On the Inheritance of Apomixis in Parthenium argentatum

  title={On the Inheritance of Apomixis in Parthenium argentatum},
  author={Dylan Gerstel},
  journal={Botanical Gazette},
  pages={96 - 106}
  • D. Gerstel
  • Published 1 September 1950
  • Biology
  • Botanical Gazette
1. In feral guayule the diploids (2n = 36) reproduce sexually, but polyploids are facultative apomicts. A fertile polyhaploid with the diploid number of chromosomes but facultatively apomictic in its reproduction was crossed with a diploid. If the polyhaploid was used as a female, the following progeny classes resulted: maternals, diploid F1, triploids, and plants with higher chromosome numbers (doubtful cases). 2. The reciprocal cross, sexual diploid x polyhaploid, produced only diploid F1… 
Apomixis and sexuality in the Potentilla argentea complex II. Crosses within the complex
An account is given of crosses between taxa within the Potentilla argentea complex, where F1 hybrids from crosses between sexual autotetraploid and hexaploid apomicts showed a varying mode of reproduction.
Cytogenetic analyses of intersectional hybrids between Parthenium argentatum and Parthenium confertum
Chromosome association in the hybrids indicated that P. confertum parent may be a tetraploid with suppressed multivalent formation.
Cytogenetics and reproductive behavior of induced and natural tetraploid guayule (Parthenium argentatum Gray)
The interspecific hybridization of guayule as female with Parthenium rollinsianum Rzedowski was used to compare the mode of reproduction of the induced tetraploids with that of natural tetraPLoids, suggesting that the apomictic mode of reproduced in guayules is a consequence of mutations which accumulated in the natural polyploids.
Dihaploidy yields diploid apomicts and parthenogens in Erigeron (Asteraceae).
It is inferred that formation of dihaploid seeds requires the parthenogenesis locus, and one of the first reports of diploid apomixis in the Asteraceae demonstrates that both diplospory and parthenogenic can be transmitted and expressed at a high level in the diploids condition.
Nature and Inheritance of Apomixis in Bothriochloa and Dichanthium
Three independent phenomena operating simultaneously: normal sexual reproduction, parthenogenetic autonomous development of embryos, and nucellar apospory, which suggests some sort of balanced heterozygote system seems to be operating here.
Mendelian genetics of apomixis in plants.
This review shows how molecular markers and superior phenotypic methods have been used to clarify the genetics of apomixis in monocots as well as dicots during the past 15 years.
Discovery of highly apomictic and highly amphimictic dihaploids in Allium tuberosum
Although TeD1 is poorly fertile, the present results encourage further screening trials for highly fertile, highly amphimictic dihaploids, which may be effective counterparts to KaD2 in diploid-level cross experiments to genetically analyze apomixis in A. tuberosum.
Haploids in flowering plants: origins and exploitation.
  • J. Dunwell
  • Biology, Medicine
    Plant biotechnology journal
  • 2010
The range of techniques available for the isolation or induction of haploids are described and their value in a range of areas are discussed, from fundamental research on mutant isolation and transformation, through to applied aspects of quantitative genetics and plant breeding.
Gametophytic apomixis: elements and genetic regulation.
Gametophytic apomixis implies formation of unreduced embryo-sacs and capacity of their egg cells for parthenogenetic development. Each of these processes, as well as their union to give matromorphous


Morphology of reproduction in guayule and certain other species of Parthenium
The present study on megasporogenesis, megagametogenesis, and embryo formation of Parthenium was undertaken in response to the need for reinvestigation of the morphology of reproduction in guayule.
A fertile poly - haploid in Bromus inertnis
  • Jour . Hered .