Agronomic and cytological effects of ethylmethanesulfonate (EMS) on winged bean (Psophocarpus tetragonolobus (L.) D.C. ).

Date

5-1982

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Liwayway M. Engle

Abstract

Effects of ethylmethanesulfonate were studied using several biological measures on two varieties of winged bean, UPS-102 and TPT-1. The parameters included average percent germination, average length of internodes, average plant height, average number of branches, average number of pods, average length of pods, average number of seeds per pod, first day to flowering, frequency of dividing cells, and frequency of chromosomal aberrations in mitosis of seedlings and meiosis of microsporocytes. The doses of EMS treatments chosen reduced the average percent germination, average length of internodes, and average plant height to a comparable degree. increasing EMS concentrations, however, increased the number of days to first open flower. Differences noted in the average number of pods were attributable to the interaction effect of the two varieties of winged bean with the EMS concentration. There was no significant effect on the average number of branches, average length of nods and the average number of seeds per pod. Also, the frequency of chromosomal aberrations observed in Emil treatments were negligible.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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