Morphological and cytological characterization of three Saccharum hybrids from Canal Point, Florida, USA.

Date

4-2005

Degree

Bachelor of Science in Biology

Major Course

Major in Cell Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Merlyn S. Mendioro

Abstract

Morphological and cytological characteristics of three Saccharum hybrids namely CP 57-614, CP 72-2086 and CP 78-2114 were studied. About 42 percent in all the morphological characteristics were the same among the hybrids. They all have spreading tillering habit, intermediate tillering density heavy tops and open leaf carriage. They differed in some characteristics like plant habit, trashiness, leaf blade and leaf blade midrib color, plant height and stalk length. Chromosomal behavior at meiosis 1 was also observed. The most frequent chromosome numbers observed in the hybrids were 2n -104 (CP 57-614), 2n-94(CP 72-2086) and 2n- 96 (CP 78-21 14). Abnormalities in meiosis I were predominant in CP 57-614. These include laggards at metaphase L anaphase I and telophase 1 with 28, 34 and 22%, respectively. Few abnormal cells were observed in CP 72-2086. Laggards at metaphase!, anaphase I and telophase I ranged from 6-10%. In CP 78-2114, abnormalities noted were laggards at metaphase I and anaphase 1 (8-10%) and bridge at anaphase 1 and telophase 1 (4-8%).

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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