Floral biology and cytology of blue palm, Neodypsis decaryl Jumelle (Arecales: Arecaceae)

Date

3-1992

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Teresita L. Rosario

Abstract

Neodipsis decaryi flowers at its seventh to tenth year of growth and development. The flower buds are arranged spirally around the rachilla and occur singly. In pairs in triad clusters. Those that develop singly or in pairs are males, but male and female pairs occur in some cases. The triads are located near the base up to midway through the rachilla. Anthesis of male flowers is maximum from 4:00-6:00 am while anther dehiscence is completed by 6:00 am. Morphological differences between male and female flowers were also established.

Meiosis of N.decaryi occurs at 3:15-4:30 am and is normal although lagging chromosomes were observed in 1% of the cells at anaphase I. These abnormalities did not disturb the normal behavior of the chromosomes during meiosis. the chromosome number is 2n=32. sixteen bicvalents were observed at diakinesis. N. decaryi produces as much as 97.77% fertile pollen.

Language

English

Call Number

Thesis

Document Type

Thesis

This document is currently not available here.

Share

COinS