English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The grasses of the genus Brachiaria account for  80% of the cultivated pastures in Brazil. Despite its importance for livestock  production, little information is available for breeding purposes. Embrapa has  a population of B. ruziziensis from different regions of Brazil,  representing most of existing variability. This population was used to initiate  an improvement program based on recurrent selection. In order to assist the  genetic improvement program, we estimated the molecular variability among 93  genotypes of Embrapa's collection using ISSR (inter-simple sequence repeat)  markers. DNA was extracted from the leaves. Twelve ISSR primers generated 89  polymorphic bands in the 93 genotypes. The number of bands identified by each  primer ranged from two to 13, with a mean of 7.41. Cluster analysis revealed a  clearly distinct group, containing most of the B. ruziziensis genotypes  apart from the outgroup genotypes. Genetic similarity coefficients ranged from  0.0 to 0.95, with a mean of 0.50 and analysis of molecular variance indicated  higher variation within (73.43%) than among species (26.57%). We conclude that  there is a high genetic diversity among these B. ruziziensis genotypes,  which could be explored by breeding programs.

High degree of genetic diversity among genotypes of the forage grass Brachiaria ruziziensis (Poaceae) detected with ISSR markers