In which of the following plants are autogamy and geitonogamy prevented?

What is self-incompatibility?

This is a genetic mechanism that prevents self-pollination by inhibiting pollen germination or pollen tube growth in the pistil,thereby preventing fertilization.

What is the benefit of outbreeding devices to plants?

Which of the following techniques are included in outbreeding devices?

Which of the following devices promote cross-pollination?
$(i)$ Non-synchronization of pollen release and stigma receptivity
$(ii)$ Anther and stigma are placed at different positions
$(iii)$ Monoecious plants
$(iv)$ Production of dioecious plants
$(v)$ Self-incompatibility
$(vi)$ Anther and stigma are placed close to each other
$(vii)$ Self-compatibility