Porntip Atichart, Sumontip Bunnag and Piyada Theerakulpisut
Asian Journal of Plant Sciences 6 ( 7 ): 1065 - 1071 , 2007
Juthaporn Khampila, Piyada Theerakulpisut, Kamol Lertrat, Weerasak Saksirirat, Jirawat Sanitchon and Nooduan Muangsan
Asian Journal of Plant Sciences 7 ( 1 ): 18 - 21 , 2008