caa a22 4500 477135234 CHVBK 20180405111715.0 cr unu---uuuuu 170330e19970701xx s 000 0 eng 10.1023/A:1003037920247 doi (NATIONALLICENCE)springer-10.1023/A:1003037920247 Numerically unreduced (2n) gametes and sexual polyploidization in Actinidia [Elektronische Daten] [Guijun Yan, A. Ferguson, Mark McNeilage, Brian Murray] This is the first report on the production of numerically unreduced (2n) gametes in Actinidia species. Their occurrence was apparent from direct observations of microporogenesis in 2x, 3x, 4x and 6x plants and was inferred from ploidy analysis of progenies from 4x-2x and 2x-4x crosses. Both male and female plants were found to produce 2n gametes. 2n gamete producers were detected only in interploidy crosses. The observed frequency of 2n gametes was either similar to or towards the lower end of the ranges reported for other genera. The role of sexual polyploidization in the evolution of the genus is discussed. Kluwer Academic Publishers, 1997 Actinidia nationallicence kiwifruit nationallicence 2n gametes nationallicence sexual polyploidization nationallicence Yan Guijun School of Biological Sciences, University of Auckland, Private Bag 92 019, Auckland, New Zealand aut Ferguson A. Horticulture and Food Research, Institute of New Zealand, Private Bag 92 169, Auckland, New Zealand aut McNeilage Mark Horticulture and Food Research, Institute of New Zealand, Private Bag 92 169, Auckland, New Zealand aut Murray Brian School of Biological Sciences, University of Auckland, Private Bag 92 019, Auckland, New Zealand aut Euphytica Kluwer Academic Publishers 96/2(1997-07-01), 267-272 0014-2336 96:2<267 1997 96 10681 https://doi.org/10.1023/A:1003037920247 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003037920247 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yan Guijun School of Biological Sciences, University of Auckland, Private Bag 92 019, Auckland, New Zealand aut NATIONALLICENCE 700 1- Ferguson A. Horticulture and Food Research, Institute of New Zealand, Private Bag 92 169, Auckland, New Zealand aut NATIONALLICENCE 700 1- McNeilage Mark Horticulture and Food Research, Institute of New Zealand, Private Bag 92 169, Auckland, New Zealand aut NATIONALLICENCE 700 1- Murray Brian School of Biological Sciences, University of Auckland, Private Bag 92 019, Auckland, New Zealand aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 96/2(1997-07-01), 267-272 0014-2336 96:2<267 1997 96 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer