Indirect response to selection for improving resistance to the Mediterranean corn borer (Sesamia nonagrioides Lef) in maize

Mediterranean corn borer (MCB) (Sesamia nonagrioides Lef) and European corn borer (ECB) (Ostrinia nubilalis Hbn) are the most important biotic stresses of maize in Europe. The first selection program to improve stalk resistance to MCB was carried out in the maize population EPS12. It has shown that...

Full description

Saved in:
Bibliographic Details
Published in:Euphytica 2010-11, Vol.176 (2), p.231-237
Main Authors: Sandoya, G, Butrón, A, Santiago, R, Alvarez, A, Malvar, R. A
Format: Article
Language:English
Subjects:
agronomic traits
Agronomy. Soil science and plant productions
artificial selection
Biological and medical sciences
Biomedical and Life Sciences
Biotechnology
boring insects
Breeding schemes. Varia
Corn
Crop diseases
Fundamental and applied biological sciences. Psychology
genetic correlation
Genetic drift
genetic resistance
Genetics and breeding of economic plants
Genotype & phenotype
grain yield
height
hundred seed weight
Life Sciences
Ostrinia nubilalis
Pest control
pest resistance
phenology
plant breeding
Plant breeding: fundamental aspects and methodology
Plant Genetics and Genomics
Plant Pathology
plant pests
Plant Physiology
Plant resistance
Plant Sciences
Selective breeding
Sesamia nonagrioides
stems
testcrosses
unconscious selection
Varietal selection. Specialized plant breeding, plant breeding aims
weight
Zea mays
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Mediterranean corn borer (MCB) (Sesamia nonagrioides Lef) and European corn borer (ECB) (Ostrinia nubilalis Hbn) are the most important biotic stresses of maize in Europe. The first selection program to improve stalk resistance to MCB was carried out in the maize population EPS12. It has shown that selection was effective to improve stalk resistance to MCB and ECB, while yield was not significantly diminished. The objective of this research was to determine if correlated changes in EPS12 occurred due to selection for resistance to MCB. Cycles of selection per se and testcrosses to three testers were evaluated under MCB and ECB artificial infestation at two different Spanish locations during 2 years. Selection has significantly reduced cob damage, days to silking, plant and ear height, and 100-kernel weight; meanwhile early vigor was increased. These changes could rather be a consequence of unconscious selection and/or the genetic correlation of these traits with resistance than a consequence of genetic drift.
ISSN:0014-2336
1573-5060
DOI:10.1007/s10681-010-0232-x