Meiotic study on sabawel, Mucuna curanii (Family Leguminosae)

Date

3-1992

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Dolores A. Ramirez

Abstract

The chromosome behavior at meiosis of accessions 10 and 11 of Mucuna curanii was studied using the modified acetocarmine technique. The chromosome number of Acc. 10 and Acc. 11 is 2n=22. The abnormality observed at diakinesis was the presence of multivalents which occured in low frequency (3.33%) in accession 10. Other abnormalities that were observed was the presence of laggards at metaphase I (ACC. 10 7.00%. and Acc. 11 8.54%) and at anaphase II (Acc. 10 6.67% and Acc II 7.78%). The S and T types of metaphase configurations at metaphase II were observed in both accessions. At telophase II, the presence of N, V, Y, and T types of cells were observed. Pachytene analyses of Acc. 10 showed that the average length of the chromosomes based from the interpretative drawings ranged from 47.67 to 110 mm. Chromosome 1, 2, 3, 4, 7, 9, and 10 were sub-metacentric and chromosome 5, 6, 8, and 11 are metacentric. In accession 11, the average length of the chromosomes based from the interpretative drawings ranged from 41.34 to 101 mm. Chromosomes 1, 2, 4, 5, 6, 7, 8, and 9 are submetacentric; chromosome 3 and 11 are metacentric and chromosome 10 is sub-telocentric. Pollen fertility counts show a percentage range from 99.0% to 99.6% for Acc. 10 and 99.4 to 99.8 for Acc. 11.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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