Genetic control of partial resistance to Asian soybean rust
The genetic control of rust resistance was studied using the Caiapônia x IAC-100 and Luziânia x Potenza crosses. The F2 and F3 generations were evaluated. Rust severity was quantified through visual assessment of the middle third of three leaflets per plant and performed by three different evaluators; the average score was calculated foreach individual plant. From these data, we estimated the mean and variance of the genetic components by employing the weighted least squares method. The estimated number of genes and broad- and narrow-sense heritabilities were also obtained. It was concluded that rust resistance is a characteristic controlled by 2 to 23 genes that are predominantly dominant. The estimate of narrow-sense heritability was greater than 70% for the Caiapônia x IAC-100 cross, and the wide-sense heritability was greater than 60% for the Luziânia x Potenza cross; thus, it is possible to successfully select resistant individuals in early generations.
Main Authors: | , |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Editora da Universidade Estadual de Maringá - EDUEM
2014
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-86212014000100003 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
oai:scielo:S1807-86212014000100003 |
---|---|
record_format |
ojs |
spelling |
oai:scielo:S1807-862120140001000032014-04-24Genetic control of partial resistance to Asian soybean rustMartins,Juliana Araújo SantosJuliatti,Fernando Cézar Glycine max Phakopsora pachyrhizi dominance variance heritability race non-specific disease resistance The genetic control of rust resistance was studied using the Caiapônia x IAC-100 and Luziânia x Potenza crosses. The F2 and F3 generations were evaluated. Rust severity was quantified through visual assessment of the middle third of three leaflets per plant and performed by three different evaluators; the average score was calculated foreach individual plant. From these data, we estimated the mean and variance of the genetic components by employing the weighted least squares method. The estimated number of genes and broad- and narrow-sense heritabilities were also obtained. It was concluded that rust resistance is a characteristic controlled by 2 to 23 genes that are predominantly dominant. The estimate of narrow-sense heritability was greater than 70% for the Caiapônia x IAC-100 cross, and the wide-sense heritability was greater than 60% for the Luziânia x Potenza cross; thus, it is possible to successfully select resistant individuals in early generations.info:eu-repo/semantics/openAccessEditora da Universidade Estadual de Maringá - EDUEMActa Scientiarum. Agronomy v.36 n.1 20142014-03-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-86212014000100003en10.4025/actasciagron.v36i1.16919 |
institution |
SCIELO |
collection |
OJS |
country |
Brasil |
countrycode |
BR |
component |
Revista |
access |
En linea |
databasecode |
rev-scielo-br |
tag |
revista |
region |
America del Sur |
libraryname |
SciELO |
language |
English |
format |
Digital |
author |
Martins,Juliana Araújo Santos Juliatti,Fernando Cézar |
spellingShingle |
Martins,Juliana Araújo Santos Juliatti,Fernando Cézar Genetic control of partial resistance to Asian soybean rust |
author_facet |
Martins,Juliana Araújo Santos Juliatti,Fernando Cézar |
author_sort |
Martins,Juliana Araújo Santos |
title |
Genetic control of partial resistance to Asian soybean rust |
title_short |
Genetic control of partial resistance to Asian soybean rust |
title_full |
Genetic control of partial resistance to Asian soybean rust |
title_fullStr |
Genetic control of partial resistance to Asian soybean rust |
title_full_unstemmed |
Genetic control of partial resistance to Asian soybean rust |
title_sort |
genetic control of partial resistance to asian soybean rust |
description |
The genetic control of rust resistance was studied using the Caiapônia x IAC-100 and Luziânia x Potenza crosses. The F2 and F3 generations were evaluated. Rust severity was quantified through visual assessment of the middle third of three leaflets per plant and performed by three different evaluators; the average score was calculated foreach individual plant. From these data, we estimated the mean and variance of the genetic components by employing the weighted least squares method. The estimated number of genes and broad- and narrow-sense heritabilities were also obtained. It was concluded that rust resistance is a characteristic controlled by 2 to 23 genes that are predominantly dominant. The estimate of narrow-sense heritability was greater than 70% for the Caiapônia x IAC-100 cross, and the wide-sense heritability was greater than 60% for the Luziânia x Potenza cross; thus, it is possible to successfully select resistant individuals in early generations. |
publisher |
Editora da Universidade Estadual de Maringá - EDUEM |
publishDate |
2014 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-86212014000100003 |
work_keys_str_mv |
AT martinsjulianaaraujosantos geneticcontrolofpartialresistancetoasiansoybeanrust AT juliattifernandocezar geneticcontrolofpartialresistancetoasiansoybeanrust |
_version_ |
1756432560368386048 |