Morphological and cytological studies of three sugarcane (Saccharum officinarum L.) hybrids from Canal Point, Florida

Date

3-2004

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Celia B. Dela Viña

Co-adviser

Hazel L. Gaza

Abstract

MACUSI, JOSEPHINE DOMINGO. 2004. Morphological and Cytological Studies of Three Sugarcane (Saccharum officinarum L.) Hybrids from Canal Point Florida. University of the Philippines Los Banos. BS Biology major in genetics. Major Adviser Prof Celia B dela Villa Co-Adviser. Hazel L Gaza ABSTRACT The morphology and cytology of three sugarcane (Saccharum officinarum L ) hybrids from Canal Point. Florida. CP 55-38. CP 72-370 and CP 77-1312 were characterized Morphological data showed that the three hybrids differed in 11 out of 53 characteristics. Notable variations were observed in leaf sheath secondary color (absent it CP 55-38, red-purple in CP 72-370. grey-purple in CP 77-1312), quality and persistence of trichomes (absent in CP 55-38, soft non-deciduous in CP 72-370, hard deciduous in CP 77-1312), stalk waxiness (restricted to the wax band below the leaf scar in CP 55-38, heavy throughout internode in CP 72-370, light throughout internode in CP 77-1312). and internode shape (cylindrical in CP 55-38, bobbin-shaped in CP 72-370, conoidal in CP 77-1312) CP 55-38 was similar to CP 72-370 in 47% of the morphological characteristics examined and 49% to CP 72-370, CP 72-370 was also similar to CP 77-370 ;n 49% of the descriptors traits In terms of the stem epidermal patterns. there were no paired cork and silica cells observed. therefore. all of the three Saccharum grids can be classified under Type V stem epidermis Data showed variation in chromosome configuration at diakinesis and in the chromosome number among the three hybrids and even within the same accession The most frequent counts were 5011 (211=100) for CP 55-38 (38%). 5011 (2n=100) for CP 72-370 (22%) and 5711 (2n=1 14) for CP 77-1312 (24%) Meiosis was generally normal in all hybrids (94% average in CP 55-38, 98% average in CP 72-370. 92% average in CP 77-1312) Only a low percentage of cells showing abnormalities like multiple metaphase plate (4% average) and laggards (3% average) were observed Chromosomal transmission from CP 55-38 to CP 72-370 was deduced to be n + n

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

This document is currently not available here.

Share

COinS