Breeding behaviour of Kunzea pomifera (Myrtaceae): self-incompatibility, intraspecific and interspecific cross-compatibility
T Page, GM Moore, J Will, GM Halloran
SEXUAL PLANT REPRODUCTION | SPRINGER | Published : 2010
To examine breeding system characteristics of the endemic Australian prostrate shrub Kunzea pomifera, artificial hybridisations were undertaken using thirteen different genotypes of K. pomifera, to elucidate: (1) self-incompatibility, (2) intraspecific cross-compatibility in the species and (3) interspecific cross-compatibility with each of K. ambigua and K. ericoides. K. pomifera exhibited very low self-compatibility, with the barrier to self-fertilisation being prevention of pollen-tube growth in the style or ovary. Following intraspecific pollination amongst a number of different genotypes of K. pomifera, 38.4% of pollinated flowers developed fruit; arrest of compatible pollen-tubes in th..View full abstract
T. P. was the recipient of an Australian Postgraduate Award (APA), and the project received funding support from the Rural Industries Research and Development Corporation (RIRDC) and RWS Nicholas Agricultural Science Scholarship. Neville Bonney kindly donated the 'Ba' accession for use in this study.