Archived
This content is available here strictly for research, reference, and/or recordkeeping and as such it may not be fully accessible. If you work or study at University of Kentucky and would like to request an accessible version, please use the SensusAccess Document Converter.
Publication Date
1997
Location
Manitoba and Saskatchewan
Description
Using amphiploid and backcrossed derivatives of Italian ryegrass x tall fescue hybrids, the paper emphasizes the interest of introgression vs amphiploidization in breeding for specific traits such as persistency or seed production from tall fescue or ryegrass resp. Persistency in amphiploid and Lolium-introgressed progenies were assessed in nursery together with variation of flowering traits. Persistency was found lower, on average, in introgressed progenies than in hybrid progenies but with enlarged variability within progeny suggesting possible advantageous rearrangements of fescue chromosomes. Although significantly associated, persistency in both populations was only very little affected by the variations in flowering traits such as flowering date, number of heads in Spring and reheading in Summer. As these traits are related to seed productivity to some extent, it is suggested that selecting for both high persistency and high seed production potential should not be incompatible and could be successfully applied in tetraploid introgressive population resulting from one single backcross of hybrid into ryegrass.
Citation
Ghesquiere, M and Mousset, C, "Persistency in Lolium x Festuca Hybrid Derivatives and its Relationships with Flowering Traits" (1997). IGC Proceedings (1985-2023). 35.
(URL: https://uknowledge.uky.edu/igc/1997/session4/35)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Persistency in Lolium x Festuca Hybrid Derivatives and its Relationships with Flowering Traits
Manitoba and Saskatchewan
Using amphiploid and backcrossed derivatives of Italian ryegrass x tall fescue hybrids, the paper emphasizes the interest of introgression vs amphiploidization in breeding for specific traits such as persistency or seed production from tall fescue or ryegrass resp. Persistency in amphiploid and Lolium-introgressed progenies were assessed in nursery together with variation of flowering traits. Persistency was found lower, on average, in introgressed progenies than in hybrid progenies but with enlarged variability within progeny suggesting possible advantageous rearrangements of fescue chromosomes. Although significantly associated, persistency in both populations was only very little affected by the variations in flowering traits such as flowering date, number of heads in Spring and reheading in Summer. As these traits are related to seed productivity to some extent, it is suggested that selecting for both high persistency and high seed production potential should not be incompatible and could be successfully applied in tetraploid introgressive population resulting from one single backcross of hybrid into ryegrass.
