Cytology of gatas-gatas, Euphorbia hirta Linn. (Euphorbiales : Euphorbiaceae)

Date

3-1994

Degree

Bachelor of Science in Biology

Major Course

Major in Cell Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Genaleen Q. Diaz

Abstract

The chromosome number of Euphorbia hirta was determined employing the acetocarmine squash technique. The mitotic and meiotic chromosomal behavior of this species were analyzed and correlated with its pollen fertility. Normal chromosome behavior was observed in all stages of mitosis. The chromosome number of Euphorbta hirta was confirmed to be n=9, 2n=18. Relatively low frequency of normal pairing and high frequency of univalent formation was observed at diakinesis. Other stages at meiosis exhibited high frequencies of normal chromosome behavior while laggard formation and non-congression at metaphase I and anaphase I occurred at low frequencies. The normal chromosome behavior at meiosis resulted in the high percentage of pollen fertility (90.3%) observed.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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