2019
DOI: 10.1007/s10681-019-2419-0
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Inter-morphotype hybridization in tall fescue (Festuca arundinacea Schreb.): exploration of meiotic irregularities and potential for breeding

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Cited by 4 publications
(4 citation statements)
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“…Similarly, hybrids of F. mairei × F. glaucescens show preferential formation of bivalents with a very low frequency of multivalents (nine quadrivalents and one trivalent among 200 PMCs [pollen mother cells]) ( Malik and Thomas, 1967 ). By contrast, the hybrids of Continental and Mediterranean morphotypes of tall fescue all display high levels of multivalent formation ( Kopecký et al., 2019 ), suggesting incompatibility of the two regulatory systems, or some epistatic effects. Therefore, we cannot unambiguously clarify if the system evolved once or twice (or even more times).…”
Section: Control Of Chromosome Pairing In Polyploid Grassesmentioning
confidence: 99%
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“…Similarly, hybrids of F. mairei × F. glaucescens show preferential formation of bivalents with a very low frequency of multivalents (nine quadrivalents and one trivalent among 200 PMCs [pollen mother cells]) ( Malik and Thomas, 1967 ). By contrast, the hybrids of Continental and Mediterranean morphotypes of tall fescue all display high levels of multivalent formation ( Kopecký et al., 2019 ), suggesting incompatibility of the two regulatory systems, or some epistatic effects. Therefore, we cannot unambiguously clarify if the system evolved once or twice (or even more times).…”
Section: Control Of Chromosome Pairing In Polyploid Grassesmentioning
confidence: 99%
“…Karyologically, these plants usually carry only one or few chromosome segments of Festuca . Such introgression lines are usually highly unstable and the introgressed segment(s) is/are often lost in subsequent generations ( Kopecký et al., 2019 ). Accordingly, implementing any system capable of preventing associations of homoeologous chromosomes is arguably desirable to stabilize the genomic composition of hybrids.…”
Section: Polyploidy and Homoeologous Chromosome Pairing In Plant Breementioning
confidence: 99%
“…All three tall fescue morphotypes have distinct niches: Continental morphotype is suitable for forage production mainly in the Southeast and Midwest regions whereas Mediterranean has advantages in Southwestern region of USA, and Rhizomatous tall fescue is mainly used as turf grass. As genetic variation exists in tall fescue morphotypes, the complete sterility or low fertility often observed in hybrid progenies obtaining from crossing Continental with either Mediterranean or Rhizomatous tall fescue morphotypes [ 16 18 ]. This can be a consequence of crossing incompatibilities between tall fescue morphotypes [ 18 ].…”
Section: Discussionmentioning
confidence: 99%
“…As genetic variation exists in tall fescue morphotypes, the complete sterility or low fertility often observed in hybrid progenies obtaining from crossing Continental with either Mediterranean or Rhizomatous tall fescue morphotypes [ 16 18 ]. This can be a consequence of crossing incompatibilities between tall fescue morphotypes [ 18 ]. To overcome the crossing incompatibility in breeding programs, it is necessary to identify tall fescue morphotypes using DNA markers during pre-breeding activities.…”
Section: Discussionmentioning
confidence: 99%