Natura Montenegrina No 5, 2006

UDK 581.54:582.745.51(497.16)(045)=111

 

FLOWERING PHENOLOGY AND SEX EXPRESSION IN ACER CAMPESTRE L. FROM MONTENEGRO

   

Rajko  T R I P I Ć 1)

   

Synopsis

 

The paper contains the results of research of flowering phenology and sex expression of flowers, inflorescences and individual trees of Acer campestre. The flowers were morphologicaly false bisexualy and functionaly unisexualy (male and female). Male flowers had small rudimentary pistil and well-developed stamens (with long filaments and yellow functional anthers), and female flowers had well-developed pistil and imature stamens (with green, hard and non-functional anthers on very short filaments). Protandry is established on 9 trees and protogyny is established at only one tree. The flowering types of inflorescence that were found: B (♀- ♂), C (♂-♀-♂), D (♂-♀), E (♂I), F (♂II), G (♂I-♂II), H (♀-♂-♀), J (♂-♀-♂-♀), L (♂-♀-♂-♀-♂). The most frequent is C type and rarest is H type.

Key words: Flowering phenology, sex expression, Acer campestre

 

 

Sinopsis

 

FENOLOGIJA CVJETANJA I POLNA EKSPRESIJA U ACER CAMPESTRE L.

 IZ CRNE GORE

 

U radu su dati rezultati istraživanja fenologije cvjetanja i polne ekspresije cvjetova, cvati i   individualnih stabala Acer campestre. Cvjetovi su bili morfološki lažno dvopolni a funkcionalno jednopolni (muški i ženski). Muški cvjetovi su imali mali, rudimentarni tučak i dobro razvijene prašnike (sa dugim filamentima i žutim, funkcionalnim anterama), a ženski cvjetovi su imali dobro razvijen tučak i nezrele prašnike (sa zelenim, tvrdim i nefunkcionalnim anterama na vrlo kratkim filamentima). Protandrija je utvrđena kod 9 stabala a protoginija kod jednog stabla. Utvrđeni su sljedeći tipovi cvjetajućih cvati: B (♀- ♂), C (♂-♀-♂), D (♂-♀), E (♂I), F (♂II), G (♂I-♂II), H (♀-♂-♀), J (♂-♀-♂-♀), L (♂-♀-♂-♀-♂). Najčešći je C tip a najrjeđi H tip cvjetajućih cvati.

Ključne riječi: Fenologija cvjetanja, polna ekspresija, Acer campestre

 

1)  Republic Institute for the Protection of Nature of Montenegro, Podgorica,

     Trg vojvode Bećir bega Osmanagića 7, Podgorica