Secondary vascular bundles

The structure and development of successive cambia and its products were studied in the stems of the halophyte Sesuvium verrucosum Raf. The young stem has several collateral vascular bundles arranged in a circle and separated by interfascicular zones. The secondary thickening begins with the differentiation of fascicular and interfascicular cambia which give rise to secondary xylem, phloem and lignified cells.

6p schindler 30-12-2021 9 0   Download

The vascular supply of the proximal, middle, and distal parts of the petiole were studied in 11 caesalpinioid species with the aim of documenting any changes in vascular anatomy that occurred within and between the petioles. The characters that proved to be taxonomically useful include vascular trace shape, pericyclic fibre forms, number of abaxial and adaxial vascular bundles, number and relative position of secondary vascular bundles, accessory vascular bundle status.

14p vibasque27 29-03-2019 17 0   Download