Duelo de Pasiones (English: Duel of Passions) is a Mexican telenovela produced by Juan Osorio for Televisa.^[1] The telenovela based on radionovela Flor del Campo. It premiered on April 17, 2006, and ended on October 27, 2006.

Erika Buenfil, Ludwika Paleta and Pablo Montero starred as protagonists, while Sergio Goyri, Fabiola Campomanes, Alejandro Ávila and Rafael Rojas starred as antagonists. Zaide Silvia Gutiérrez and Ana Martin starred as stellar performances.

Álvaro Montellano receives a letter addressed for his wife and written by his farmhand, José Gómez. Upon reading it he thinks his wife is in love with the farmhand and was planning to run away. In reality, the letter was meant for his sister Mariana Montellano, who loves José and even has a daughter with him, but Alfonsina, who is still in love with Álvaro, intercepted it and made him believe it was for his wife. Álvaro suffers from a disease called celotipia, caused by a traumatic experience as a child when his father committed suicide after learning his wife had cheated on him with their farmhand.

Consumed by jealousy and hatred toward his wife and her affair, he shuns her and their daughter, Alina, and exiles his wife to another, Sierra Escondida, where she continues to suffer his abuse and humiliation. Believing Alina to be the result of this liaison and not his daughter, Álvaro threatens the life of Alina's mother and forces Alina to live in a cave, leaving her in the care of the local healer, Luba and her son Gaspar, while Soledad. Here, Alina becomes known by the name of 'Flor del Campo'.

To make matters worse, before being taken away by her father, Alina had met Emilio Valtierra, a military officer, at a party. They both had fallen in love and had promised to meet each other in a cafe, a date which Alina never made. His girlfriend, Thelma, looking for Emilio, falls prey to Gaspar, and in a drunken frenzy sleeps with him. Thelma makes Emilio believe she is carrying his child, and he accepts staying with her.

Two years pass and Emilio still believes Alina left him. When he is assigned to a mission on Sierra Escondida, he meets Flor del Campo, and does not recognize her as Alina, due to her simple dress. Álvaro, wanting Alina to suffer, makes Emilio believe she died in an accident. Emilio believes him, and as soon as he sees Flor del Campo (really Alina), he thinks its Álvaro's illegitimate daughter and initially makes her suffer because of what Alina did to him. Pretty soon the couple engages in a Duel of Pasions as they try to fight for their love even though others stand in their way.

Later, Emilio learns that Flor is really Alina after Alina goes into his house to get back her heart necklace which was the one he had given her at the beginning of the story. He tries to take her but she refuses to let him help after being threatened by her father saying that he will kill her mother.