Sexual and apomictic seed development in the vulnerable grass 'Bothriochloa biloba'

Title
Sexual and apomictic seed development in the vulnerable grass 'Bothriochloa biloba'
Publication Date
2003
Author(s)
Yu, Ping
Prakash, Nallamilli
Whalley, Ralph D
( author )
OrcID: https://orcid.org/0000-0002-2949-9891
Email: rwhalley@une.edu.au
UNE Id une-id:rwhalley
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
CSIRO Publishing
Place of publication
Australia
DOI
10.1071/BT02003
UNE publication id
une:2809
Abstract
Embryological investigations on three populations of the vulnerable grass species 'Bothriochloa biloba' point to a complex reproductive system involving both sexual and apomictic mechanisms. The apomictic mode in this species is far more complicated than has been reported earlier in the genus. It includes non-recurrent parthenogenesis and pseudogamy in the sexual embryo sac, as well as recurrent apospory and adventive embryony from somatic cells. Furthermore, multiple aposporous embryo sacs occur that are not limited to the typical Hieracium and Panicum types. Evidence from bagging individual inflorescences and pollination of dissected gynoecia indicated that sexually reproducing florets were self-compatible. Both diploid and tetraploid plants were found in three populations, and one population had triploid and hexaploid plants as well.
Link
Citation
Australian Journal of Botany, 51(1), p. 75-84
ISSN
1444-9862
0067-1924
Start page
75
End page
84

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