Crossability barriers between the tetraploid Ulmus americana and five other diploid elm species were investigated using both fluorescence and scanning electron microscopy. Both pollen germination and pollen tube development were inhibited in all interspecific crosses. Pollen tube behavior on the sti
Barriers to the hybridization ofPassifloraspecies
✍ Scribed by Fernando R. Payán; Franklin W. Martin
- Book ID
- 104634766
- Publisher
- Springer
- Year
- 1975
- Tongue
- English
- Weight
- 369 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0014-2336
No coin nor oath required. For personal study only.
✦ Synopsis
To avoid compatibility barriers among species of passion fruit that do not normally set fruit, hormones were applied to the stigma following cross pollination, In other cases, two of the three stigmas were cross pollinated, and one was self-pollinated. With such treatments, abscission of the flower was often delayed, and seeds were produced. Seeds were often aborted at an early stage or failed to germinate. Seven new hybrid combinations were produced.
📜 SIMILAR VOLUMES
Results of reciprocal crosses between Solanum verrucosum (2n = 2x --24) and S. bulbocastanum (2n -2x = 24) are described in terms of pollen tube behaviour in styles, of berry and seed set, of fertility and of meiotic behaviour of the Fx hybrids. Pollen tube growth of S. verrucosum is strongly inhibi