1Instituto Tecnologico de Estudios Superiores de Monterrey (ITESM), Av, Eugenio Garza Sada, 2501 Sur, C.P. 64790, Monterrey, N.L., Mexico.
2Chemistry and Biology Department, Santa Catarina Marir, Cholula, Apd. 78, C.P. 72 820, Mexico.
3Post Graduate Division, Biology Faculty, UANL, Apd. F-16, C.P. 66450, San Nicolas de los Garza, N.L.
*Author for correspondence
This study reports the responses of 4 glossy and 1 non-glossy sorghum lines to 2,4-D treatments in seed germination, early seedling and callus growth. Although the herbicide negatively affected both the seedling and callus growth in general, the glossy line IS-8311 showed better seedling and callus growth compared to other genotypes. Though the glossy line IS-1096 was also vigorous in callus and seedling growth in the control, it suffered a set back at higher doses of herbicide treatment probably due to its large cell size. IS-8311 under herbicide treatment possessed higher number of cell organelles compared to other glossy genotypes. IS-10961 showed disruption of the callus growth under this treatment.
Callus, cell culture, 2,4-D, germination, glossy sorghum, ultrastructure
