Comparative analysis of mitochondrial genomes of maize CMS-S subtypes provides new insights into male sterility stability.

ABSTRACT:

Background

Cytoplasmic male sterility (CMS) is a trait of economic importance in the production of hybrid seeds. In CMS-S maize, exerted anthers appear frequently in florets of field-grown female populations where only complete male-sterile plants were expected. It has been reported that these reversions are associated with the loss of sterility-conferring regions or other rearrangements in the mitochondrial genome. However, the relationship between mitochondrial function and sterility stability is largely unknown.

Results

In this study, we determined the ratio of plants carrying exerted anthers in the population of two CMS-S subtypes. The subtype with a high ratio of exerted anthers was designated as CMS-Sa, and the other with low ratio was designated as CMS-Sb. Through nex

SUBMITTER: Xiao S 

PROVIDER: S-EPMC9526321 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature