Meiosis in guava Psidium guajava Linn : (Myrtales:Myrtaceae)

Date

11-1992

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

Acetocarmine squash preparations of anthers of 'guava (P. gaujalava L.) were done to determine its chromosome number and meiotic behavior. Samples were collected from Canlubang and Ste. Rosa. Laguna. The chromosome number was 2n=22. The meiotic states were highly normal in all samples with metaphase I. anaphase I. telophase I. metaphase II. anaphase II and telophase II having normal cell frequencies of 69.7%. 83.94%. 100%. 1000. 92.5% and 100%. respectively. At metaphase I. the most frequent abnormalities were laggards (22.34%). late or non congression (4.47%) and early disjunction (3.49%). Anaphase I exhibited laggards (12.28%) and late disjunction (3.78%). Differential disjunction (5.84%) and asynchronous movement (1.66%) were observed at anaphase II. No aberration was observed a telophase I. metaphase II and telophase II. The pollen fertility of P. guava was 94.16%.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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