biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 44:635-638, 2001 | DOI: 10.1023/A:1013731828945

Assessment of Allelopathic Potential of Root Exudate of Rice Seedlings

H. Kato-Noguchi1, T. Ino1
1 Department of Biochemistry and Food Science, Faculty of Agriculture, Kagawa University, Miki, Kagawa, Japan

To determine the allelopathic potential of root exudate from early developmental stage of rice (Oryza sativa L), 6-d-old seedlings of eight cultivars were grown with 3-d-old alfalfa (Medicago sativa L.), cress (Lepidium sativum L.) or lettuce (Lactuca sativa L.) seedlings in Petri dishes under controlled condition. All rice cultivars (cv. Norin 8, Kamenoo, Nipponbare, Kinuhikari, Koshihikari, Sasanishiki, Yukihikari and Hinohikari) inhibited growth of roots, shoots and fresh mass of alfalfa, cress and lettuce seedlings. Effectiveness of cv. Koshihikari was the greatest and more than 60% inhibition was recorded in all bioassays, followed by that of cv. Norin 8 of which effectiveness was more than 40%.

Keywords: allelopathy; donor-receiver bioassay; growth inhibition; Oryza sativa
Subjects: allelopathic effects on soil microbial population and plants; bioassay, donor-receiver, allelopathic potential, root exudate; cultivar differences, allelopathic potential; Lactuca sativa; Lepidium sativum; Medicago sativa; Oryza sativa; rice; root exudates

Published: December 1, 2001  Show citation

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Kato-Noguchi, H., & Ino, T. (2001). Assessment of Allelopathic Potential of Root Exudate of Rice Seedlings. Biologia plantarum, 44(4), 635-638. doi: 10.1023/A:1013731828945
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