Rania Aly Hassan Abdelhafeez Shalaby

Flowering Strategies in Gynodioecious Species with Sex Expression Plasticity : Ochradenus baccatus Delile as a case study / استراتيجيات الازهار فى الانواع النباتية ثنائية الجنس للمتاع والتى تتميز بمرونة التحول بين الجنسين : القرضى حالة دراسية Rania Aly Hassan Abdelhafeez Shalaby ; Supervised Wafaa Mahrous Amer , Azza Mohamed Hosny Elhadidy - Cairo : Rania Aly Hassan Abdelhafeez Shalaby , 2015 - 139 P. : facsimiles ; 25cm

Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Botany and Microbiology

In Egypt, about 11 species in 6 families are gynodioecious out of them Ochradenus baccatus Delile (F: Resedaceae), was subjected to this work. Results revealed that this species is dimorphic, gynodioecious (females & inconstant males). It was traced as four transitional forms in inconstant males and three forms in females. The inconstant male populations dominated over the female ones and possessed a variability in seed production which was lower than that of female forms. Pollen grains was 3-colporate, with reticulate exine. Application of RAPD technique revealed the detection of certain sexlinked bands, accordingly sex morphs are genetically linked



Gynodioecy Inconstant male Ochradenus baccatus