Effects of Fungi on Barley Seed Germination

SUMMARY: Barley seeds placed in contact with straw buried in soil imbibed water more slowly and had a greater fungal biomass under the husk at germination than did seeds which had been in contact with soil only. The growth of fungi under the husk increased during imbibition and continued when the seed was fully imbibed; such growth resulted in poor seed germination. A common soil saprophyte. Gliocladium roseum. inoculated on to the outer surfaces of the seed husk, suppressed germination by competing with the embryo for available oxygen. The prevention of seed germination by some micro-organisms seems to be related to the microbial affinity for oxygen.

[1]  D. G. Christian,et al.  The effect of straw on the establishment and growth of winter cereals , 1981 .

[2]  J. Lynch,et al.  Effects of Azotobacter chroococcum on Barley Seed Germination and Seedling Development , 1979 .

[3]  J. Lynch,et al.  Interaction Between a Soil Fungus and Barley Seed , 1977 .

[4]  J. O. Mundt,et al.  Bacteria within ovules and seeds , 1976, Applied and environmental microbiology.

[5]  E. Simon.  PHOSPHOLIPIDS AND PLANT MEMBRANE PERMEABILITY , 1974 .

[6]  B. Flannigan.  Distribution of seed-borne micro-organisms in naked barley and wheat before harvest , 1974 .

[7]  J. Lynch,et al.  Formation of Ethylene by a Soil Fungus , 1974 .

[8]  D. Harrison.  Physiological effects of dissolved oxygen tension and redox potential on growing populations of micro-organisms , 1972 .

[9]  Clyde M. Christensen,et al.  Microflora and Seed Deterioration , 1972 .

[10]  D. Warnock.  Assay of Fungal Mycelium in Grains of Barley, including the Use of the Fluorescent Antibody Technique for Individual Fungal Species , 1971 .

[11]  D. Warnock,et al.  Location and extent of fungal mycelium in grains of barley , 1971 .

[12]  C. Chesters,et al.  Methods of isolating the microflora of moulding, high -moisture barley in partially sealed silos , 1970 .

[13]  E. H. Roberts,et al.  WATER-SENSITIVITY IN BARLEY SEEDS II. ASSOCIATION WITH MICRO-ORGANISM ACTIVITY , 1969 .

[14]  E. Roberts.  Seed dormancy and oxidation processes. , 1969, Symposia of the Society for Experimental Biology.

[15]  D. Griffin.  Fungi attacking seeds in dry seed-beds , 1966 .

[16]  P. W. Wilson,et al.  ADAPTATION OF AZOTOBACTER CELLS TO TRICARBOXYLIC ACID SUBSTRATES , 1954, Journal of bacteriology.

[17]  M. B. Hyde.  The subepidermal fungi of cereal grains. I. A survey of the world distribution of fungal mycelium in Wheat. , 1950 .

[18]  M. H. Quenouille,et al.  A Technique for the Quantitative Estimation of Soil Micro-organisms: With a Statistical Note by , 1948 .