The main goal of our research group is the genetic mapping and molecular isolation of economically important traits in cassava (Manihot esculenta Crantz) using molecular markers and associated techniques. Our area of research focuses on the identifcation and mapping of all the genes involved in agronomically important traits in of cassava such as high yield and starch content, low cyanide and resistance to diseases. This research will lead to a better understanding of the genetic basis of biological diversity and will improve the breeding program of cassava for better varieties with desirable traits.
The major technique used to achieve our goal is Simple Sequence Repeats (SSR) or microsatellite, and Single Nucleotide Polymorphism (SNP) to generate our genetic maps. QTL analysis and positional gene cloning for important traits are also exploited. Our group will continue to develop new mapping tools to further refine the genetic map of cassava in order to obtain a more detailed picture of the genome and chromosome structure of this economically important crop. The long-term goal is to provide breeders with a fast and automated system for the analysis of qualitative and quantitative traits in their breeding program, also known as Marker Assisted Selection (MAS). In addition, we are also interested in application of SSR markers and DNA barcoding for conservation purposes of rare and endemic plants and animals of Thailand. Furthermore, species identification of medicinal plants is also one of our research interests.

1.Tappiban P, Sraphet S, Srisawad N, Wu P, Han H, Smith DR, Bao J*, Triwitayakorn K**. Effects of cassava variety and growth location on starch fine structure and physicochemical properties. Food Hydrocolloids. 2020, 108: 106074.

2.Tappiban P, Ying Y, Pang Y, Sraphet S, Srisawad N, Smith DR, Wu P, Triwitayakorn K**, Bao, J* Gelatinization, pasting and retrogradation properties and molecular fine structure of starches from seven cassava cultivars. Int J Biol Macromol. 2020, 150: 831-838.

3.Sakdaronnarong C, Sraphet S, Srisawad N, Chantasod R, Jonglertjunya W, Triwitayakorn K*. Rheological characteristics and genotype correlation of cassava root for very high gravity ethanol production: The influence of cassava varieties and harvest times. Biotechnol Appl Biochem. 2019: 105-116.

4.Tappibana P, Smith DR, Triwitayakorn K∗∗, Bao J*. Recent understanding of starch biosynthesis in cassava for quality. Review. Trends Food Sci Technol. 2019. 83: 167–180.

5.Sraphet S, Chantravisut P, Srisawad N, Suksee N, Smith DR, and Triwitayakorn K*. Development and application of SSR markers derived from Bauhinia Strychnifolia a semi-endemic plant in Thailand. Journal of Herbs, Spices & Medicinal Plants. 2018. 24(4): 386-393.