Response to mass selection in four maize composites

Date

4-1983

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Manuel M. Lantin

Abstract

A study was conducted to determine the responce to mass selection for prolificacy and for earliness in four maize composites and to evaluate the affects of mass selection for prolificacy and for earliness on other agronomic traits.

Days to silking was significantly and linearly decreased per cycle of selection in EDC1 and EDC 2. Grain moisture content and ear height were significantly reduced while plant height, ear length, ear diameter, number of ears per head per plant and grain yield were not affected by mass selection for early silking. Early silking varieties performed better than the check entries due to their ability to escape drought.

number of ears per plant was linearly increased per cycle of selection in PrDC1 and PrDC2. However, grain yield was not significantly changed. Plant per ear height were significantly increased while grain moisture content and ear diameter were significantly reduced as a result of mass selection for prolificacy. Selected prolific corn varieties performed better than check entries due to partly to their prolificacy per se and early silking enabling them to escape drought. Moisture stress during the experiment resulted to high percentage of barren plants on the check entries.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1983 A42 R58

Document Type

Thesis

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