caa a22 4500 47713369X CHVBK 20180405111711.0 cr unu---uuuuu 170330e19971101xx s 000 0 eng 10.1023/A:1003099709021 doi (NATIONALLICENCE)springer-10.1023/A:1003099709021 Meiotic behavior of passion fruit somatic hybrids, Passiflora edulis f. flavicarpa Degener + P. amethystina Mikan [Elektronische Daten] [L.V. Barbosa, M.L.C. Vieira] Somatic hybrids (SH) obtained by protoplast fusion were investigated for meiotic behavior in order to determine their possible use in breeding programs. Flower buds from four genotypes of SH between P. edulis f. flavicarpa (E) and the wild species P. amethystina (Am) denoted SH (E + Am) # 12, # 13, # 28 and # 35 were collected and the microsporocytes analysed. Meiotic phases showed the presence of abnormalities such as univalents, bivalents and quadrivalents, laggard chromosomes and anaphase bridges. At least 14 bivalents were observed in most of the cells of the hybrid plants. The percentage of cells with quadrivalents ranged from 73.3 in (E + Am) # 13 to 93.3 in (E + Am) # 28 and # 35. Analysis of pollen viability (V) indicated V = 88.23% for # 12, V = 83.86% for # 13, V = 84.20% for # 28, and V = 72.90% for # 35, and fruit development was observed. The high pollen viability, together with the multivalent pairing observed in the four somatic hybrids indicates that these materials can be used for the genetic improvement of yellow passion fruits aiming at introgressions of genes for resistance to diseases and pests. Kluwer Academic Publishers, 1997 passion fruit nationallicence Passiflora edulis f. flavicarpa nationallicence Passiflora amethystina nationallicence somatic hybridization nationallicence meiotic behavior nationallicence pollen viabilty nationallicence Barbosa L.V. Department of Genetics, Escola Superior de Agricultura ‘Luiz de Queiroz', University of São Paulo, P.O. Box 83, 13418-900, Piracicaba, SP, Brazil aut Vieira M.L.C. Department of Genetics, Escola Superior de Agricultura ‘Luiz de Queiroz', University of São Paulo, P.O. Box 83, 13418-900, Piracicaba, SP, Brazil aut Euphytica Kluwer Academic Publishers 98/1-2(1997-11-01), 121-127 0014-2336 98:1-2<121 1997 98 10681 https://doi.org/10.1023/A:1003099709021 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003099709021 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Barbosa L.V. Department of Genetics, Escola Superior de Agricultura ‘Luiz de Queiroz', University of São Paulo, P.O. Box 83, 13418-900, Piracicaba, SP, Brazil aut NATIONALLICENCE 700 1- Vieira M.L.C. Department of Genetics, Escola Superior de Agricultura ‘Luiz de Queiroz', University of São Paulo, P.O. Box 83, 13418-900, Piracicaba, SP, Brazil aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 98/1-2(1997-11-01), 121-127 0014-2336 98:1-2<121 1997 98 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer