Parthenocarpy: Parthenocarpy could be defined as a process by which fruits are produced without the process of fertilization of ovules. A parthenocarpic fruit is devoid of embryo and endosperm and therefore does not have any seeds. That is why they are also known as seedless or virgin fruits.
Vegetative: This generally takes place without pollination and due to the absence of pollination, no seeds are produced within the fruits.
Stimulative: It generally takes place without the process of fertilization. This condition occurs when the ovipositor of a wasp is inserted into the ovary of a flower and can also be achieved by flowing air or plant growth regulators into the unisexual flowers that are present inside the syconium.
Stenospermocarpy: This is a unique type of parthenocarpy where fertilization does take place and the seed begins to develop but it eventually aborts. There’s a seed trace that can be observed within the fruit and it can be outlined where seed development was terminated. This type of Parthenocarpy can be seen in seedless grapes and watermelons.
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