Abstract: Triflfralin is a Patten herbicide. It is reported that Trifluralin have function of making double chromosomes. In the experiment muskmelon seeds of 3# yellow river honeydew in immersing with Thifluralin at 200 times, 400 times, and 600 times for 4h, 6h, 8h respectively were treated under room temperature. The roots tip that treated with Trifluralin were increased obviously in diameter by observed directly. The cell root tip were inspected by microscope. The result showed that the best treatment for inducing tetraploid were obtained by immersing seeds showing valuables unintentionally with trifluralin solution at 400 times, when the muskmelons seeds were immersed for 8h, the induction frequency being 32.2%. The method that seeds were immersed with trifluralin solution was a new and efficient way to obtain tetraploid muskmelons. Meanwhile, the achievements of experiment provide a new guiding basis for ployploid breeding research work of other crops.

Key words: Muskmelon, Trifluralin, Tetraploid, Induction

CLC Number: 

• S652.01