FLORAL BIOLOGY OF FOUR SPECIES OF ROSACEAE
Mots-clés :
Rosaceae, flowers, pollen grains, diversity, collecting, extractionRésumé
Rosaceae that constitute our subject of study have a fairly consistent floral organization and regular flower (pentamers): 5 sepals, five petals, stamens numerous, one or more carpels.
In our work we are interested to four cultivated species, dominant in our study area are: Amygdalus communis Batch., Cydonia oblonga Mill., Eriobotrya japonica Thunb., Malus domestica Borkh.
After collecting flowers and extraction of pollen grains, observations with binocular and light microscope there emerges a diversity materialized ia in: Flower color ; The presence or absence of duvet or bristles around the reproductive organs protecting them low temperatures; this allows for example medlar and almond tree reproduce during cold periods (December-February).
Références
[ 1 ]- Meyer S., Reeb C. Bosdeveix R., Botanique, Plant biology and physiology. Maloine. 2, Paris. (2008). 490 p.
[ 2 ]- Robert D., Dumas C., Biologie, La reproduction. Volume 3. Doin, Paris. (1998). 384 p.
[ 3 ]- Marouf A., Reynaud J., Botany from A to Z. Dunod, Paris. (2007). 342 p.
[ 4 ]- Burnire G.S., Forrester S., Harmoney M., Lavarack H P, Botanica. Encyclopedia of Botany and horticulture. More 1000 plantes worldwide. Place des Victoires. (2005). 1020 p.
[ 5 ]- Guignard J. L., Dupont F., Botanique. Molecular systematic. Masson, 14, Paris. (2007). 285 p.
[ 6 ]- Guignard J L., Dupont F., Botanique Families. Elsevier Masson. 15, Paris.(2012). 300 p.
[ 7 ]- Spichiger R E., Savolainen V., Figeat Jeanmonod M. D., Systematic Botany of flowers plantes. A new phylogenetic approach régionstempéréeset tropicales of angiosperms. Polytechnic and university Press romandes. (2009). 413 p.
[ 8 ]- Nuce L., Wuidart W., Sangare A., The artificial fertilization of cocotier. Oléagineux, (1980) pp. 319-326.
[ 9 ]- Verdel J.L., Pannetier C., Optimization of in vitro germination conditions of pollen coconut (Cocos nuciferaL.) For the development of a viability test. Oilseeds. (1990).pp. 175-179.
