Factors Influencing Infection of Hordeum sativum by Ustilago hordei

Faris, James A.

doi:10.2307/2435539

American Journal of Botany

1924

DOI: 10.2307/2435539

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Factors Influencing Infection of Hordeum sativum by Ustilago hordei

James A. Faris¹

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1924

2009

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Cited by 6 publications

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The discovery of physiologic races in covered smut of barley (2,4) and in the loose and covered smuts of oats (6,8) has greatly stimulated the study of host specialization in the other cereal smuts. From this standpoint, these parasites have previously been a neglected group, although physiologic specialization has long been known to be of wide occurrence among the parasitic fungi (5).

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Physiologic Races of Bunt of Wheat

Reed

1928

American Journal of Botany

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Physiologic Races of Bunt of Wheat

Reed

1928

American Journal of Botany

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Influence of Environal Factors on the Infection of Sorghums and Oats by Smuts Ii. Experiments With Covered Smut of Oats and General Considerations

Reed¹,

Faris²

1924

American J of Botany

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In a previous publication the writers (38) have described their experiments to determine the influence of environal factors on the infection of sorghums by covered and loose kernel smuts. The present paper takes up a similar series of experiments on the infection of oats by Ustilago levis (K. & S.) Magn. The methods employed were essentially the same as described for the previous studies.In 1922 a preliminary test was made to determine the influence of moisture on the infection of Avena nuda L. var. inermis (S. N. 30) by both Ustilago avenae (Pers.) lens. and U. levis (K. & S.) Magn. The experiment was planned primarily to determine whether sand would be a suitable substratum for carrying out an extended series of experiments on the influence of temperature, moisture, and other factors on infection. The sand used passed through a zo-mesh sieve but not through a 4o-mesh sieve, and had a reaction of pH 7.2. The seeds were germinated in the laboratory at a temperature of 19°-22°C. Four soil moistures were used-20, 40, 60, and 80 percent. The results are given in table I. TABLE I. Influence of Moisture on Infection of Avena nuda L. var. inermis (S. N.30) by Ustilago avenae and U. levis, I922; Laboratory Temperature, Sand, pH 7.2

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Testing for resistance to smut diseases of barley, oats and wheat in western Canada

Menzies

Turkington

Knox

2009

Canadian Journal of Plant Pathology

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Factors Influencing Infection of Hordeum sativum by Ustilago hordei

Cited by 6 publications

References 0 publications

Physiologic Races of Bunt of Wheat

Physiologic Races of Bunt of Wheat

Influence of Environal Factors on the Infection of Sorghums and Oats by Smuts Ii. Experiments With Covered Smut of Oats and General Considerations

Testing for resistance to smut diseases of barley, oats and wheat in western Canada

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