von Bothmer, Roland
- Institutionen för växtvetenskap, Sveriges lantbruksuniversitet
Sammanfattning
The genomic constitution of two species in the genus Psammopyrum, i.e., Ps. athericum (2n = 6x = 42) and Ps. pungens (2n = 8x = 56), was studied by genomic in situ hybridization (GISH). In Ps. athericum, one diploid chromosome set hybridized to a genomic probe from Pseudoroegneria ferganensis (St genome), one diploid set to a probe from Agropyron cristatum (P genome), and one diploid set to a probe from Thinopyrum junceiforme ((EEe)-E-b genomes) or Th. bessarabicum (E-b genome). Substituting the St-genome probe with an L-genome probe from Festucopsis serpentinii resulted in exactly the same hybridization pattern, suggesting a genomic constitution of EStP or ELP for Ps. athericum. The same probes used on Ps. pungens showed two diploid sets of chromosomes hybridizing to the St-genome probe, one diploid set hybridizing to the P-genome probe, and one diploid set hybridizing to the (EEe)-E-b-genome probe. The L-genome probe hybridized to approximately 14 of the chromosomes that were labeled by the St-genome probe. Hence the genomic constitution for Ps. pungens is proposed to be EStStP or EStLP.
Nyckelord
Psammopyrum athericum; Psammopyrum pungens; in situ hybridization; Elytrigia pycnantha; Elytrigia pungens; genome analysis
Publicerad i
Genome
2003, volym: 46, nummer: 1, sidor: 164-169
Utgivare: NATL RESEARCH COUNCIL CANADA
SLU författare
Salomon, Björn
- Institutionen för växtvetenskap, Sveriges lantbruksuniversitet
- Institutionen för växtvetenskap, Sveriges lantbruksuniversitet
UKÄ forskningsämne
Livsmedelsvetenskap
Jordbruksvetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1139/G02-115
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/1733