Access the full text.
Sign up today, get DeepDyve free for 14 days.
R. Hegde, Darrell Miller (1992)
Concentration Dependency and Stage of Crop Growth in Alfalfa AutotoxicityAgronomy Journal, 84
R. Hedge, D. Miller (1990)
Allelopathy and autotoxicity in alfalfa: characterization and effects of preceding crops and residue incorporation.Crop Science, 30
M. Hall, P. Henderlong (1989)
Alfalfa autotoxic fraction characterization and initial separationCrop Science, 29
Read Read, Jensen Jensen (1989:)
Phytotoxicity of water‐soluble substances from alfalfa and barley soil extracts on four crop speciesJ. Chem. Ecol., 15,
Banwart Banwart, Porter Porter, Granato Granato, Hassett Hassett (1985:)
HPLC separation and wavelength area ratios of more than 50 phenolic acids and flavonoidsJ. Chem. Ecol., 11,
V. Newby, R. Sablon, R. Synge, K. Casteele, C. Sumere (1980)
Free and bound phenolic acids of lucerne (Medicago sativa cv europe)Phytochemistry, 19
Chung Chung, Miller Miller (1995a:)
Effect of alfalfa plant and soil extracts on germination and seedling growthAgron. J., 87,
Darrell Miller (1996)
Allelopathy in Forage Crop SystemsAgronomy Journal, 88
C. Chou, Lih-Ling Leu (1992)
Allelopathic substances and interactions ofDelonix regia (Boj) RafJournal of Chemical Ecology, 18
Newby Newby, Sablon Sablon, Synge Synge (1980:)
Free and bound phenolic acids of alfalfa ( Medicago sativa cv. Europe)Phytochemistry, 19,
S. Chon, J. Coutts, C. Nelson (2000)
Effects of light, growth media, and seedling orientation on bioassays of alfalfa autotoxicity.Agronomy Journal, 92
S. Chon, C. Nelson (2001)
EFFECTS OF EXPERIMENTAL PROCEDURES AND CONDITIONS ON BIOASSAY SENSITIVITY OF ALFALFA AUTOTOXICITYCommunications in Soil Science and Plant Analysis, 32
I. Chung, Darrell Miller (1995)
Effect of Alfalfa Plant and Soil Extracts on Germination and Growth of AlfalfaAgronomy Journal, 87
I. Chung, Darrell Miller (1995)
Differences in Autotoxicity among Seven Alfalfa CultivarsAgronomy Journal, 87
Chon Chon, Coutts Coutts, Nelson Nelson (2000:)
Effects of light, growth media, and seedling orientation on a seedling assay of alfalfa autotoxicityAgron. J., 92,
Autotoxicity restricts reseeding of alfalfa (Medicago sativa L.) after alfalfa until autotoxic chemical(s) breaks down or is dispersed into external environments. A series of aqueous extracts from leaves, stems, roots and seeds of alfalfa ‘Vernal’ were bioassayed against alfalfa seedlings of the same cultivar to determine their autotoxicity. The highest inhibition was found in the extracts from the leaves. Extracts at 40 g dry tissue l−1 from alfalfa leaves were 15.4, 17.5 and 28.7 times more toxic to alfalfa root growth than were those from roots, stems and seeds, respectively. A high‐performance liquid chromatography (HPLC) analysis with nine standard compounds showed that the concentrations and compositions of allelopathic compounds depended on the plant parts. In leaf extracts that showed the most inhibitory effect on root growth, the highest amounts of allelochemicals were detected. Among nine phenolic compounds assayed for their phytotoxicity on root growth of alfalfa, coumarin, trans‐cinnamic acid and o‐coumaric acid at 10−3 m were most inhibitory. The type and amount of causative allelochemicals found in alfalfa plant parts were highly correlated with the results of the bioassay, indicating that the autotoxic effects of alfalfa plant parts significantly differed.
Journal of Agronomy and Crop Science – Wiley
Published: Aug 1, 2002
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.