Chromosome banding patterns of Zea mays (corn), Zea diploperennis (teosinte) and their F1, BC1 and BC2 hybrids.

Date

3-1994

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Dolores A. Ramirez

Abstract

The G-handing technique was applied to the chromo-some. of mays (1-12), Z. diploperennis (Acc. 167) and their F1, BC1 and BC, hybrids, which were obtained from root tips. Bands corresponding to the heterchromatic regions were produced in the five populations and banding patterns were established and analyzed. Karyotype analysis of three cells per population showed that there is homology between the parentals in terms of relative lengths, arm ratios, and centromeric positions. The hybrids were observed to have characteristics within the range of parentals. Comparison of the banding patterns established in the five populations showed that the maize chromosomes have terminal and subterminal bands as compared to the terminal as well as the intercalary bands of the teosinte. Further-more, more bands were observed in the teosinte. The chromosome banding patterns in the hybrids showed both banding patterns exhibited by the parentals. In the P.C1 and BC,, most of the maize or teosinte chromosomes were identified.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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