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Science 21 July 1967:
Vol. 157. no. 3786, pp. 325 - 326
DOI: 10.1126/science.157.3786.325
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Articles

Apomixis: Seasonal and Population Differences in a Grass

R. B. Knox 1

1 Department of Botany, Australian National University, Canberra

Changes in incidence of apomictic and sexual embryo sacs were detected in Dichanthium aristatum in an experimental population at six stations covering 27 degrees of south latitude, and during the flowering season in a wild population. Differences were associated with photoperiods prevailing during development of inflorescences. Response to length of day was quantitative, differing in the two strains.


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