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Axillary bud viability and dry matter production of Poa ligularis in Patagonian grasslands: (with 1 table & 4 figures) Phyton
Souto,CP; Becker,GF; Siffredi,GL; Busso,CA; Sternberg,M.
Poa ligularis Nees is one of the dominant perennial grass species in Patagonian grasslands. This is the first field study which investigated the effects of defoliation frequency on its number of viable axillary buds, and subsequent dry matter production during one growing season. Experiments were arranged in a randomized complete block design. Treatments included one defoliation height (10 cm), from one to five times a year, and undefoliated controls. Bud respiratory activity was examined usingthe tetrazolium test and the vital stain Evan's blue. At the end of the growing season, plants that have been defoliated more than three times showed significatively (p<0.05) lower number of respiratory active buds than unclipped controls. A high defoliation...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Defoliation; Poa ligularis; Axillary buds; Semiarid Argentina; Dry matter production; Patagonia.
Ano: 2004 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100004
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Micropropagation of Salvia guaranitica Benth. through axillary shoot proliferation BABT
Echeverrigaray,Sergio; Carrer,Rosane Postingher; Andrade,Luciana Bavaresco.
Nodal segments from greenhouse grown adult plants of Salvia guaranitica were used to evaluate the effect of culture media and growth regulators on the micropropagation and growth. The highest multiplication rate was obtained on Murashige and Skoog (MS) medium supplemented with 2.22 µM of 6-benzylaminopurine (BAP). The best condition for rooting was MS medium with 2.85 µM indole-3-acetic acid (IAA). Rooted plants were successfully acclimatized and exhibited a normal development until maturity. Using the described protocol, approximately 35 plants per explant were obtained after three months.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth regulators; Shoot culture; Axillary buds.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400018
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