# Chromosome-level genome assembly of the ornamental plant Alcea rosea

## TL;DR

This paper presents a high-quality chromosome-level genome assembly for the ornamental plant Alcea rosea, providing insights into its genetic structure and composition.

## Contribution

The study provides the first chromosome-level genome assembly for Alcea rosea with high completeness and detailed annotation of genes and repetitive elements.

## Key findings

- The genome assembly has a size of 1.01 Gbp with a scaffold N50 of 52.57 Mbp and 99.6% completeness.
- Transposable elements, especially LTRs, make up 48.44% of the genome.
- A total of 51,436 genes were annotated with average gene and CDS lengths of 2739.92 bp and 1242.54 bp, respectively.

## Abstract

Alcea rosea, a member of the Malvaceae family, is celebrated for its rich floral palette and global horticultural significance. Here, we present a high-quality reference genome for A. rosea, achieving a genome assembly size of 1.01 Gbp, with a Contig N50 length of 36.61 Mbp. The genome sequence was successfully mapped to 21 chromosomes, and the scaffold N50 length reached 52.57 Mbp, with a scaffold genome completeness of 99.6%. A total of 565.84 Mbp (comprising 56% of the genome) of repetitive sequences were identified, with transposable elements being predominant, particularly long terminal repeat (LTR) elements, which accounted for 48.44% of the genome. 51,436 genes were annotated. Among these predicted genes, the average gene length and coding sequence (CDS) length were 2739.92 bp and 1242.54 bp, respectively.