اثرات دگرآسیبی توق (Xanthium strumarium L.) بر جوانه‌زنی و رشد گیاهچه‏ ای ماش (Vigna radiata L. Wilczek)

نوع مقاله : مقالات پژوهشی

نویسنده

دانشگاه آزاد اسلامی-واحد شوشتر

چکیده

این تحقیق با هدف تعیین چگونگی تأثیر غلظت‏های مختلف عصاره آبی و بقایای خشک‌شده علف‌هرز توق بر خصوصیات جوانه‏زنی و گیاهچه‏ای ماش در شرایط آزمایشگاهی و در گلخانه (دانشگاه آزاد اسلامی واحد شوشتر) به‏صورت دو آزمایش مجزا و در قالب طرح کاملاً تصادفی با چهار تکرار در سال 1397 انجام گرفت. در بخش آزمایشگاهی، تیمارها شامل غلظت‏های مختلف عصاره آبی توق با غلظت (0، 3، 6 و 9 درصد) و در بخش گلخانه‏ای استفاده از پودر خشک‌شده گیاه کامل توق با مقادیر (0، 90، 180 و 270 گرم) به‏صورت اختلاط کامل با خاک و یا قراردادن در سطح خاک گلدان انجام گرفت. نتایج نشان داد که عصاره‏های آبی توق بر شاخص‏های رشد گیاهچه‏ای ماش اثر بازدارندگی داشته است؛ به‏طوری‌که میانگین سرعت جوانه‏زنی، وزن خشک گیاهچه و طول ساقه‏چه در تیمار عصاره آبی 9درصد نسبت به تیمار شاهد (0)، به‏ترتیب 7/27 ، 92 و 31 درصد کاهش یافت. افزایش غلظت عصاره به شدت مانع رشد ساقه‏چه شد. قرار‌گرفتن بقایای گیاهی (ریشه، ساقه، برگ و گل) در سطح خاک در مقایسه با اختلاط آن به طور قابل‌توجهی از جوانه‏زدن و رشد گیاه در گلدان‏ها جلوگیری کرد؛ به‏طوری‌که درصد خروج و سرعت خروج گیاهچه در تیمار سه گرم توق در شرایط اختلاط با خاک نسبت به تیمار شاهد به ترتیب کاهش 16 درصد و عدم کاهش را نشان داد، درحالی‌که در شرایط قرار‌گرفتن در سطح خاک مقدار کاهش نسبت به شاهد به ترتیب 78 و 51 درصد بود. با افزایش مقدار پودر خشک‌شده توق اثرات بازدارندگی در کلیه صفات اندازه‏گیری‌شده بیشتر شد. این تحقیق نشان داد که علف‌هرز توق دارای اثرات دگرآسیب آشکاری بر جوانه‏زنی و رشد گیاهچه‏ای ماش است و این اثرات در شرایط آزمایشگاهی نسبت به کشت گلخانه‏ای شدیدتر می‏باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Allelopathic effects of Xanthium strumarium L. on germination and seedling growth of Mung bean (Vigna radiata L. Wilczek)

نویسنده [English]

  • saeed saeedipour
Shoushtar Branch, Islamic Azad University
چکیده [English]

Introduction
Xanthium strumarium (Cocklebur) is a genus of flowering plants in the family Asteraceae, native to the America, Eastern Asia, South Africa and Australia. It is coarse, herbaceous annual plant growing to 50-120 cm tall, which invades agricultural lands. Its seedlings and seeds contain the glycoside carboxyatractyloside and can be poisonous to animals, including cattle, horses and pigs. Its successful spread in so many parts of world has mainly attributed to its allelopathic properties, which enable it to complete effectively with native crops and/or pasture species. Vigna radiata is an important food legume cultivated in rainfed areas in the west and northwest of Iran. One of the main reasons of its lower yield is competition from weeds, because it does not compete well with weeds. Thus, weeds reduce yield and quality of mungbean through competition for light, moisture and nutrient. This study was aimed at determining the possible effects of the widespread weed X. strumarium L. whole plant A.E. on germination and seedling growth of mungbean under laboratory and greenhouse conditions
 
Materials and Methods
Naturally growing common cocklebur plants around our university campus were randomly uprooted and collected during flowering stage in August 2018. The plants were immediately brought to laboratory and the whole plant cut into 2 to 3 cm pieces, air-dried in greenhouse and ground in a mill of 2 mm sieve size. Then 3, 6 and 9 g of ground materials were mixed in 100 ml distilled water and soaked for 24 h at room temperature (21 to 22 oC) and filtered through four layers of cheesecloth. The aqueous extracts were stored in conical flasks in dark until use. Both in laboratory bioassays or greenhouse studies were done from August to December, 2018 and the rates of 90, 180 and 270 g powdered material or 3, 6 and 9% extracts were based on the previous studies.
 
Results and Discussion
Results showed that mean rate of germination in control treatment was higher than that of other treatments, but there was not any significant difference between control and 3% treatment. The lowest value for this trait belonged to aqueous extract i.e. 9%. The increase in X. strumarium L. A.E. concentration was concomitant with decrease of the mean rate of mungbean seed germination. In this case, there was a negative linear regression between A.E. concentration and plumule length as well. It is noteworthy that decrease in germination rate led to a delayed emergence and poor establishment of mungbean seedlings. X. strumarium A.E. did not adversely influence plumule dry weight of mungbean in the 3% A.E. treatment, compared to the control. The A.E. concentrations of 6 and 9% resulted in significant reduction of 20.87 and 30.97% in plumule length compared with those of the control, respectively. The soil incorporation of dry mix residues decreased both germination and seedling growth of mungbean. There was an increase in inhibitory effect with increase in amount of dry residues incorporated. However, no significant difference was observed between control and 90 g for both germination (%) and rate, and root and shoot lengths. Compared to soil incorporated dry mix residues, the soil surface applied dry whole plant residues drastically inhibited the mungbean germination and seedling growth. This is congruent with previous report. All rates of soil surface placed X. strumarium dry mix residues significantly inhibited the mungbean seedling emergence (%) and rate and root and shoot lengths over the control.
 
Conclusion
High concentrations of X. strumarium L. A.E. negatively influenced seed germination rate, plumule length and seedling dry weight of mungbean. However, their effects were not considerable at low concentrations. In conclusion, we can claim that mismanagement of weed population in field condition especially high densities of X. strumarium L. weed and presence of high concentrations of water soluble chemicals produced by this weed adversely influence early growth (delayed emergence and dwarf and weak seedlings) of mungbean plants. Eventually, this trend negatively influences homogenous emergence of plants and the result would be plants susceptible to biotic and abiotic stresses, leading to very low marketable yields.

کلیدواژه‌ها [English]

  • Aqueous extract
  • Herbal Remnants
  • Incorporation
  • Seedling growth
  1. Alsadawi, I.S., and Salih, N.M.M. 2016. Allelopathic potential of Cyperus rotundus I. Interference with crops. Allelopathy Journal 23: 297-304.
  2. Alshahrani, T.S., Hicks, R.R., Verlinden, S., and Siedel, G.E. 2017. Effects of leaf extract of Zizyphus spina-christi and Prosopis juliflora on each other's seedling roots. Allelopathy Journal 23: 111-1
  3. Batlang, U., and Shushu, D.D. 2015. Allelopathic activity of sunflower (Helianthus annuus) on growth and nodulation of Bambara groundnut [Vigna subterranean (L.) Verdc.]. Journal of Agronomy 6: 541-547.
  4. Belz, R.G. 2014. Stimulation versus inhibition bioactivity of parthenin, a phytochemical from Parthenium hysterophorus Dose Response 6: 80-96.
  5. Blum, U., Shafer, S.R., and Lehman, M.E. 2014. Evidence for inhibitory allelopathic interactions involving phenolic acids in field soils: Concepts vs. An experimental model. Critical Review of Plant Science 18: 673-6
  6. Chon, S.U., Jang, H.G., Kim, D.K., Kim Y.M., Boo, H.O., and Kim, Y.J. 2015. Allelopathic potential in lettuce (Lactuca sativa) plants. Science of Horticulture 106: 309-317.
  7. Chung, I.M., Ahn, J.K., and Yun, S.J. 2010. Assessment of allelopathic potential of barnyard grass (Echinochloa crusgalli) on rice (Oryza sativa) cultivars. Crop Protection 20: 921-928.
  8. Cutler, H.G., and Cole, R.J. 2012. Carboxyatractyloside a compound from Xanthium strumarium and Atractylis gummifera with plant growth inhibiting properties. Journal in Natural Production 46: 609-6
  9. Decoteau, D.R. 2013. Vegetable Crops. The Pennsylvania State University, USA. p: 324-333.
  10. Ellis, R.H., and Roberts, E.H. 1980. In: Towards Rational Basis for Testing Seed Quality, P.D. Hebblethwaite (E). Butterworths, London. p: 605-635.
  11. Ghasemi-Golezani, K., Aloloo, A.A., Valizadeh, M., and Moghaddam, M. 2008. Effects of hydro and osmo-priming on seed germination and field emergence of lentil (Lens culinaris). Notulae Botanicae Horti Agrobotanici Cluj-Napoca 36: 29-33.
  12. Gholami, S., Salehi, A., and Moradi, A. 2015. Effects of maternal plant nutrition on the absorption of some nutritional elements and germination characteristics of Cumin (Cuminum cyminum). Iranian Journal of Seed Science and Technology 4(1): 119-118. (In Persian).
  13. Haig, T. 2016. Allelochemical in P In: Allelopathy in Sustainable Agriculture and Forestry, Zeng, A.U. Mallik and S.M. Suo (Eds.). Springer-Verlag, New York, USA. p: 63-104.
  14. Ismail, B.S., and Chong, T.N. 2017. Allelopathic effects of Dicranopteris linearis debris on common weeds of Malaysia. Allelopathy Journal 23: 277-2
  15. Kiarostami, K. 2004. The study on allelopathic effects of some weeds on germination and seedling growth of different cultivars of wheat. Agronomy and Horticulture 61: 66-72.
  16. Luciani, S., Martini, N., and Santi, R. 2010. Effects of carboxyatractyloside, a structural analogue of atractyloside, on mitochondrial oxidative phosphorylation. Life Science 10: 961-9
  17. Maguire, J.D. 1962. Speed of germination-aid in selection and evaluation for seedling emergence and vigour. Crop Science 2: 176-1
  18. Raman, R., and Krishnamoorthy, R. 2015. Nodulation and yield of mung bean (Vigna radiate) influenced by integrated weed management practices. Legume Research 28(2): 128-130.
  19. Rashedmohassel, M.J., and Mousavi, S.K. 2007. Principles of Weed Management. Ferdowsi University of Mashhad Publication, Iran. (In Persian). P: 290.
  20. Shajie, E., and Saffari, M. 2007. Allelopathic effects of Clocklebur (Xanthium strumarium) on germination and seedling growth of some crops. Allelopathy Journal 19: 501-5
  21. Singh, K.N., Bulis, A.S., Shah, M.H., and Khanday, B.A. 2012. Effect of spacing and seed rate on yield of green gram (Vigna radiate) in Khashmirvally. Indian Journal of Agricultural Science 61: 326-327.
  22. Singh, H.P., Batish, D.R., Pandher, J.K., and Kohli, R.K. 2016. Phytotoxic effects of Parthenium hysterophorus residues on three Brassica species. Weed Biology Management 5: 105-09.
  23. Stephen, W.A., and Sowerby, M.S. 2013. Allelopathic potential of weed, Parthenium hysterophorus in Australia. Plant Protection Quart 11: 20-23.
  24. Tanveer, A., Tahir, M., Nadeem, M.A., Youniss, M., Aziz, A., and Yaseen, M. 2008. Allelopathic effects of Xanthium strumarium on seed germination and seedling growth of crops. Allelopathy Journal 21: 317-328.
  25. Teasdale, J.R., and Mohler, C.L. 2016. The quantitative relationship between weed emergence and the physical properties of mulches. Weed Science 48: 385-3
  26. Wang, J.C., Wu, Y., Wang, Q., Peng, Y.L., Pan, K.W., Luo, P., and Wu, N. 2017. Allelopathic effects of Jatropha curcas on marigold (Tagetes erecta). Allelopathy Journal 24: 123-131.