Morphogenetic Studies on the Inflorescence of Cotton

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Abstract
The ontogeny and development of the main axis, the fruiting branch, and the flower of Mebane, Sea Island, and Pima cotton are described. The main stem consists of a single indeterminate primary axis from which leaves, stipules, and branches arise in acropetal succession from a terminal meristem. The fruiting branch develops sympodially, and consists of a series of single internodal axes. As each axis is terminated by a flower, a new bud arises to continue the branch. This process is repeated each time a flower is formed. From the flower primordium there arise bracts, sepals, stamens, and petals, and carpels in the order named. The anomalous staminal column is developed from a basic number of 5 stamens, each proliferating to form a considerable number of stamen primordia on each of the 5 lobes of the column. Branching of stamen primordia further increases the number of stamens. The vascular anatomy of the flower is also described.

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