اثر شدت و زمان تنش خشکی بر ویژگی‌های زراعی دو رقم لوبیا

نویسندگان

1 دانشگاه شهرکرد

2 مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان چهارمحال و بختیاری

چکیده

به‌منظور بررسی شدت و زمان تنش خشکی بر ویژگی‌های زراعی و تحمل خشکی دو رقم لوبیا (Phaseolus vulgaris L.)، آزمایشی به‌صورت اسپیلیت پلات فاکتوریل در قالب طرح بلوک‌های کامل تصادفی با سه تکرار در دانشگاه شهرکرد طی سال‌های 1392 و 1393اجرا شد. تیمارهای تنش خشکی در مراحل رشد رویشی (V4)، گل‌دهی (R5) و پرشدن غلاف (R7) و مقادیر آب آبیاری 60، 80 و 100‌درصد آبیاری کامل در نظر گرفته شدند. نتایج نشان داد که بیشترین تعداد دانه در غلاف در لوبیاچیتی تلاش با ‌آبیاری 80 ‌درصد بود. بیشترین وزن صد دانه مربوط به لوبیاچیتی تلاش و سفید دانشکده در آبیاری 80‌ درصد بود. بیشترین وزن صد دانه از تنش در مرحلۀ پرشدن غلاف آمد. بیشترین تعداد غلاف در بوته از لوبیاچیتی تلاش با آبیاری 100‌ درصد در مرحلۀ رویشی و کمترین تعداد غلاف در بوته از لوبیاسفید دانشکده با آبیاری 60‌ درصد در مرحلۀ گل‌دهی حاصل شد. بیشترین عملکرد دانه از لوبیاچیتی تلاش با آبیاری 80‌درصد در مرحلۀ پرشدن غلاف به‌دست آمد. همچنین از نظر مقاومت به خشکی در دو رقم لوبیا، شاخص‌های تحمل (TOL) و حساسیت به تنش (SSI) تفاوت معنی‌داری نشان دادند.

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of Drought Stress Intensity and Stage on Agronomic Characteristics of Two Common Bean Cultivars

نویسندگان [English]

  • Mohammad Rafiiolhossaini 1
  • Foroud Salehi 2
  • Marziye Mazhari 1
1
2
چکیده [English]

In order to evaluate the intensity and stage of drought stress on agronomic characteristics and drought tolerance of common bean (Phaseolus vulgaris L.), a split plot factorial experiment was conducted in a randomized complete block design with three replications at Shahrekord University in 2013 and 2014. Drought stress treatments and levels of irrigation regimes were considered at vegetative growth (V4), flowering (R5) and pod filling (R7) stages and 60, 80 and 100 percent of full irrigation. The results showed that the maximum number of seeds per pod in Talash cultivar was related to 80 percent water deficit conditions. The maximum 100-seed weight for Talash and Daneshkadeh cultivars was belonging to 80 percent of irrigation. The maximum 100-seed weight was obtained from pod filling drought stress stage. The maximum number of pods per plant was belonging to Talash cultivar with 100 percent of irrigation at vegetative stage while the minimum number was obtained from Daneshkadeh cultivar with 60 percent of irrigation at flowering stage. The maximum grain yield was belonging to Talash cultivar with 80 percent of irrigation at pod filling stage. Also, in case of drought resistance in two bean cultivars, the tolerance and stress susceptibility indices (TOL and SSI) showed significant differences.

کلیدواژه‌ها [English]

  • Bean
  • Drought tolerance indices
  • Growth stages
  • Irrigation water amount
  • Stress tolerance
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