Chromosome transmission in BC4 progenies of intergeneric hybrids between Saccharum spp. and Erianthus arundinaceus (Retz.) Jeswiet

Scientific Reports
Shan YangMuqing Zhang

Abstract

Intergeneric hybrids between Saccharum spp. and Erianthus arundinaceus and clones derived from these hybrids and backcrosses to Saccharum spp. were used to study the transmission of E. arundinaceus chromosomes by genomic in situ hybridization (GISH). True hybrid progenies were precisely identified using PCR with a primer pair, AGRP52/53. The results showed that AGRP52/53 was an E. arundinaceus-specific primer pair and could be used as molecular marker to assist breeding. EaHN92, a 364 bp E. arundinaceus-specific tandem repeat satellite DNA sequence, was cloned from the E. arundinaceus clone HN92-105 with AGRP52/53, and was localized on sub-telomeric regions of all E. arundinaceus chromosomes. YCE06-61, a BC3 progeny, had 7 E. arundinaceus chromosomes and its progenies had approximately 1-6 E. arundinaceus chromosomes. The number of E. arundinaceus chromosomes in true hybrids appeared as Gaussian distribution in 3 cross combinations. In addition, GISH detected intergeneric chromosome translocation in a few progenies. Hence, screening clones containing approximately 1-2 E. arundinaceus chromosomes without translocation could be used for sorting and sequencing E. arundinaceus chromosomes. This study provides a method for breeders ...Continue Reading

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Citations

May 23, 2020·PloS One·Carolina MedeirosMonalisa Sampaio Carneiro
Aug 28, 2021·International Journal of Molecular Sciences·Fan YuZuhu Deng

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Datasets Mentioned

BETA
MH133205
Y13453.1
Y13452.1

Methods Mentioned

BETA
PCR
electrophoresis

Software Mentioned

AxioVision

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