caa a22 4500 475817605 CHVBK 20180406123813.0 cr unu---uuuuu 170329e20000701xx s 000 0 eng 10.1007/PL00009840 doi (NATIONALLICENCE)springer-10.1007/PL00009840 Effect of pollen competition and stigmatic receptivity on seed set in white clover ( Trifolium repens L.) [Elektronische Daten] [A. A. Cowan, A. H. Marshall, T. P. T. Michaelson-Yeates] Abstract : The effect of competition between incompatible and compatible pollen grains on the seed production of white clover was studied. Stigmatic receptivity was also studied. A selection line of white clover that has red leaves was used as a pollen donor and as a genetic marker to allow determination of the pollen donor responsible for ovule fertilisation. Results show that incompatible pollen did not inhibit compatible pollen grains from fertilising ovules and producing seeds, although it did slightly impair seed yield. At temperatures of 20/10°C (day/night) stigmas of white clover remained receptive to additional pollination up to 32 h after an initial compatible pollination and 40 h after an incompatible pollination. The results imply that factors other than inadequate pollination and the self-incompatibility system are responsible for failure of white clover to attain its potential seed yield. Springer-Verlag Berlin Heidelberg, 2000 Key words Trifolium repens L nationallicence Pollen competition nationallicence Stigmatic receptivity nationallicence Fertilisation nationallicence Seed yield nationallicence Cowan A. A. Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, Wales SY23 3EB, UK e-mail: alex.cowan@bbsrc.ac.uk Fax: +44-0-1970 828357, GB aut Marshall A. H. Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, Wales SY23 3EB, UK e-mail: alex.cowan@bbsrc.ac.uk Fax: +44-0-1970 828357, GB aut Michaelson-Yeates T. P. T. Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, Wales SY23 3EB, UK e-mail: alex.cowan@bbsrc.ac.uk Fax: +44-0-1970 828357, GB aut https://doi.org/10.1007/PL00009840 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/PL00009840 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cowan A. A. Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, Wales SY23 3EB, UK e-mail: alex.cowan@bbsrc.ac.uk Fax: +44-0-1970 828357, GB aut NATIONALLICENCE 700 1- Marshall A. H. Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, Wales SY23 3EB, UK e-mail: alex.cowan@bbsrc.ac.uk Fax: +44-0-1970 828357, GB aut NATIONALLICENCE 700 1- Michaelson-Yeates T. P. T. Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion, Wales SY23 3EB, UK e-mail: alex.cowan@bbsrc.ac.uk Fax: +44-0-1970 828357, GB aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer