Cytological identification of some trisomics of Russian wildrye (Psathyrostachys juncea)

Autor:	A. E. Slinkard, W. F. Campbell, Jun-Zhi Wei, G. J. Scoles, R. Ruey-Chyi Wang
Rok vydání:	1995
Předmět:	Germplasm Karyotype General Medicine Psathyrostachys juncea Biology medicine.disease_cause biology.organism_classification Open pollination Crop Agronomy Pollen Botany Genetics medicine Potential source Ploidy Molecular Biology Biotechnology
Zdroj:	Genome. 38:1271-1278
ISSN:	1480-3321 0831-2796
DOI:	10.1139/g95-167
Popis:	Russian wildrye, Psathyrostachys juncea (Fisch.) Nevski (2n = 2x = 14; NsNs), is an important forage grass and a potential source of germplasm for cereal crop improvement. Because of genetic heterogeneity as a result of its self-incompatibility, it is difficult to identify trisomics of this diploid species based on morphological characters alone. Putative trisomies (2n = 2x + 1 = 15), derived from open pollination of a triploid plant by pollen grains of diploid plants, were characterized by Giemsa C-banding. Based on both karyotypic criteria and C-banding patterns, four of the seven possible primary trisomics, a double-deletion trisomic, and two tertiary trisomics were identified.Key words: Russian wildrye, Psathyrostachys juncea, trisomic, C-banding, karyotype.
Databáze:	OpenAIRE
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