Effectiveness of mass selection in breeding for downy mildew resistance

Date

11-1968

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Virgilio R. Carangal

Co-adviser

M. Z. Claudio

Abstract

The study was conducted to evaluate the effectiveness of mass selection in concentrating genes for resistance to downy mildew at the Division of Plant Breeding fields in 1968.

No considerable improvement by mass selection was observed in the wet season, dry season and greenhouse experiment. However, there were some entries which showed lower infection in the derived populations (A2 and A3) compared to the original population (A0).

The infection of corn by the disease was found to be promoted by rainy weather. The susceptibility of the plants also differed among ages.

The resistant checked, Ph 9 showed lower infection than the other entries. It was significantly less infected than most introduced varieties but not the local varieties.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1968 A42 S272

Document Type

Thesis

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