A Study in Cereal Rust; Physiological Races..
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In our eReader you can find the full English version of the book. Read A Study in Cereal Rust; Physiological Races.. Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Study in Cereal Rust; Physiological Races..
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The tube usually follows the epiderm closely ; swellings are often found above RUST-RESISTANT VARIETIES OF WHEAT 43 the wall between two epidermal cells (Plate VII, 3). In these swell- ings, which appear very much like very young appressoria, the pro- toplasm often aggregates more densely than in the other parts of the tube. The germ tube may often follow the epiderm for considerable distances, sometimes for the length of 15 epidermal cells, before a definite appressorium is formed. Nearly alwa...ys when a stoma is reached the tube forms a very definite swelling (Plate VII, 1) which constitutes an appressorium. The protoplasmic contents of practically the entire germ tube are concentrated in this appressorium. It dips down into the stomatal opening and a fine protoplasmic process is sent through to the substomatal space. Here a definite swelling takes place, forming the substomatal vesicle (Plate VII, 4 and 5). Appar- ently, in some cases, the vesicle develops no further. In the great majority of cdses, however, the protoplasm aggregates in it and infection-threads are sent out.
What to read after A Study in Cereal Rust; Physiological Races..?
You can find similar books in the "Read Also" column, or choose other free books by Stakman, Elvin Charles. [from Old Catalog] to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The tube usually follows the epiderm closely ; swellings are often found above RUST-RESISTANT VARIETIES OF WHEAT 43 the wall between two epidermal cells (Plate VII, 3). In these swell- ings, which appear very much like very young appressoria, the pro- toplasm often aggregates more densely than in the other parts of the tube. The germ tube may often follow the epiderm for considerable distances, sometimes for the length of 15 epidermal cells, before a definite appressorium is formed. Nearly alwa...ys when a stoma is reached the tube forms a very definite swelling (Plate VII, 1) which constitutes an appressorium. The protoplasmic contents of practically the entire germ tube are concentrated in this appressorium. It dips down into the stomatal opening and a fine protoplasmic process is sent through to the substomatal space. Here a definite swelling takes place, forming the substomatal vesicle (Plate VII, 4 and 5). Appar- ently, in some cases, the vesicle develops no further. In the great majority of cdses, however, the protoplasm aggregates in it and infection-threads are sent out.
What to read after A Study in Cereal Rust; Physiological Races..?
You can find similar books in the "Read Also" column, or choose other free books by Stakman, Elvin Charles. [from Old Catalog] to read onlineMoreLess
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