Cyto genetic studies of the intergeneric hybrid euchlaena perennis x zea mays 2. meiotic analysis in an advanced generation as related to viable seed setting in 2 regions of the province of tucuman argentina Boggiatto, A.J.; Andrada, A.B.; Portas-De-Zamudio, A.M. Revista Agronomica del Noroeste Argentino 15(4): 95-111 1978 https://eurekamag.com/research/005/082/005082021.php