| 单词 | Peronospora |
| 例句 | L, M, N, Fertilization of the oogonium and development of the oospore in Peronospora. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The germs of Peronospora enter the foster plant if the spores are sown upon a part suitable for the development of the parasite. Fungi: Their Nature and Uses Potato Disease.—The fungus which causes the Potato Disease, or 'Blight' as it is sometimes called, was formerly known as Peronospora infestans; now it is recognised by scientific authorities as Phytophthora infestans. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition "Come home at once," he says; "the Peronospora Schleideniana has got at the onions." Punch, or the London Charivari, Volume 99, November 8, 1890 It is parasitical, the parasite being a fungus, the Peronospora infestans, which grows at the expense of the leaves, stems, and tubers of the plant until it destroys their vitality. Scientific American Supplement, No. 595, May 28, 1887 Under certain circumstances, a process of conjugation takes place in the Peronospora. Discourses Biological and Geological Essays In the species of Peronospora that inhabit perennial plants, or annual plants that last through the winter, the mycelium hidden in the tissues of the foster-plant lasts with it. Fungi: Their Nature and Uses Lettuce Mildew.—This fungus is named Bremia lactucæ, formerly known as Peronospora ganglioniformis, and is sometimes of the most destructive character. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition Peronospora Schleideniana, D. By., is in some years very common and destructive to young onions, and field crops of lucerne are very liable to attack from Peronospora trifoliorum, D. By. Fungi: Their Nature and Uses Just as plants of higher organization choose their soils, some growing in the water and some on land, so the Peronospora infestans chooses its host plant; and its soil is this species, the Solatium tuberosum. Scientific American Supplement, No. 595, May 28, 1887 Moreover, as in the Peronospora, conjugation may take place and result in an oospore; the contents of which divide and are set free as monadiform germs. Discourses Biological and Geological Essays The Peronospora of the potato is thus perennial by means of its mycelium contained in the browned tissue of the diseased tubers. Fungi: Their Nature and Uses Onion Mildew is caused by the fungus Peronospora Schleideni, which is occasionally disastrous in its effects, more especially in cold, wet seasons. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition One of the most important and highly developed genera is Peronospora, the members of which are parasitic upon and destructive of living vegetables. Fungi: Their Nature and Uses This plant, the Peronospora infestans, will only grow on the Solanum tuberosum, that is, the cultivated potato.... Scientific American Supplement, No. 595, May 28, 1887 For example, there is a Fungus, an obscure and almost microscopic mould, termed Peronospora infestans. Discourses Biological and Geological Essays All the alterations seen on examining spontaneous individuals are found when the Peronospora is sown in a nourishing plant. Fungi: Their Nature and Uses This fungus has been described as a true Peronospora. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition In Peronospora, it has been demonstrated that certain species produce minute zoospores from the so-called spores. Fungi: Their Nature and Uses In the middle of August, 1876," says Mr. Murray, "I instituted the following experiments, with the object of determining the mode of diffusion of the conidia of Peronospora infestans. Scientific American Supplement, No. 595, May 28, 1887 At A is illustrated one of the stems of the Poppy Peronospora emerging from the leaf, enlarged seventy-five diameters. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition Peronospora gangliformis, B., attacks lettuces, and is but too common and injurious. Fungi: Their Nature and Uses Poppies are often attacked by a fungus pest closely allied to the fungus of the Potato disease, and named Peronospora arborescens. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition |
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