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Scissor-Emasculation of Bromus inermis Leyss¹

Bromus inermis was emasculated by clipping the florets with scissors, including about 25% of the anthers, a few days before anthesis. The objectives were: (a) determine the effectiveness of scissor-emasculation for bromegrass; (b) to determine when scissor-emasculation should be done in relation to anthesis; and (c) to compare seed set following scissor-emasculation, manual removal of anthers, and open pollination.

Scissor-emasculation was quite effective in the greenhouse but less effective in the field. Emasculation 4 days before anthesis produced maximum seed set in the field. This treatment produced higher seed set than did manual removal of anthers and only slightly less than the controls. Scissor-emasculation appears more satisfactory than methods previously used if only limited seed is required.

² Formerly graduate assistant, Agronomy Department, and Agronomnist, Plant Science Department, University of New Hampshire, Durham, N. H.

Received for publication January 3, 1966.