Morphological and cytological studies of three hybrids of sugarcane (Saccharum officinarum L.) from PHILSURIN experiment station, Victorias City, Negros Occidental, Philippines

Date

10-2006

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Celia B. Dela Viña

Abstract

Morphological and cytological characters of three hybrids of sugarcane (.S'accharzim officinarum L.) from the PHILSURIN Experiment Station in Victorias City, Negros Occidental, Philippines, namely VMC 77-79, VMC 82-1174, and VMC 86-479 were observed and analyzed. Data on morphological characters were provided by NPGRL-IPB. Similarities in 21 out of 68 characters were observed among the three hybrids. VMC 82-1174 and VMC 86-479 had the highest percentage of similarity with 42 out of 68 characters that were similar (61.76%). This was followed by VMC 86-479 and VMC 77-79, which had 32 out of 68 similar traits (47.06%). VMC 77-79 and VMC 82- 1174 were the least similar with 28 similar characters (41.18%). Variation was observed in ten characters, the most prominent of which were stool tillering density (profuse for VMC 77-79, light for VMC 82-1174, and intermediate for VMC 86-479) and inner auricle shape (sloping transitional in VMC 77-79, falcate in VMC 82-1174, and sloping transitional in VMC 86-479). All hybrids showed Type V epidermal pattern since no paired cork-silica pairs were observed. Variation in chromosome number at Diakinesis was observed among the three hybrids and within the same accession. The chromosome numbers with the highest frequency were 44 II (2n=88) for VMC 77-79, 55 II (2n=110) for VMC 82-1174, and 47 II (2n=94) for VMC 86-479. Meiosis was generally normal in all hybrids. The only abnormality observed was laggard formation in Metaphase I, Metaphase II, Anaphase I, Anaphase II, and Telophase I but at low frequencies. VMC 82- 1174 had the highest occurrence of laggards (26%) observed during Metaphase I.

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