Genetic diversity of Brassica rapa chinensis (Linnaeus), B. rapa parachinensis (L. H. Bailey) Hanelt and B. oleracea alboglabra (L. H. Bailey) Hanelt using simple sequence repeat markers

Date

4-2007

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Neilyn O. Villa

Abstract

Genetic diversity of 39 accessions of Brassica rapa chinensis (Linnaeus). 28 accessions of B. rapa parachinensis (L. H. Bailey) Hanelt, and 29 accessions of B. oleracea alboglabra (L. Fl. Bailey) Hanelt was studied. Twelve primers were used and produced 122 scorable bands in which 77 were polymorphic. The average rate of polymorphic loci was 71.08%. Genetic diversity among the species was very high indicating great genetic differences within each species. Geographical origin of the species greatly affects genetic diversity. The phylogenetic tree showed that B. rapa chinensis and B. rapa parachinen.sis are genetically closely related to each other. Also, greater genetic diversity was shown within B. oleracea alboglabra species compared to B. rapa chinensis and B. ram parachinensis species. These results provide useful information for crop improvement and in properly selecting parents of crosses to produce agronomically improved lines.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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