Results 271 to 280 of about 75,536 (299)
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American Journal of Botany, 1973
The phloem of most fossil plants, including that of Sphenophyllum, is very poorly known. Sphenophyllum was a relatively small type of fossil arthrophyte with jointed stems bearing whorls of leaves ranging in form from wedge or fanâshaped to bifid, to linear.
D. A. Eggert, D. D. Gaunt
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The phloem of most fossil plants, including that of Sphenophyllum, is very poorly known. Sphenophyllum was a relatively small type of fossil arthrophyte with jointed stems bearing whorls of leaves ranging in form from wedge or fanâshaped to bifid, to linear.
D. A. Eggert, D. D. Gaunt
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Studying Phloem Loading with EDTA-Facilitated Phloem Exudate Collection and Analysis
2019Sugars that are produced by photosynthesis in the leaves are transported in the phloem to heterotrophic sink tissues like roots, fruit, or flowers. Since sugars inside the highly specialized cells of the phloem move by bulk flow, it is the loading and unloading of sugars that determines the rates of allocation between organs.
Qiyu, Xu +2 more
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1973
Im Hinblick auf die umfassende und ausgezeichnete Ubersicht bei ESAU (2) ist die neuere Literatur (etwa ab 1968) verstarkt berucksichtigt. Untersuchungen an KMnO4-fixiertem Material wurden wegen der schlechten Erhaltung des Siebelement-Protoplasten (KOLLMANN u. SCHUMACHER, 2; JOHNSON, 1) nur in Ausnahmefallen herangezogen.
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Im Hinblick auf die umfassende und ausgezeichnete Ubersicht bei ESAU (2) ist die neuere Literatur (etwa ab 1968) verstarkt berucksichtigt. Untersuchungen an KMnO4-fixiertem Material wurden wegen der schlechten Erhaltung des Siebelement-Protoplasten (KOLLMANN u. SCHUMACHER, 2; JOHNSON, 1) nur in Ausnahmefallen herangezogen.
openaire +1 more source