Common name : Shuchazao

Scientific name : Camellia sinensis var. sinensis cv. Shuchazao

Chinese name : 舒茶早

Taxonomy : Angiosperms / Eudicots / Ericales / Theaceae

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Overview

Shuchazao is a new clonal variety, bred by Shucheng Agricultural Technology Extension Center of Anhui Province from local population varieties by systematic selection method. In 1995, it was approved by Anhui Provincial crop variety examination and Approval Committee as a provincial improved variety.

The tree is semi open, with dense branches and slightly oblique leaves. The leaf shape is long elliptic, dark green, glossy, thick and soft, the leaf surface is raised, the leaf edge is wavy, and the leaf body is curly. The buds and leaves are light green with medium pubescence and strong tenderness. It has high yield, strong cold resistance and adaptability. It is suitable to be popularized in Northern Anhui green tea area.

The availability of a chromosome-scale genome holds great promise for the understanding of fundamental genomic architecture and evolution, and for the improvement of tea plant quality (such as catechin, theanine and caffeine) and yield.Integrated with GWAS, map-based clone, and bulked segregant analysis, the chromosome-scale genome will accelerate the identification of trait-related variations or genes that can be used for the rapid, effective, and inexpensive selection of available germplasms or cultivars.

Genomic information

Choromsome number(2n): 30

Genome size(Gb): 3.2

Number of read pairs: 1,123,108,661

Longest contigs length(bp): 2,885,680

N50 scaffold length(Mb): 218.1

The longest assembled pseudomolecules(bp): 264,061,170

Coverage of the assembly: 94.7%

Genome BUSCO Analysis Result

C:96.1%[S:82.4%,D:13.7%],F:1.9%,M:2.0%,n:2326

2236 Complete BUSCOs (C)

1917 Complete and single-copy BUSCOs (S)

319 Complete and duplicated BUSCOs (D)

45 Fragmented BUSCOs (F)

45 Missing BUSCOs (M)

2326 Total BUSCO groups searched

Genome: Shuchazao(tri)

BUSCO version: 5.1.2

Dataset: eudicots_odb10

Genomes BUSCO Analysis Plot

Protein BUSCO Analysis Result

C:76.2%[S:67.4%,D:8.8%],F:8.0%,M:15.8%,n:2326

1771 Complete BUSCOs (C)

1567 Complete and single-copy BUSCOs (S)

204 Complete and duplicated BUSCOs (D)

186 Fragmented BUSCOs (F)

369 Missing BUSCOs (M)

2326 Total BUSCO groups searched

Protein: Shuchazao(tri)

BUSCO version: 5.1.2

Dataset: eudicots_odb10

Proteins BUSCO Analysis Plot

Reference

Chen Jie Danet al. Title : The chromosome-scale genome reveals the evolution and diversification after the recent tetraploidization event in tea plant. 2020, 7(1).doi: 10.1038/s41438-020-0288-2