caa a22 4500 477133495 CHVBK 20180405111711.0 cr unu---uuuuu 170330e19970301xx s 000 0 eng 10.1023/A:1002996131315 doi (NATIONALLICENCE)springer-10.1023/A:1002996131315 Crossability relationships among wild potato species with different ploidies and Endosperm Balance Numbers (EBN) [Elektronische Daten] [Ricardo Masuelli, Elsa Camadro] Three wild potato species with different ploidies and Endosperm Balance Numbers (EBN) were crossed in a complete diallel design and the development of the embryo and endosperm as well as the type of seeds produced were analyzed. The compatible crosses - intraspecific intra-EBN and interspecific intra-EBN - produced more than 89% plump seeds, whereas in the incompatible crosses - intraspecific inter-EBN and interspecific inter-EBN - more than 85% of the seeds were not as well developed or were shrunken. The histological analysis revealed that inviable seeds had less developed or collapsed endosperms and thicker endotheliums than viable ones. A gradation of crossabilities was observed among species. The self-compatible species Solanum acaule had good performance as a female but not as a male parent. Among the self-incompatible species, Solanum gourlayi was the best male parent but had a poor performance as a female, whereas Solanum commersonii had an intermediate behavior. Differences in crossabilities among genotypes within species were also observed. These results can not be solely explained by the EBN hypothesis. It is, therefore, suggested that the EBN may be part of a more complex system of interspecific barriers acting at the pre- and post-zygotic levels. Kluwer Academic Publishers, 1997 crossability nationallicence Endosperm Balance Number (EBN) nationallicence interspecific crosses nationallicence potato nationallicence Solanum nationallicence Masuelli Ricardo Departamento de Ciencias Biológicas, Facultad de Ciencias Agrarias, U.N. de Cuyo C.C. 7 Chacras de Coria (5505), Mendoza, Argentina aut Camadro Elsa Unidad Integrada Balcarce, C.C. 276 (7620), Balcarce, Buenos Aires, Argentina aut Euphytica Kluwer Academic Publishers 94/2(1997-03-01), 227-235 0014-2336 94:2<227 1997 94 10681 https://doi.org/10.1023/A:1002996131315 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1002996131315 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Masuelli Ricardo Departamento de Ciencias Biológicas, Facultad de Ciencias Agrarias, U.N. de Cuyo C.C. 7 Chacras de Coria (5505), Mendoza, Argentina aut NATIONALLICENCE 700 1- Camadro Elsa Unidad Integrada Balcarce, C.C. 276 (7620), Balcarce, Buenos Aires, Argentina aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 94/2(1997-03-01), 227-235 0014-2336 94:2<227 1997 94 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer