Semi-leafless peas have 5 advantages over the normal pea: * easy picking - pods are easy to see as there are few leaves obstructing the view
* stand up - masses of intertwining tendrils act as a self-support system, improving standing, so sticks not needed
* high yields
* water use efficiency is higher.
* ladybirds are much more efficient when they hunted aphids infesting leafless pea plants, rather than the normal variety. Pea leaves are slippery - whereas stems and tendrils provide a more secure footing. So ladybirds fall off the normal variety nearly twice as often as the leafless plants.
Leafless peas have a recessive gene which produces a modification of the common pea plant (Latin name - Pisum sativum L.) leaf morphology, where leaflets are replaced by tendrils, reducing the foliage. The tendrils contribute to plant growth in a similar way to flat leaf structures.
Semi leafless peas have at least 5 advantages over the common garden pea.