EFFECTS OF LIGHT INTENSITY ON THE FORMATION OF VESICULAR-ARBUSCULAR ENDOMYCORRHIZAS ON ALLIUM CEPA BY GIGASPORA CALOSPORA

SUMMARY Four different light intensities exerted distinctly different effects on the formation, reproduction and influence of vesicular-arbuscular mycorrhiza on onion plants. Over a growth period of 100 days, the rate of infection under low light intensities (5 and 10 klux) was more rapid and the percentage of infection higher than on mycorrhizal plants cultivated under a light of 15 and 20 klux. The production of spores increased with light intensity. A plant growth enhancement occurred at all light levels but was most pronounced under a 10 klux light regime.

[1]  N. C. Schenck,et al.  Temperature and light effect on contamination and spore germination of vesicular-arbuscular mycorrhizal fungi. , 1975, Mycologia.

[2]  J. Fortin,et al.  flotation-bubbling system for collecting Endogonaceae spores from sieved soil , 1975 .

[3]  J. Trappe,et al.  The Endogonaceae in the Pacific Northwest , 1975 .

[4]  N. C. Schenck,et al.  Temperature response of Endogone mycorrhiza on soybean roots. , 1974, Mycologia.

[5]  D. S. Hayman.  Plant growth responses to vesicular-arbuscular mycorrhiza. VI. Effect of light and temperature , 1974 .

[6]  J. Rich.  Association of Early-Season Vesicular-Arbuscular Mycorrhizae with Increased Growth and Development of Cotton , 1974 .

[7]  B. Mosse,et al.  Advances in the Study of Vesicular-Arbuscular Mycorrhiza , 1973 .

[8]  L. Orci,et al.  Role of Microtubules in Lipoprotein Secretion by the Liver , 1973, Nature.

[9]  J. Trappe,et al.  Translocation of C from Festuca plants to their endomycorrhizal fungi. , 1973, Nature: New biology.

[10]  J. Sutton.  Development of vesicular-arbuscular mycorrhizae in crop plants , 1973 .

[11]  B. Mosse.  Effects of Different Endogone Strains on the Growth of Paspalum notatum , 1972, Nature.

[12]  B. Mosse.  The influence of soil type and Endogone strain on the growth of mycorrhizal plants in phosphate-deficient soils , 1972 .

[13]  B. Mosse,et al.  The role of vesicular-arbuscular mycorrhiza in the removal of phosphorus from soil by plant roots , 1972 .

[14]  G. Baylis.  EXPERIMENTS ON THE ECOLOGICAL SIGNIFICANCE OF PHYCOMYCETOUS MYCORRHIZAS , 1967 .

[15]  E. Hewitt.  Sand and Water Culture Methods Used in the Study of Plant Nutrition , 1966 .

[16]  B. Mosse.  The regular germination of resting spores and some observations on the growth requirements of an Endogone sp. causing vesicular-arbuscular mycorrhiza , 1959 .

[17]  B. Boullard.  Relations entre la photopériode et l'abondance des mycorhizes chez l'Aster Tripolium L. (Composées) , 1959 .

[18]  J. Gerdemann.  Relation of a Large Soil-Borne Spore to Phycomycetous Mycorrhizal Infections , 1955 .