caa a22 4500 445301708 CHVBK 20180317142600.0 cr unu---uuuuu 170323e20100801xx s 000 0 eng 10.1007/s13237-010-0008-7 doi (NATIONALLICENCE)springer-10.1007/s13237-010-0008-7 Cytological investigations in poly-gamo-dioecious tree Simarouba glauca DC [Elektronische Daten] [Ravikumar Baratakke, Chandrashekhar Patil] In angiosperms sexual dimorphism is proved to be an evolutionary advancement and plays a major role in crop improvement in general and in tree species in particular. Identification of sex in absence of morphological markers is a difficult task in such plants. Sex determination in all dioecious plants does not follow a common mechanism. In present investigation an attempt is made to understand the mechanism of sex determination in poly-gamo-dioecious tree species Simarouba glauca DC., an important oil yielding and medicinal plant. Scoring of morphological characters in male and female S. glauca reveals that both are morphologically identical with 2n = 30 chromosomes and exhibit symmetric karyotype and with homomorphic median chromosomes with one pair of SAT chromosomes, but female plant possess chromosomes which are longer than male counterpart and the largest chromosome is more than two fold longer than the smallest. Archana Sharma Foundation of Calcutta, 2010 Simarouba glauca nationallicence Dioecious nationallicence Karyotype nationallicence Homomorphic chromosome nationallicence Baratakke Ravikumar Department of Botany, Karnatak Science College, 58003, Dharwad, India aut Patil Chandrashekhar Department of Botany, Karnatak Science College, 58003, Dharwad, India aut The Nucleus Springer-Verlag 53/1-2(2010-08-01), 33-36 0029-568X 53:1-2<33 2010 53 13237 https://doi.org/10.1007/s13237-010-0008-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s13237-010-0008-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Baratakke Ravikumar Department of Botany, Karnatak Science College, 58003, Dharwad, India aut NATIONALLICENCE 700 1- Patil Chandrashekhar Department of Botany, Karnatak Science College, 58003, Dharwad, India aut NATIONALLICENCE 773 0- The Nucleus Springer-Verlag 53/1-2(2010-08-01), 33-36 0029-568X 53:1-2<33 2010 53 13237 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer