Fruit Set & Fruit Ripening

Germinating pollen grain is not only in important structure for safe transfer of gametes and insurance for fertilization but also a rich source of auxis as well as commonly stimulating the tissues of the style and ovary to produce move auxin. This auxin is necessary for fruit set i.e. retention of the ovary, which becomes the fruit after fertilization. Without it abscission of flowers normally occurs, leading to low fruit yields.

Fruit Ripening: 

     After fertilization the ovary and the ripe seeds continue to produce auxins which stimulate fruit development.

       Developing seeds are not only a rich source of auxins and gibberellins but also of cytokinins. These growth substances are mainly associated which development of the embryo and accumulation of food reserves, in the seed and sometimes in the pericarp (Fruit Wall).

Climatric: 

       Fruit ripening is often accompanied by a burst of respiratory activity called climatric. This is associated with ethane production, which helps in ripening of the fruit.