Pathological Plant Anatomy
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In our eReader you can find the full English version of the book. Read Pathological Plant Anatomy 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 Pathological Plant Anatomy
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Both authors ■ found produced on the immersed part of the shoots a soft, spongy tissue the development of which Schenck (83) followed more closely. The bark cells on the swollen pieces of the shoots are enlarge abnormally and the products of the cork meristem also have grovm out into long sacs, distended radially, which leave large intercellular spaces open be- tween them, just as in the bark cells;- essentially therefore in the plants named, a similar tissue formation is cause...d by contact with vjater as in our Ribes cuttings in moist air.
Schenck named the porous tissue, furnished Toj the cork mer- istem, aerenohyma:-"the phellogen of the above swamp plants can have two positions structurally, and the one or the other will be developed according to the consistencjr of the medium.
?/hat acts here as cause of the stimulation? It is not very probable that the mere contact of the epidermis with water may be considered as such; it should rather be supposed, that the lack of 03cygen of the inner tissues reguirea the develop- ment of aerenchyma by the cytoplasm, of the phellogen cells." There can be no doubt in the case of the Ribes cuttings which we studied, but'aht lack of air doBS not give rise to the chahge of bark, and cork tissues; indeed the amount of air furnished to the parts of shoots furrowed by the rifts is evidently especially abundant a-nd the formation of the ab- normally large distended cells is lacking in the immersed pieces of twigs which are kept from a supply of air.
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To quickly assess the difficulty of the text, read a short excerpt:
and many others.
Both authors ■ found produced on the immersed part of the shoots a soft, spongy tissue the development of which Schenck (83) followed more closely. The bark cells on the swollen pieces of the shoots are enlarge abnormally and the products of the cork meristem also have grovm out into long sacs, distended radially, which leave large intercellular spaces open be- tween them, just as in the bark cells;- essentially therefore in the plants named, a similar tissue formation is cause...d by contact with vjater as in our Ribes cuttings in moist air.
Schenck named the porous tissue, furnished Toj the cork mer- istem, aerenohyma:-"the phellogen of the above swamp plants can have two positions structurally, and the one or the other will be developed according to the consistencjr of the medium.
?/hat acts here as cause of the stimulation? It is not very probable that the mere contact of the epidermis with water may be considered as such; it should rather be supposed, that the lack of 03cygen of the inner tissues reguirea the develop- ment of aerenchyma by the cytoplasm, of the phellogen cells." There can be no doubt in the case of the Ribes cuttings which we studied, but'aht lack of air doBS not give rise to the chahge of bark, and cork tissues; indeed the amount of air furnished to the parts of shoots furrowed by the rifts is evidently especially abundant a-nd the formation of the ab- normally large distended cells is lacking in the immersed pieces of twigs which are kept from a supply of air.
What to read after Pathological Plant Anatomy?
You can find similar books in the "Read Also" column, or choose other free books by Dorrance, Frances, B. 1877 to read onlineMoreLess
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