geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Allelopathic potentials of a wild rice oryza perennis


, : Allelopathic potentials of a wild rice oryza perennis. Taiwania 36(3): 201-210

To learn about genotypic variations in allelopathic potential 24 strains of a wild rice, Oryza perennis Moench, collected from tropical Asian and American countries, and two rice cultivars (O. sativa L.), were planted at Nankang, and water extracts from their leaves and stems taken at the booting stage were used for bioassay with Chinese cabbage and rice seeds. The extracts were also used for chromatographic analysis to determine the contents of nine phenolic acids. The strains tested markedly differed in root-growth suppression rates in bioassay and contents of phenolic acids, but the two kinds of measurements were largely uncorrelated. The root-growth suppression rate in Chinese cabbage was considered as representing the allelopathic potential better than that in rice. Stepwise regression analysis showed that a combination of several phenolic acids and their interactions could account for the root-growth suppression rate in Chinese cabbage. The result of bioassay clearly indicates the main direction of differentiation in O. perennis strains.

US$29.90


Other references

Tuomisto, L.; Tuomisto, J., 1982: Diurnal variations in brain and pituitary histamine and histamine-N-methyltransferase in the rat and guinea pig. The circadian variation of histamine concentrations and histamine-N-methyltransferase (E.C. 2.1.1.8., HNMT) activities were measured in different parts of rat and guinea pig brain and pituitary glands after an adaptation to a daily 12-hour light a...

Middleton, J.S.; Vaks, J.E.; Kessner, A.; Murata, G.T., 1994: Nested ANOVA computer models of triglyceride value assignment for Beckman Synchron CX systems. Clinical Chemistry 40(6): 1099

Stubbs, K.A.; Zhang, N.; Vocadlo, D.J., 2006: A divergent synthesis of 2-acyl derivatives of PUGNAc yields selective inhibitors of O-GlcNAcase. A divergent route facilitating the rapid synthesis of a series of O-(2-acetamido-2-deoxy-D-glucopyranosylidene)amino N-phenylcarbamate (PUGNAc)-based inhibitors, bearing different N-acyl groups has been developed. All compounds of this series are...

Eliazar, I., 2012: Langevin dynamics, entropic crowding, and stochastic cloaking. We consider a pack of independent probes--within a spatially inhomogeneous thermal bath consisting of a vast number of randomly moving particles--which are subjected to an external force. The stochastic dynamics of the probes are governed by Lange...

Rauh-Hain, J.A.; Melamed, A.; Buskwofie, A.; Schorge, J.O., 2015: Adnexal mass in the postmenopausal patient. The adnexal mass in a postmenopausal patient poses an important diagnostic and management dilemma for primary care providers and gynecologists. Postmenopausal women are at a significantly increased risk of gynecologic malignancy; yet even in this...

Krnjaic, D.; Krnjaic, S.; Nikosavic, Z.; Popovic, M.; Marinkovic, N., 1975: Susceptibility of some sorts and hybrids of tomatoes to the root knot nematodes meloidogyne incognita. From 42 sorts of hybrids of tomato, low susceptibility to M. incognita was observed on 'Pinta', on whose root system there were no galls, and then 'Azes', 'Moira', 'B-67', 'R-12' and 'R-52&apo...

Greene, R.L., 1991: The Ranschburg effect: the role of guessing strategies. The Ranschburg effect refers to the finding of impaired serial recall of items repeated on a list. One account attributes this effect to the use of a strategy where subjects avoid using as guesses stimuli that they had recalled elsewhere on the li...

Chani, J.M.; Bucher, E.H.; Brandan, Z.; Echevarria, A.L.; Lucero, M.M.; Marigliano, N.L., 1998: The response of the micromammals to their habitat in the experimental field Los Colorados (Province of Salta, Argentina). Gran Chaco is an extensive Neotropical region being its principal characteristic the large variety of habitats. The purpose of this paper is to present the micromammals in their environmental mosaic formed by the grown up woods, pasture grounds, s...

Suryanarayana, Y.; Rao, P.S.; Reddy, N.S.R.; Murthy, K.R.K.; Murthy, P.S.N.; Rao, I.N.; Rao, V.R., 1993: High-yielding, brown planthopper -resistant varieties developed at Maruteru, Andhra Pradesh , India. International Rice Research Notes 18(3): 15-16

Siemers C.T. (chairperson), 1980: SEPM Research Group state-of-the-art summaries. Journal of Sedimentary Petrology 50(1): 305-314