This trait was found in one of the virus-derived-mottled cultures. The crowns of the affected seeds rarely collapse. Most of the reduction affects the sides of the seeds. Classification is reasonably accurate. The gene is located on chromosome 5. The backcross data involving Pr are as follows: Pr Sh 977, Pr sh 255, pr Sh 301, pr sh 1021. sh4 has been reported on chromosome 5 but tests for allelism were negative. The symbol sh5 is suggested.

G.F. Sprague

Please Note: Notes submitted to the Maize Genetics Cooperation Newsletter may be cited only with consent of the authors.

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