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Published in Crop Sci 18:126-128 (1978)
© 1978 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Mode of Pollination and Reproduction of Meadowfoam1

M. B. Devine and J. W. Johnson2

Two plant introductions, P.I. 374793 and P.I. 374800, were selected to study the mode of pollination and reproduction of the potential new oil crop, meadowfoam (Limnanthes alba Benth.). Seven pollination methods were compared in the greenhouse, utilizing the percentage of seed set for evaluation.

Pollination methods which assured either self- or cross-pollination were highly effective for seed production. Methods employing undisturbed or emasculated-isolated treatments resulted in inferior seed set. Self-pollination and cross-pollination were equally effective in seed production, indicating that meadowfoam was highly self-compatible and seed from cross-pollination could be easily obtained. The use of glycine bags to isolate artificially crossed flowers did not interfere with seed formation or development. Therefore, glycine bags can be used to isolate flowers from foreign pollen and insure controlled cross-pollination. Observations of calyx pubescence and petal width on F1 progeny from reciprocal crosses revealed that offspring arose as a result of sexual reproduction, Limnanthes.

Key Words: Crossing techniques • Breeding • Emasculation

1 Scientific article No. A-2306, contribution No. 5309 of the Maryland Agric. Exp. Stn., Dep. of Agronomy, College Park, MD 20742. Part of a thesis submitted by the senior author in partial fulfillment of the requirements for the M.S. degree. Research supported in part by grant 12-14-1001-224 from the ARS, USDA.

2 Graduate research assistant and assistant professor, Dep. of Agronomy, Univ. of Maryland, respectively.

Received for publication May 5, 1977.




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