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Publication Date
1993
Location
New Zealand
Description
Hybrids between perennial ryegrass (Lolium perenne L.) accessions from Romania and Hungary were produced in an auempt to improve cold lolerance. Winter survival of hybrids was poorer than expected on the basis of parent performance. In a second breeding programme, introgression of genes from toll fescue (Festuca arundinacea Schreb.) into Italian ryegrass (Lolium multiflorum Lam,) was achieved using pentaploid hybrids between letraploid Italian ryegrass and hexaploid all fcscue and backcrossing twice to diploid Italian ryegrass, Good response to selection for improved drought tolerance was obtained in backcrossed progeny. It appears that in breeding for improved tolerance to environmental stress, there are advantages in introgressing a limited number of genes rather than combining complete genomes.
Citation
Humphreys, M O.; Humphreys, M W.; and Thomas, H, "Breeding Grasses for Adaptation to Environmental Problems" (1993). IGC Proceedings (1985-2023). 17.
(URL: https://uknowledge.uky.edu/igc/1993/session12/17)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Breeding Grasses for Adaptation to Environmental Problems
New Zealand
Hybrids between perennial ryegrass (Lolium perenne L.) accessions from Romania and Hungary were produced in an auempt to improve cold lolerance. Winter survival of hybrids was poorer than expected on the basis of parent performance. In a second breeding programme, introgression of genes from toll fescue (Festuca arundinacea Schreb.) into Italian ryegrass (Lolium multiflorum Lam,) was achieved using pentaploid hybrids between letraploid Italian ryegrass and hexaploid all fcscue and backcrossing twice to diploid Italian ryegrass, Good response to selection for improved drought tolerance was obtained in backcrossed progeny. It appears that in breeding for improved tolerance to environmental stress, there are advantages in introgressing a limited number of genes rather than combining complete genomes.
