It is not possible to tell whether your plant is male or female from the pictures you have provided. Papaya trees can be one of three forms - male, female or hermaphrodite and the sex is determined by the form of the flowers. We would need photos of the flowers to make any kind of meaningful determination for you.

Here is a quick guide:

Male flowers do not have an ovary and do not produce fruit. They produce pollen which fertilizes the female flower. The male flowers are are produced in clusters on a drooping flower stalk

Female flowers are produced from the stem of the plant where the leaf attaches and they possess an ovary which will develop into the fruit. Female papaya flowers have an ovary and are leaf petiole). Female flowers must be pollinated by pollen from a male or hermaphrodite flower in order for a fruit to be produced. If the flower is not pollinated the developing fruit will drop from the plant.

Hermaphrodite flowers have both an ovary and stamens bearing pollen. They are self pollinating and the flowers are produced on the stems at the leaf axils like the female flowers.

More here: http://www.ctahr.hawaii.edu/oc/freepu...