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ARS Home » Southeast Area » Mississippi State, Mississippi » Crop Science Research Laboratory » Genetics and Sustainable Agriculture Research » Research » Publications at this Location » Publication #140480
Title: MOLECULAR DIVERSITY AMONG SWEETPOTATO GERMPLASM WITH HIGH AND LOW ALLELOPATHIC POTENTIAL USING SSRS AND AFLPS

Author
item REDDY, UMESH - ALCORN STATE UNIV
item PADMAVATHI, N - ALCORN STATE UNIV
item SAHA, SURYA - ALCORN STATE UNIV
item BESONG, SAMUEL - ALCORN STATE UNIV
item Saha, Sukumar
item Jenkins, Johnie
item Bain, Amy
item Peterson, Jerold
item Harrison Jr, Howard
item Bohac, Janice

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 1/11/2003
Publication Date: 1/11/2003
Citation: Reddy, U.K., Padmavathi, N., Saha, S., Besong, S., Saha, S., Jenkins, J.N., Bain, A.M., Peterson, J.K., Harrison Jr, H.F., Bohac, J. 2003. Molecular diversity among sweet potato germplasm with high and low allelopathic potential using SSRs and AFLPs [abstract]. Plant and Animal Genome Conference Proceedings. p. 696.

Interpretive Summary: None required.

Technical Abstract: A set of sweetpotato genotypes that has remarkably diverse potential for weed suppression and antibiosis factors for insects through allelopathic interference is identified using the quantitative determination of resin glycoside content in periderm tissue. The genotypes namely Regal, Minamiyutaka, Tinian, Sulfur, Sumor, Excel, Sc1149-19, TIS 9101, PI 399163, Beauregard, Hernandez, and Simon are the genotypes that have resin glycoside (%DW) ranging from 0 to 3.44. The positive correlation of increased glycoside content and allelopathic potential has been demonstrated. The present study is to understand the genetic relatedness at the molecular level among these diverse genotypes. We captured large numbers of microsatellites for use in developing closely linked markers for this important trait. Sequences of 150 of these DNA fragments were determined. Several repeat types were represented including GA, CA, AGA and ACA. Primers were designed and tested to amplify genomic DNA of all the above-mentioned lines.