Full TGIF Record # 23615
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Web URL(s):https://academic.oup.com/aob/article/68/3/201/213886/
    Last checked: 03/01/2017
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Publication Type:
i
Refereed
Author(s):Pearce, Deborah M. E.; Jackson, Michael B.
Author Affiliation:Department of Agricultural Sciences, University of Bristol, AFRC Institute of Arable Crops Research, UK
Title:Comparison of growth responses of barnyard grass (Echinochloa oryzoides) and rice (Oryza sativa) to submergence, ethylene, carbon dioxide and oxygen shortage
Source:Annals of Botany. Vol. 68, No. 3, September 1991, p. 201-209.
Publishing Information:London, Oxford University Press
# of Pages:9
Keywords:TIC Keywords: Stress; Growth rate; Echinochloa crusgalli; Ethylene; Weeds; Carbon dioxide
Abstract/Contents:"Unlike germination of wheat (Triticum aestivium), millet (Eleucine coracana), and sorghum (Sorghum caudatum), that of Echinochloa oryzoides (barnyard grass) and Oryza sativa (rice) was not inhibited by poorly aerated solutions with 11 kPa oxygen (equilibrium partial pressure) or less. In the dark, seedling shoots of rice included a coleoptile, and in Echinochloa, a mesocotyl also. Growth in fresh and dry weight of shoots was strongly depressed by poorly aerated solutions in both rice and Echinochloa but the effects on extension differed in the two species. In rice, coleoptile extension was promoted by solutions partly depleted of oxygen, and also by the absence of oxygen. The stimulation in partly de-oxygenated solutions resulted from the combined promoting effects of small oxygen partial pressures, carbon dioxide, ethylene and bouyant tension. In contrast, these treatments neither promoted nor inhibited elongation by the Echinochloa coleoptile while severely inhibiting extension of the mesocotyl. Overall, poorly aerated solutions lenghtened the shoot of rice and shortened it in Echinochloa when compared with those submerged in well-aerated soluions. These opposite effects were brought about by the same gaseous changes, i.e. oxygen shortage, elevated ethylene and carbon dioxide. The effect on Echinochloa was almost entirely restricted to the mesocotyl; coleoptile extension being remarkably insensitive to large increases in ethylene and carbon dioxide, or to extreme oxygen shortage. Seedings of the two species thus have contrasting strategies for survival."
Language:English
References:0
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Pearce, D. M. E., and M. B. Jackson. 1991. Comparison of growth responses of barnyard grass (Echinochloa oryzoides) and rice (Oryza sativa) to submergence, ethylene, carbon dioxide and oxygen shortage. Ann. Bot. 68(3):p. 201-209.
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https://academic.oup.com/aob/article/68/3/201/213886/
    Last checked: 03/01/2017
    Requires: PDF Reader
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