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The Onset and Duration of Stigma Receptivity in Sugar Maple Flowers

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Abstract:

In a study of stigma receptivity in Acer saccharum Marsh., conducted under greenhouse conditions, germination of pollen grains on stigmas was first observed about 22.5 hours after bud burst. The height of stigma receptivity, as measured by pollen-grain germination and pollen-tube growth, occurred at 38 hours after bud burst. Pollen-tube growth also was first observed 22.5 hours after bud burst, but growth did not occur after about 95.5 hours. The pollen applied was in contact with the stigmas for periods of 4 to 10 hours. Five stages of sigma receptivity, based upon morphological characteristics and supplemented by observations on pollen germination and tube growth, are distinguished and described.

Document Type: Journal Article

Affiliations: Associate Plant Geneticist, Northeastern Forest Expt. Sta., Forest Service, U. S. Dept. of Agric.

Publication date: March 1, 1966

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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