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单词 Puccinia
例句 Puccinia
He traced this step by step in Phytophthora, Cystopus, Puccinia, and other Fungi, and so placed before the world in a clear light the significance of parasitism. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 10 "David, St" to "Demidov" 2012-02-17T03:00:33.923Z
This stage in the life-history of the parasite gives its name to the whole fungus, so that it is now known as Puccinia Pringsheimiana. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z
Just as the uredospores and aecidiospores both show these specialized characters in the case of Puccinia graminis so we find that both the conidia and ascospores of E. graminis show this phenomenon. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z
It greatly resembles that in Puccinia, except that the filament is shorter, and the sporules are spherical and orange-coloured, instead of being kidney-shaped and pale. Fungi: Their Nature and Uses
Disease of Hollyhocks and Malvaceous Plants.—In some parts of England the cultivation of the Hollyhock had at one time quite ceased owing to the attacks of a microscopic fungus named Puccinia malvacearum. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition
The first case is not common, the usual number of generations being two only; but a typical example of the occurrence of three generations is in such fungi as Puccinia Graminis. Scientific American Supplement, No. 531, March 6, 1886
It has, however, to be remarked that De Bary was not equally successful in producing the Puccinia from the spores of the Æcidium. Fungi: Their Nature and Uses
A similar specialization has been observed by Marshall Ward in the Puccinia parasitic on species of Bromus, and by Neger, Marchal and especially Salmon in the Erysiphaceae. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z
This study of germination leads also to a very definite conclusion with regard to the genus Uromyces—that it is much more closely related to Puccinia and its immediate allies than to other unicellular Uredines. Fungi: Their Nature and Uses
In spring and early summer Violets are often badly affected by a fungus named Æcidium violæ, which is apparently identical, however, with Puccinia violæ. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition
Dr. Salisbury was of opinion that camp measles was produced by Puccinia graminis, the pseudospores of which germinated in the damp straw, disseminated the resultant secondary bodies in the air, and caused the disease. Fungi: Their Nature and Uses
Puccinia prunorum affects the leaves of almost all the varieties of plum. Fungi: Their Nature and Uses
Eriksson found, for example, that the well-known species Puccinia graminis could be split up into a number of forms which though morphologically similar were physiologically distinct. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z
This mode of germination, it will be seen, resembles greatly that which takes place in Puccinia. Fungi: Their Nature and Uses
The seedlings also possess a constitution capable of withstanding the deadly Puccinia malvacearum, and there is no longer a danger that this stately plant will become merely one of the pleasures of memory. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition
Orchids are liable to spot from fungi on the leaves, and recently the whole of the choicest hollyhocks have been threatened with destruction by a merciless foe in Puccinia malvacearum. Fungi: Their Nature and Uses
In Puccinia the number of species is by far the most numerous; in this genus the spores are uniseptate, and, as in all the Pucciniæi, the peduncles are permanent. Fungi: Their Nature and Uses
In some species of Puccinia the sori are so compact that they remain attached to the leaves long after they are dead and fallen. Fungi: Their Nature and Uses
In view of the popular belief, he determined to sow the spores of Puccinia graminis on the leaves of the berberry. Fungi: Their Nature and Uses
The fungus has a Puccinia stage of growth very similar to that of the Hollyhock fungus, Puccinia malvacearum. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition
Specimens of Puccinia mounted in this way when fresh gathered, and before any shrivelling had taken place, are as plump and natural in our cabinet as they were when collected six or seven years ago. Fungi: Their Nature and Uses
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