Premium
Meiotic Irregularities in Hybrids Between Diverse Genotypes of Tall Fescue ( Festuca arundinacea , Schreb.) 1
Author(s) -
Evans G. M.,
Asay K. H.,
Jenkins R. G.
Publication year - 1973
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1973.0011183x001300030026x
Subject(s) - biology , festuca arundinacea , hybrid , meiosis , sterility , genotype , festuca , heterosis , chromosomal translocation , agronomy , botany , horticulture , genetics , poaceae , gene
Hybrids between American and North African Festuca arundinacea genotypes were characterized by numerous multivalents and univalents at first metaphase of meiosis and, consequently, were sterile. This was most likely due to differences in the arrangement of genetic material in the two parental groups. On the other hand, meiosis in progeny of crosses between American and European (French and Dutch) genotypes was much more regular with only one translocation evident. The sterility barrier imposed by the karyotypic divergence of American and North African genotypes seriously limits breeding efforts to combine desirable attributes of each. However, the relatively minor difference between European and American stocks should not impose any limitation on their inclusion in new synthetic varieties.