Comparison of random and grid-plot techniques in mass selection for improved characteristics in an open- pollinated variety of corn (Zea Mays)

Date

3-1993

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Artemio M. Salazar

Co-adviser

Rodolfo P. Cabangbang

Abstract

Five entries, namely: IPB Var 1 (Co), IPB Var 1 E (Random Mass Selection). IPB 1 E (Grid Mass Selection). IPB Var 1 (Check 1) and Pioneer 3228 (Check 2) were evaluated to compare the effect of two mass selection techniques on earliness, grain yield and other agronomic characters.

IPV Var 1 E (Random Mass Selection) exhibited better performance than IPB Var 1 E (Gric Mass Selection) in terms of earliness, ear size, weight of 1000 grains and grain yield. IPB Var 1 E (Random Mass Selection) and IPB Var 1 E (Grid Mass Selection) tasseled earliest indicating the efficacy of the selection conducted. Selection of earliness affected days of silking more than days to tasseling. Both tasseling and silking dates were earlier by 2.12 and 1.84 days in the two mass selected entries. respectively, after just one cycle of selection, compared to IPB Var 1 E (Co.). There was not much differences in grain yield between random and grid mass selection indicating ineffectiveness of selection for this character. Comparison of grain yield performance was partly affected by poor stand during the experiment.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1993 A42 T65

Document Type

Thesis

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