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ARS Home » Plains Area » Lubbock, Texas » Cropping Systems Research Laboratory » Plant Stress and Germplasm Development Research » Research » Publications at this Location » Publication #333503

Title: Marker-assisted backcross approach for important agronomic traits of sorghum

item Chopra, Ratan
item Burow, Gloria
item Hughes, Halee
item Burke, John
item Xin, Zhanguo
item Emendack, Yves
item Hayes, Chad

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 9/21/2016
Publication Date: 11/20/2016
Citation: Chopra, R., Burow, G.B., Hughes, H.J., Burke, J.J., Xin, Z., Emendack, Y., Hayes, C.M. 2016. Marker-assisted backcross approach for important agronomic traits of sorghum [abstract]. 2016 Sorghum Improvement Conference of North America. p. 38.

Interpretive Summary:

Technical Abstract: Sequencing technologies are useful for identification of thousands of single nucleotide polymorphisms (SNPs) in a cost effective manner. QTL mapping, association mapping and Mutmap approaches provide opportunities for use of such SNPs to associate and identify genes that control important agronomic traits. We are integrating genomics methods and translating DNA polymorphisms into easy access SNP-DNA markers for efficient breeding of important traits in sorghum. Our laboratory is utilizing Marker-assisted backcrossing (MABC) of valuable SNPs from genes which control or contribute towards enhanced abiotic stress tolerance and yield. We are currently employing MABC approach for yield related traits such as multi-seed (msd), seed size (ss) and stress related traits such as bloomless (blm) and cold tolerance (ct). We are applying marker technology for selection of heterozygotes (F1), parental genotypes and stacking of traits using allele-specific chemistry (KASP). Marker assisted backcross in sorghum breeding is a cost effective approach towards developing lines with valuable traits in an efficient and timely manner.