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 Carman, J. G. Articles by Hatch, S. L. Search for Related Content PubMed Articles by Carman, J. G. Articles by Hatch, S. L. Agricola Articles by Carman, J. G. Articles by Hatch, S. L.

Aposporous Apomixis in Schizachyrium (Poaceae: Andropogoneae)¹

Megasporogenesis and embryo sac development of Schizachyrium sanguineum (Retz.) Alst. var. brevipedicellatum (Beal) Hatch (2n=40) and l00), S. sanguineum (Retz.) Alst. var. sanguineum (2n=80), S. cirratum (Hack.) Woot. and Standl. (2n=20), and S. scoparium (Michx.) Nash var. neomexicanum (Nash) Gould (2n=40) were investigated. Results suggest that S. sanguineum var. brevipedicellatum (2n=40 and 100) are facultative and obligate aposporous apomicts, respectively. All other taxa appeared to be sexual.

It may be possible to manipulate apomixis in the potentially important forage and eonservation species, S. sanguineum var. brevipedicellatum and transfer apomixis from this variety (2n=40) into little bluestem (S. scoparium (Michx.) Nash var. frequens F. T. Hubb.), also 2n=40, through wide hybridization.

Key Words: Phase contrast microscopy • Megasporogenesis • Forage breeding

² Former graduate student (currently assistant professor, Dep. of Plant Science, Utah State Univ., Logan, UT 84322) and assistant professor, Range Science Dep., Texas A&M Univ., College Station, TX 77843.

Received for publication March 1, 1982.