Question

In vegetable seed production, maintaining an adequate physical distance between different varieties of the same species, mainly to prevent unwanted cross-pollination by insects or wind, is especially important for naturally cross-pollinated crops such as cucurbits. This practice is known as:

Q: Answer-In vegetable seed production, maintaining an adequate physical distance between different varieties...

Isolation, maintaining an adequate physical distance between different varieties of the same cross-pollinated species during seed production, prevents unwanted cross-pollination by insects or wind, which is especially critical for naturally cross-pollinated crops such as cucurbits to maintain the genetic purity of the seed produced.