Another major change was the ease of separation of the fruits from the infloresences once the stalks have been cut. Grains can separate below the attachment of the bracts or above them. The chaff is removed by winnowing. Separation of portions of the fruit walls is even more difficult. It was cultivated 10,000 years ago.
Wild form are all two row.
The oldest cultivated forms are also two row. This type of barley has one fertile floret in each spikelet of three on the flowering stalk. By 6000 B.C., six row forms had appeared. Each node has two spikelets. Each of three florets in a cluster matures.