HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Jain, S. K. Articles by Fernandez-Martinez, J. Search for Related Content PubMed Articles by Jain, S. K. Articles by Fernandez-Martinez, J. Agricola Articles by Jain, S. K. Articles by Fernandez-Martinez, J.

Serpentine Sunflower, Helianthus Exills, as a Genetic Resource¹

The common weedy species Helianthus bolanderi Gray and a rare endemic, H. exilis Gray, were studied comparatively for population variation and ecology. Seeds from nature and from populations grown in a greenhouse were used in germination tests and fatty acid analysis of oil. The potential value of H. exilis as a genetic resource resides in its higher linoleic acid content in oil and germination polymorphism related to the response to red/far-red light and low temperatures that may be useful in eliminating dormancy problems.

Key Words: Helianthus bolanderi Gray • Introgression • Adaptid characteristics • Cold tolerance • Fatty acids

² Professor of Agronomy and Range Science, and graduate students in the Dep. of Agronomy and Range Science, Univ. of California, Davis.

Received for publication September 20, 1976.