Rice Science ›› 2021, Vol. 28 ›› Issue (5): 479-792.DOI: 10.1016/j.rsci.2021.07.008

• Research Paper • Previous Articles     Next Articles

Breeding Novel Short Grain Rice for Tropical Region to Combine Important Agronomical Traits, Biotic Stress Resistance and Cooking Quality in Koshihikari Background

Saichompoo Uthomphon1, Narumol Possawat1, Nakwilai Pawat1, Thongyos Peeranut1, Nanta Aekchupong2, Tippunya Patompong2, Ruengphayak Siriphat3, Itthisoponkul Teerarat4, Bueraheng Niranee5, Cheabu Sulaiman6, Malumpong Chanate1()   

  1. 1Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom 73140, Thailand
    2Tana Group International Co., Ltd., Phan, Chiang Rai 57120, Thailand
    3Rice Science Center & Rice Gene Discovery Unit, Kasetsart University, Kamphaeng Sean Campus, Nakhon Pathom 73140, Thailand
    4Faculty of Agricultural Product Innovation and Technology, Srinakharinwirot University, Bangkok 10110, Thailand
    5Faculty of Science Technology and Agriculture, Yala Rajabhat University, Mueang, Yala 95000, Thailand
    6Faculty of Agriculture, Princess of Naradhiwas University, Narathiwat 96000, Thailand
  • Received:2020-08-10 Accepted:2020-10-26 Online:2021-09-28 Published:2021-09-28


Breeding program strategies to develop novel short grain white rice varieties such as japonica (short grain) that introgress biotic stress resistance and high grain quality have been developed using indica rice (Pin Kaset+4 and Riceberry) for applications in japonica rice (Koshihikari) improvement. Four breeding lines showing promising agronomic performance with short grain and low amylose content (< 20%) were obtained. In addition, sensory testing of these breeding lines showed high scores that similar to Koshihikari. Two promising lines, KP48-1-5 and KP48-1-9, which possessed a combination of four genes resistance to different biotic stresses (Bph3 + TPS + Xa21 + Pi-ta) and four genes for grain quality (GS3 + SSIIa + wxb + badh2), were developed using marker-assisted selection (MAS) with the pedigree method. The current study clearly illustrated the successful use of MAS in combining resistance to multiple biotic stresses while maintaining a high yield potential and preferred grain quality. Moreover, the results indicated that this breeding program, which includes crossing temperate japonica with indica, can create novel short grain rice varieties adapted to a tropical environment, like the japonica type.

Key words: marker-assisted breeding, short grain rice, grain quality, biotic resistance