Allelopathy, 2nd Edition by Elroy L. Rice (Auth.)

By Elroy L. Rice (Auth.)

An intensive revision and replace of the 1st variation, this moment variation is designed to create an knowledge of the quickly constructing box of allelopathy. the writer appraises current wisdom in convinced serious parts, similar to roles of allelopathy within the prevention of seed decay and within the nitrogen cycle, the chemical nature of allelopathic compounds, elements affecting concentrations of allelochemics in vegetation, flow of allelochemics from crops and absorption and translocation by way of different vegetation, mechanisms of motion of allelopathic brokers, and elements opting for effectiveness of allelopathic compounds after egression from generating organisms. parts during which extra easy and utilized learn is required are emphasised. A dialogue of terminology and early heritage of allelopathy is through a dialogue of the $64000 roles of allelopathy in forestry, agriculture, plant pathology, and average ecosystems. A separate directory of the phyla of vegetation confirmed to have allelopathic species is usually included.
Allelopathy, moment Edition, is a complete evaluate of the literature on allelopathy, integrating details on allelopathy with vital info on ecological and agronomic difficulties, bringing up greater than one thousand references. between those that will locate this to be a priceless resource of knowledge are ecologists, horticulturists, botanists, plant pathologists, phytochemists, agricultural scientists, and plant breeders

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Ellis and McCalla found that a single 100 ppm application of patulin to soil in which Lee spring wheat (Triticum aestivum) was planted and allowed to grow to maturity, reduced internodal elongation, floret number, seed weight, and seed number. Yields were reduced according to the proximity of application prior to heading. The authors concluded that a single exposure of growing wheat plants to patulin can produce yield reductions similar to those which occur in stubble-mulch farming. Guenzi and McCalla (1966a) identified and quantified five phenolic acids in mature plant residues of oats, wheat, sorghum, and corn.

They also identified benzyl isothiocyanate in leaves of C. sativa, and bacteria similar to those identified in the phyllosphere of C. , 1972). Pandya (1975, 1976) demonstrated that aqueous extracts of fresh leaves, stems, and roots of Celosia argentea inhibited shoot and root growth of bajra (Pennisetum americanum). Root and leaf e x t r a s were more inhibitory than stem extracts. In 1977, he reported that root exudates of C. argentea were very inhibitory to radicle growth of bajra seedlings until the C.

In a group of 91 isolates, 14 reduced germination to 50% or less, whereas distilled water controls usually had better than 90 to 95% germination. A fungus, which produced a particularly potent toxin against growth of corn plants, was identified as Penicillium urticae. Norstadt and McCalla (1963) idenĀ­ tified the toxin as patulin and compared its inhibitory effect on Cheyenne wheat with 2,4-dichlorophenoxyacetic acid (2,4-D), coumarin, and indole-3-acetic acid (I A A). Germination (as percentage of the control) that occurred in a 50 ppm solution was as follows: 2,4-D, 40%; coumarin, 80; IAA, 85%; and patulin, 85%.

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