1. Pollen tube development in two species of Trithuria (Hydatellaceae) with contrasting breeding systems

   • Mackenzie L. Taylor
   • Joseph H. Williams

   Original Article 25 February 2012 Pages: 83 - 96

   

2. Differential effects of polyploidy and diploidy on fitness of apomictic Boechera

   • Marie-Luise Voigt-Zielinski
   • Marcin Piwczyński
   • Timothy F. Sharbel

   Original Article 25 February 2012 Pages: 97 - 109

   

3. Gamete formation via meiotic nuclear restitution generates fertile amphiploid F₁ (oat × maize) plants

   • R. G. Kynast
   • D. W. Davis
   • H. W. Rines

   Original Article 25 February 2012 Pages: 111 - 122

   

4. Characterization of callase (β-1,3-d-glucanase) activity during microsporogenesis in the sterile anthers of Allium sativum L. and the fertile anthers of A. atropurpureum

   • Krystyna Winiarczyk
   • Jolanta Jaroszuk-Ściseł
   • Kamila Kupisz

   Original Article Open access 23 March 2012 Pages: 123 - 131

   

5. Morphological, histological and ultrastructural changes in the olive pistil during flowering

   • C. Suárez
   • A. J. Castro
   • M. I. Rodríguez-García

   Original Article 04 April 2012 Pages: 133 - 146

   

6. Ultrastructural and cytochemical studies on oogenesis of the fern Pteridium aquilinum

   • Jian-Guo Cao
   • Xi-Ling Dai
   • Quan-Xi Wang

   Original Article 05 April 2012 Pages: 147 - 156