقاله پژوهشی

نویسندگان

1 محقق موسسه تحقیقات پنبه کشور

2 موسسه تحقیقات پنبه کشور

چکیده

این آزمایش با هدف بررسی واکنش دور‎گ‎های زودرس ازنظرعملکرد و اجزا عملکرد در کشت دوم بصورت کرت‎های خرد شده در قالب طرح بلوک‎های کامل تصادفی با دو عامل در چهار تکرار مورد بررسی قرار گرفت. عامل اصلی این آزمایش سه تیمارکشت محصول زمستانه شامل گندم، کلزا، بدون‎کشت و عامل فرعی دارای شش تیمار پنبه بصورت کشت دوم بهاره شامل رقم سپید و دور‎گ‎های 30-SKT-133، 30-N29-80، 30-TBL-180، 30-SKG-43 و 30-TBL-61 بود. نتایج نشان داد کشت پنبه بعد از محصولات زمستانه باعث کاهش عملکردکل، عملکرد چین اول، تعداد قوزه، وزن قوزه وسرعت سبز شدن گردید. با اینکه عملکردکل و عملکردچین اول پنبه بعداز کشت محصول‎ زمستانه کلزا و گندم کمتراز تیمار بدون‎کشت بود و عملکرد وش تولید شده پنبه در تیمار بعداز گندم بیشتر از تیمارکلزا بود اما اختلاف آن‎ها معنی‎دارنبود. همچنین تاثیر تیمار گندم با تیمار بدون‎کشت از نظر زودرسی‎ وش با پنبه برابر بود و بر تیمار کلزا برتری داشت. دورگ 30-SKG-43 بیشترین عملکرد پنبه را در تیمار بدون‎کشت و بعداز گندم نسبت به سایر دور‎گ‎ها داشت اما تاثیر تیمار کلزا باعث شد این دورگ تقریبا برابر با سایر دور‎گ‎ها عملکرد وش تولید نماید و بیشترین عملکرد چین اول و زودرسی دردورگ 30-SKT-133 مشاهده شد. دردور‎گ‎های مورد بررسی در افزایش عملکردکل و عملکرد چین اول بیشترین تاثیر را افزایش تعداد قوزه و سپس وزن قوزه داشت.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of reaction successful early matured cotton crosses on yield and Yield components as double cropping

نویسندگان [English]

  • A. Ghajari 1
  • O. Alisha 2
  • S.J. Mirgasemi 2
1 Researcher of Cotton Research institution of Iran
2 Cotton Research institution of Iran
چکیده [English]

This experiment was carried out in split plot by using randomized complete block design with 2factors in 4 replications. The objective of this study was evaluation reaction on yield and yield components and earlymatured cotton crosses as a double crop. Main plots, were include 3winter crop,wheat, canola, and nofallow, and Subplots were 6 cotton crosses including sepid(control), 30-SKT-133, 30-N29-80, 30-TBL-180, 30-SKG-43,and 30-TBL-61. The Results showed that rate of emergence, yield, first harvesting yield, number of bolls and boll weight were decreased by planting of cotton after winter crops. Although the total yield and first harvesting yield of cotton after canola,and wheat were less than treatments nofallow. Seedcotton yield after wheat was more then yield after canola  but these treatments didn't have significant differences. Earliness in cotton after wheat was same in nofallow treatment, but this is superior on canola treatments. 30-SKG-43 crosses had the highest cotton yield in nofallow and wheat treatment. This crosses in canola treatments produced almost with the other cross. 30-SKT-133 had the highest yield on first harveting and earliness percentage. In investigation crosses, seedcotton yield was increased and first harvesting had the hieghest impact by increasing number of bolls than boll weight.

کلیدواژه‌ها [English]

  • Doublecrop
  • Early matured crosses
  • cotton
  • Sepid Cultivar
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