PJB-2018-143
FLOWER MORPHOLOGY AND ONTOGENY OF CRATAEGUS TANACETIFOLIA (LAM.) PERS. (ROSACEAE)
ASLIHAN CETINBAS-GENC
Abstract
In this study, flower morphology and ontogeny of Turkish endemic Crataegus tanacetifolia (Lam.) Pers. (Rosaceae) were studied using stereo, light and scanning electron microscope. C. tanacetifolia has corymb type of inflorescence which bears 5-10 hermaphrodite flowers. The first sign in appearance of the flowers is the differentiation of apical meristem as a roundish bulge. It transforms into the floral meristem which generate the primordia of sexual organs in advanced stages. 20 stamen primordia differentiate as rounded protrusion from the edges of floral meristem. Subsequently, the stamen primordia start stretching and differantiating into the filaments and anthers, respectively. After a short time of stamen initiation, 5 carpel primordia differentiate from the floral meristem and in progressive stages, the carpel primordia elongate to form an ovary with 5 loculi. During the ovary formation, 5 styles occur on the ovary and then stigmas evolve out of styles tips.
To Cite this article:
Download
