Results 171 to 180 of about 6,144 (221)

Regeneration from rhizome fragments of Agropyron repens

Annals of Applied Biology, 1977
SUMMARYExperiments were done with rhizome fragments of Agropyron repens with or without ‘late spring dormancy’. Increasing concentrations of KN03 from 1 to 210 ppm successively increased the percentage of buds released from dormancy, but the restriction of shoot extension was significantly lessened only when concentrations of nitrogen were 50 ppm or ...
R. R. B. LEAKEY, R. J. CHANCELLOR, D. VINCE‐PRUE   +2 more
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Agropyron repens ‐ allelopathy?

Annals of Applied Biology, 1976
ABSTRACTFollowing the work of Becholtz and Bandeen, a series of glasshouse experiments was made to examine the effects of root‐zone interference between Agropyron repens and wheat. In a solution‐culture experiment the reduction in growth of wheat due to the presence of A.
G. R. Sagar, D. E. F. Ferdinandez
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The C6-aldehyde-forming system in Agropyron repens

Biochimica et Biophysica Acta (BBA) - General Subjects, 1986
Abstract A vigorous formation of the volatile C 6 compounds typical of plant lipoxygenase/hydroperoxide lyase systems ( n -hexanal and hexenals) was observed in mechanically disrupted tissue of quick grass ( Agropyron repens ). Evidence for the precursor properties of linolenic acid and for the primary main cleavage product ( Z )-3-hexenal was ...
Ralf G. Berger, Adolf Kler, Friedrich Drawert   +2 more
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AN INTERPRETATION OF PHENOTYPIC PLASTICITY IN AGROPYRON REPENS (GRAMINAE)

American Journal of Botany, 1988
Phenotypic plasticity and genotypic variation were studied in Agropyron repens L. (Beauv.) collected from populations in two grassland communities which differed in the length of time since the last major disturbance. Twenty genotypes were collected from each population.
Douglas R. Taylor, Lonnie W. Aarssen
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Nucleoli in Agropyron repens, Beauv

Nature, 1943
DURING an investigation of the shoot apex of Agropyron repens, Beauv., longitudinal sections were obtained in which the nucleoli stood out in strong contrast to the rest of the nucleus. When this was noticed, counts were made and the maximum number per nucleus was found to be six.
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SYNTHETIC HYBRIDS OF NEW WORLD AND OLD WORLD AGROPYRONS II. AGROPYRON RIPARIUM X AGROPYRON REPENS

American Journal of Botany, 1965
Five hybrids were obtained from 12 seeds formed in 26 emasculated florets of A. riparium pollinated by A. repens. The hybrid plants were morphologically intermediate between the parents for vegetative and spike characteristics, although they resembled A. repens more closely than A. riparium. The 28‐chromosome A. riparium parent behaved cytologically as
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GENOME ANALYSIS OF AGROPYRON REPENS × AGROPYRON CRISTATUM SYNTHETIC HYBRIDS

American Journal of Botany, 1964
Hexaploid A. repens, 2n = 42, and diploid A. cristatum, 2n = 14, were hybridized and gave rise to two 28‐chromosome reciprocal hybrids. Approximately 1% of hand‐emasculated florets of both parent species produced viable hybrid seed following controlled pollination. Early embryo abortion prevented greater hybrid seed set on A. repens, whereas failure of
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Succession of fungi on decaying stems of Agropyron repens

Transactions of the British Mycological Society, 1958
The succession of fungi on decaying stems of Agropyron repens has been followed during a 19-month period after flowering. The patterns of fungal distribution follow broadly that already outlined for Dactylis glomerata . The colonization of flowering and non-flowering tillers in Agropyron is very similar.
H.J. Hudson, J. Webster
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A Cytogenetic Study of Agropyron stipaefolium and Its Hybrids with Agropyron repens

Bulletin of the Torrey Botanical Club, 1970
DEWEY, D. R. (Crops Research Lab., U.S.D.A., Utah State Univ., Logan, Utah). A cytogenetic study of Agropyron stipaefolium and its hybrids with Agropyron repens. Bull. Toriey Bot. Club 97: 315-320. 1970.-Meiosis anid fertility were studied in two collections of Agropyron stipaefolium Czern., a little known grass from European Russia.
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Organic acids from the anaerobic decomposition of Agropyron repens rhizomes

Phytochemistry, 1980
Abstract Phytotoxicity originating from the anaerobic decomposition of couch grass rhizomes has been studied. Short chain aliphatic (acetic, propionic and butyric) acids appear to be mainly responsible but hexanoic, succinic, phenylacetic, cinnamic, p -coumaric, 4-hydroxyphenylpropionic and 3,4-dihydroxyphenylpropionic acids are also present in the ...
James M. Lynch, Keith C. Hall, Hamish A. Anderson, Alan Hepburn   +3 more
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