Postharvest practices in corn (Zea mays L.) seed production with emphasis on quality protein maize (QPM) varieties at the National Seed Foundation-Institute of Plant Breeding (NSF-IPB)

Date

4-2012

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Maria Fatima O. Mercado

Co-adviser

Jose E. Hernandez

Committee Member

Domingo E. Angeles

Abstract

The Institute of Plant Breeding (IPB) in U.P. Los Baños developed two open pollinated varieties (OVP's) of QPM, namely IPBVar6 in dent and flint populations, referred to as white QPM and another one IPBH4x6, also known as the yellow QPM.

The major practice was conducted at the National Seed foundation- Institute of Plant Breeding (NSF-IPB) UPLB-CA at Los Baños, Laguna from April to May 2011. The objective is to acquire knowledge and to develop necessary skill to maintain the genetic purity of QPM populations as they are seed produced over and over again. The information gained will then be used as additional information about these QPM varieties that would help in their promotion to corn growers as new alternatives to their traditional varieties.

The various stages of postharvest operations with regards to seed production of IPBVar6 were documented. Specific conditions to be given special attention include cob sorting requirements, the moisture contents at shelling time and at the time of seed treatment, and evaluation of QPM character using the light box.

The highest % of protein components were exhibited by the QPM populations, while high % carbohydrate components were shown by non-QPM populations. The highest % starch was found at flint populations and lowest at dent populations.

Tinguib gave the highest percentage of milled grits while Takro showed the lowest grit recovery. The dent-cob selections in IPBVar6 also exhibited higher percentage of grits than the flint-cob selections. However, the flint-cob selections gave the highest percentage of waste. Meanwhile the Pioneer hybrid gave grit recovery comparable to that IPBVar6.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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