بررسی عملکرد دانه و صفات کیفی ذرت شیرین (Zea mays L.var. Sacarata) تحت تیمارهای کم‌آبی، تشعشع فرابنفش و ازدیاد دی‌اکسید کربن

نوع مقاله : مقاله پژوهشی


1 دانشجوی کارشناسی ارشد گروه زراعت، دانشکدۀ کشاورزی دانشگاه تربیت مدرس، تهران

2 استاد فیزیولوژی گیاهان زراعی، گروه زراعت دانشکدۀ کشاورزی دانشگاه تربیت مدرس، تهران، بزرگراه جلال آل احمد، پل نصر، دانشگاه تربیت مدرس، دانشکدۀ کشاورزی، گروه زراعت

3 دانشیار دانشکدۀ علوم زیستی دانشگاه تربیت مدرس، گروه علوم گیاهی

4 دانشجوی کارشناسی ارشد دانشگاه پیام نور واحد کرج

5 استادیار گروه آبیاری دانشکدۀ کشاورزی دانشگاه زنجان


تابش فرابنفش، کم‌آبی و افزایش دی‌اکسید کربن از مهم‌ترین عوامل محیطی در تغییر اقلیم جهانی‌اند. به همین منظور این پژوهش در گلخانۀ تحقیقاتی دانشکدۀ کشاورزی دانشگاه تربیت مدرس تهران در سال 1390 با هدف بررسی عملکرد دانه و برخی صفات کیفی ذرت شیرین تحت سطوح مختلف دی‌اکسید کربن (500، 900 و 1300 میکرولیتر بر لیتر هوا)، اشعۀ فرابنفش (UV-A, B, C) و سطح آب آبیاری (آبیاری کامل یا عدم تنش خشکی و کمبود آب به‌مقدار 60 درصد ظرفیت زراعی) به‌صورت آزمایش فاکتوریل در قالب طرح پایۀ بلوک‌های کامل تصادفی در سال 1390 اجرا شد. نتایج نشان داد که اثر متقابل دی‌اکسید کربن، کم‌آبی و تابش فرابنفش، تأثیر شایان توجهی در عملکرد دانه و Fv/Fm داشت و بیشترین عملکرد دانه در اثر تیمار شاهد آبیاری و غلظت 900 میکرولیتر بر لیتر هوا با UV-A به‌دست آمد. بیشترین میزان Fv/Fm در شرایط اعمال کم‌آبی و غلظت 1300 میکرو‌لیتر بر لیتر هوا دی‌اکسید کربن با UV-C به‌دست آمد. اثر متقابل کم‌آبی با
دی‌اکسید کربن (900 میکرولیتر بر لیتر هوا) مقدار پرولین، کلروفیلa، کلروفیلb، کلروفیلa+b، کارتنوئیدها و فلاونوئیدها را کاهش داد. پروتئین دانه نیز با کاهش طول موج تابش فرابنفش کاهش یافت. بدین ترتیب سه تنش عمدۀ محیطی با کاهش توان تولیدی گیاه، مقدار عملکرد آن را کاهش داد.


عنوان مقاله [English]

Studing grain yield and quality traits of sweet corn (Zea mays L. var. Sacarata) under water deficit, ultraviolet radiation and increasing carbon dioxide treatments

نویسندگان [English]

  • Habibah Jahanbakhsh 1
  • Seyed Ali Mohammad Modarres Sanavy 2
  • Faezeh Ghanati 3
  • Akbar Tavakkoli 1
  • Mehrdad Moradi-Ghahderijani 4
  • Mehdi Panahi 5
1 M.Sc. students in Agronomy Department, Faculty of Agriculture, Tarbiat Modares University
2 Professor in Crop Physiology, Agronomy Department, Faculty of Agriculture, Tarbiat Modares University, Nasr Bridge, Tehran, Iran
3 Associate Professor in Plant Science Department, Faculty of Biological Sciences, Tarbiat Modares University, I.R. of IRAN
4 M.Sc. student in Agronomy, Karaj Payamnour University
5 Assistant Professor, Faculty of Agriculture, Zanjan University
چکیده [English]

Water deficit, ultraviolet radiation and carbon dioxide enrichment are the most important environmental factors in global climate change. This research was conducted in Tarbiat Modares University, Research Greenhouse and the objective of that was to study the effects of three levels of carbon dioxide (500, 900 and 1300 ppm), UV-radiation (UV-A, B and C with intensity of 18, 25 and 40 µW.cm2 respectively) and water deficit (common irrigation and 40 percent of available water remain in soil) on grain yield, some quality traits of sweet corn (Zea mays L. var. Sacarata). The experiment was conducted as factorial arrangement in randomized complete block design with three replications in one year (2009). The results showed that interaction among UV-C radiation, elevated CO2 and water stress had a significant effect on grain yield and Fv/Fm. The highest grain yield was obtained in water deficit and 900 (µl/l) CO2 concentration. The most content Fv/Fm was obtained under water deficit and 1300 (µl/l) CO2 concentration. Water deficit and elevated CO2 increased proline, and decreased chlorophyll a, chlorophyll b, chlorophyll a+b, carotenoids and flavonoids. Grain protein decreased with wavelength UV reduction. Above result showed that three main environmental stresses reduced plant productivity strategy in most condition and as a result decreased the performance of corn plant.

کلیدواژه‌ها [English]

  • carbon dioxide
  • sweet corn
  • Ultraviolet radiation
  • Water deficit
  • Grain yield
  1. Abdel-Nasser, L. & Abdel-Aal, E. (2002). Effect of elevated CO2 and drought on proline metabolism and grow of safflower (Carthamus mareoticus L.) seedeling whitout improving water status. Pakistan Journal of Biological Sciences, 5(5), 523-528.   
  2. Ainawotrth, E.A., Rogers, A., Nelson, R. & Long, S. (2004). Testing the source-sink hypothesis of down-regulation of phptosynthesis in elevated CO2 in the field with single gene substitutions in Glycine max. Agricultureand Forest Meteorology, 122, 58-94.
  3. Agrawal, S. B. (1992). Effects of supplemental UV-B radiation on photosynthetic pigment, protein and glutathione content in green algae. Environmental and Experimental Botany. 32, 137-143
  4. Alexieva, V., Sergiv, I., Mapelli, S. & Karanov, E. (2001). The effect og drought and ultraviolet radiation on growth and stress markers in pea and wheat. Plant Cell and Environment. 24,1337-1344.
  5. Ashraf, M. Y., Azmi, A. R., Khan, A. H. & Ala, S.A. (1994). Effect of water stress on total phenols, proxidase activity and chlorophyll content in wheat. ActaPhysiolo.Planta, 16(3), 185-191
  6. Baloochi, H. R., Modares sanavy, S. A. & Emam, Y. (2009). Effect of Water Deficit, Ultraviolet Radiation and Carbon Dioxide Enrichment on Quantitative Traits of Durum Wheat (Triticum turgidum L. var. Durum Desf.). Journal of Science and Technology of Agriculture and Natural Resources, 45, 167-181.
  7. Bertamini, M., Nedunchezhian, N. & Zulini, L. (2006). Effect of water deficiet on Photosynthetic and other physiological responses in grapevine (Vitisvinifera L. cv. Riesling) plants. Photosynthetica, 44(1), 151-154.
  8. Bates, L. S., Waldern, R. P. and Teare, I. D. (1973). Rapid determination of free proline for water stress studies. Plant and Soil. 39, 205-208.
  9. Casaty, P., Lara M. V. & Andreo, C. S. (2002). Regulation of enzyme involved in C4 Photosynthesis and antioxidant metabolism by UV-B radiation in submersed aquatic species. Photosynthesis Research, 71, 251-264.
  10. Castrillo, M. & Turujillo, I. (1994). Ribulose-1, 5-bisphosphate carboxylase activity and chlorophyll and protein contents in two cultivares of French bean under water stress and rewatering. Photosynthetica, 30, 175-181.
  11. Correia, C.M., Pereira, J. M., Bjorn, L.O. & Torres-Pereira, J. M. G. (2005). Ultraviolet radiation and nitrogen affect the photosynthesis of Maize. European Journal Agronomy, 22, 337-347.
  12. Donnelly, A., Jones, M.B., Burke, J.I. & Schenieders, B.  (2000). Elevated  provides Protection from O3 iduced photosynthetic damage and chlorophyll loss flag leaves of spring wheat. Agriculture, Ecosystems and Environment, 80, 159-168.
  13. Finnan, J. M., Donnelly, A., Burke, J. I. & Jones M. B. (2002). The effects of elevated concentration of carbon dioxide and ozone on potato yield. Agriculture Ecosystems and Environment, 88, 11-22.
  14. Fitzgerald, L. B. & Edwin L. F. (2005). The role of ozone flux and antioxidants in the suppression of ozone injury by elevated CO2 in soybean. Journal of Experimental Botany, 56,(418), 2139–2151.
  15. Interdonato, R., Mariana, R., Cecilia, B. N., González, A.  & Prado, H. E. (2011). Effects of low UV-B doses on the accumulation of UV-B absorbing compounds and total phenolics and carbohydrate metabolism in the peel of harvested lemons. Environmental and Experimental Botany, 70, 204–211.
  16. IPCC, (2001).The scientific basis. In: Houghton, J. T. eds. Third assessment report of the Intergrovmental Panel on Climate Change. Cambridge: Cambridge University Press.
  17. Krizek, D. T., Brita, S. J. & Miewcki R. M. (1998). Inhibitory effects of ambient level of solar UV-A and UV-B on growth of cv. New Red Fire Lettuce. Plant Physiology, 103, 1-7
  18. Kulshreshth, S., Mishara D. P. & Gupata R. K. (1987). Change in contents of chlorophyll, proteins and lipids in whole chloroplast and chloroplast membrance fractions of different leaf water potentials in drought resistant and sensitive genotype of wheat. Photosynthetica, 21, 65-70.
  19. Li, F., Chen, Sh. L. P. M. & Hou, Y. P. (2010). A meta-analysis of the responses of woody and herbaceous plants to elevated ultraviolet-B radiation. Acta Oecologica, 36 , 1–9.
  20. Li, J., Zhou, J. M. & Duan, Z. Q. (2007) Effects of elevated CO2 concentration on growth and water usage of tomato seedling under different ammonium [nitrate ratios,]. Environmental Sciences, 19, 1100-1107.
  21. Noorments, A., Kull, O., Sober, A., Kubiske M. E. & Karaosky, D. F. (2010). Elevated CO2 response of photosynthesis depends on ozone concentration in aspen. Environmental Pollution, 158, 992–999.
  22. Nogues, S. & Baker, N.R. (2000). Effects of drought on photosynthesis in Mediterranean plants grown under enhanced UV-B radiation. Journal of Experimental Botany, 348, 1309-1317.
  23. Oktem, a. (2008). Effect of water shortage on yield, and protein and mineral compositions of drip-irrigated sweet corn in sustainable agriculture systems. Agricultural Water Management, 95, 1003-1010
  24. Prasad, S. M., Dwivedi, R. & Zeeshan, M. (2005). Growth, photosynthetic electron transport, antioxidant responses of young soybean seedlings to simultaneous exposure of nickel and UV-B stress. Photosynthetica, 43, 177–185.
  25. SAS Institute Inc. (1997). SAS/ STAT user’s guide. version 6, 4th ed. SAS Institute. Cary, NC, USA.
  26. Shao, H.B., Liang, Z.S., Shao, M.A. & Sun Q. (2005). Dynamic change of anti-oxidative enzymes of 10 wheat genotypes at soil water deficits. Colloids and Surfaces B, 42, 187-195.
  27. Smrkolj, P., Stibilj, V., Kreft, I. & Germ, M. (2005). Selenium species in buckwheat cultivated with foliar addition of Se and various levels of UV-B radiation. Food Chemistry, 1, 234-376.
  28. Steel, R.G.D. & Torrie, J.H. (1998). Principles and procedure of statistics: a biometric approach. Ed’s R.G. Summerfield, A.H. Bantingpp, 17-36.
  29. Teramura, A.H., Sullivan, J.H. & Lyden, J. (1990). Effects of UV-B radiation on soybean yield and seed quality: A 6-year field study. Physiologia Plantarum, 50, 5-11.
  30. Torbert, H.A., Prior, S.A., Rogers, H.H. & Runion, G.B. (2004). Elevated atmospheric CO2 effects on N fertilization in grain and soybean. Field Crops Research, 88, 57-67.