Biotechnology and Ecology of Pollen

1. Pollen in Biotechnology

   1. Induction of Gametic Selection in situ by Stylar Application of Selective Agents

      • C. J. Simon, J. C. Sanford

      Pages 107-112

   2. Factors Influencing Artificial Gametophyte Selections using Synthetic Stigmas

      • Robert N. Bowman

      Pages 113-118

   3. In Vitro Reaction Between Apple Pollen and Apple Scab Fungus (Venturia inaequalis Cke. Wint.)

      • T. Visser, Q. Van Der Meys

      Pages 119-124

   4. Pollen Selection in Breeding Glasshouse Tomatoes for Low Energy Conditions

      • A. P. M. Den Nijs, B. Maisonneuve, N. G. Hogenboom

      Pages 125-130

   5. Biochemical Alterations in the Sexual Partners Resulting from Environmental Conditions before Pollination Regulate Processes after Pollination

      • M. M. A. Van Herpen

      Pages 131-133

   6. The Use of In Vitro Methods in the Production of Pollen

      • R. I. Greyson, D. R. Pareddy, V. R. Bommineni, D. B. Walden

      Pages 135-137

   7. Maize Pollen Research: Preliminary Reports from Two Projects Investigating Gamete Selection

      • D. B. Walden, R. I. Greyson

      Pages 139-145

   8. Pollen Storage Effects on Early Seedling Growth in Maize

      • P. L. Pfahler

      Pages 147-152

   9. Pollen Selection Through Storage: A Tool for Improving True Potato Seed Quality?

      • N. Pallais, P. Malagamba, N. Fong, R. Garcia, P. Schmiediche

      Pages 153-158

   10. Gametophytic Expression of Heavy Metal Tolerance

       • Karen B. Searcy, David L. Mulcahy

       Pages 159-164

2. Self-Incompatibility and Pollen-Style Interactions

   1. Front Matter

      Pages 165-165

      PDF

   2. The Interaction Between Compatible or Compatible and Self-incompatible Pollen of Apple and Pear as Influenced by Pollination Interval and Orchard Temperature

      • T. Visser

      Pages 167-172

   3. Pollen-Pistil Interaction

      • Gabriella Bergamini Mulcahy, David L. Mulcahy

      Pages 173-178

   4. Self-incompatibility Recognition and Inhibition in Nicotiana alata

      • Neelam Sharma, K. R. Shivanna

      Pages 179-184

   5. Role of Stigma in the Expression of Self-incompatibility in Crucifers in View of Genetic Analysis

      • K. Hinata, K. Okazaki

      Pages 185-190

   6. A New S-Allele and Specific S-Proteins Associated with Two S-Alleles in Nicotiana Alata

      • A. Kheyr-Pour, J. Pernes

      Pages 191-196

   7. Immunodetection of S-gene Products on Nitrocellulose Electroblots

      • M. E. Nasrallah, J. B. Nasrallah

      Pages 197-201

   8. Applications of a New Membrane Print Technique in Biotechnology

      • P. M. O’Neill, M. B. Singh, R. B. Knox

      Pages 203-208

   9. Pollen-Stigma Interactions and S-Products in Brassica

      • T. Gaude, C. Dumas

      Pages 209-214

   10. Isozyme Markers for the Incompatibility Loci in Rye

       • G. Wricke

       Pages 215-220

In Recognition of the Forgotten Generation D. L. MULCAHyl Pollen was long believed to serve primarily a single function, that of delivering male gametes to the egge A secondary and generally overlooked value of pollen is that it serves to block the transmission of many defective alleles and gene combinations into the next generation. This latter function comes about simply because pollen tubes carrying defective haploid genotypes frequently fail to complete growth through the entire length of the style. However, the beneficial consequences of this pollen selection are diluted by the fact that the same deleterious genotypes are often transmitted through the egg at strictly mendelian frequencies (Khush, 1973). Gene expression in the pollen might thus at least appear to be a phenomenon of trivial consequence. Indeed, Heslop-Harrison (1979) rightly termed the gametophytic portion of the angiosperm life cycle, the "forgotten generation." This neglect, however, came about despite subtle but constant indications that pollen is the site of intense gene activity and selection. For example, Mok and Peloquin (1975) demonstrated that relatively heterozygous diploid pollen shows heterotic characteristics whereas relatively homozygous diploid pOllen does not. This was proof positive that genes are expressed (that is, transcribed and translated) in the pollen. 1 Department of Botany, University of Massachusetts Amherst, MA 01003, USA viii However, the implications for pollen biology of even this recent and well known study were not widely recognized.

• Activation
• Arabidopsis thaliana
• Compositae
• Embryo
• Gramineae
• Regulation
• Vivo
• biotechnology
• development
• gene transfer
• influence
• metabolism
• physiology
• temperature

• Department of Botany, University of Massachusetts, Amherst, USA

  David L. Mulcahy, Gabriella Bergamini Mulcahy

• Department of Genetics and Microbial Biology, University of Milano, Milano, Italy

  Ercole Ottaviano

Policies and ethics