Formation of adventitious buds in needle primordia isolated from embryonic shoots of adult picea abies

1987 ◽  
Vol 29 (6) ◽  
pp. 437-444 ◽  
Author(s):  
P. Krogstrup
Keyword(s):  
Picea Abies ◽  
Adventitious Buds ◽  
Needle Primordia

Differentiation of bud meristems and cataphylls during adventitious bud formation on embryos of Picea abies

1989 ◽  
Vol 67 (2) ◽  
pp. 422-428 ◽  
Author(s):  
Sara Von Arnold ◽  
Chris Hawes
Keyword(s):  
Picea Abies ◽  
Adventitious Bud ◽  
Bud Formation ◽  
Meristematic Cells ◽  
Cell Divisions ◽  
Adventitious Bud Formation ◽  
Cytokinin Treatment ◽  
Meristematic Activity ◽  
Xylem Elements ◽  
Needle Primordia

Embryos of Picea abies were pulse-treated with benzyladenine for 24 h and then cultured on medium lacking growth regulators. Meristemoids developed on all embryos during the 2nd week after the cytokinin treatment. Cells within the meristemoids divided randomly. As the meristemoids developed, further cell divisions became more organized so that separate regions of meristematic activity could be distinguished within each meristemoid. These meristematic regions developed into individual nodules and each nodule developed further into either a bud meristem or a cataphyll. Cataphylls were composed of unorganized, vacuolated, thick-walled cells whereas bud meristems were composed of organized meristematic cells. Later, xylem elements developed at the base, and needle primordia at the top of bud meristems. The bud apex had cytohistological zonation typical of conifers. The appearance of the developing adventitious buds depended on the number of cataphylls formed per bud as well as on the marginal expansion of the cataphylls.

Histogenèse et organogenèse de Picea pungens cultivé in vitro

1985 ◽  
Vol 63 (7) ◽  
pp. 1313-1318
Author(s):  
Louise Chrétien ◽  
Joachim Vieth
Keyword(s):  
Adventitious Buds ◽  
Superficial Zone ◽  
Meristematic Tissue ◽  
Picea Pungens ◽  
Vegetative Buds ◽  
Needle Primordia

The histological events occurring both prior to and during the neoformation of adventitious buds on portions of vegetative buds of Picea pungens Engelmann are analysed. The formation of a superficial zone of meristematic tissue in needle primordia and needle primordium callus is followed by the differentiation of meristemoids and buds.

Effects of Partial Cutting and Scarification on Planted Picea abies at Mid-elevation Sites in South-east Norway

2003 ◽  
Vol 18 (3) ◽  
pp. 237-246 ◽  
Author(s):  
Aksel Granhus ◽  
Finn H. Brække ◽  
Kjersti Holt Hanssen ◽  
Oddvar Haveraaen
Keyword(s):  
Picea Abies ◽  
Partial Cutting

Ethylene effects on cambial activity and cell wall formation in hypocotyls of Picea abies seedlings

1991 ◽  
Vol 82 (2) ◽  
pp. 219-224 ◽  
Author(s):  
Barbro S. M. Ingemarsson ◽  
Leif Eklund ◽  
Lennart Eliasson
Keyword(s):  
Cell Wall ◽  
Picea Abies ◽  
Cambial Activity ◽  
Cell Wall Formation ◽  
Wall Formation
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