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The Persistence of Tetraploid Perennial Ryegrass in a Mixture with Diploid Perennial Ryegrass
Author(s) -
Roegiers P.,
Reheul D.,
Bogaert G.
Publication year - 1988
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1988.tb00641.x
Subject(s) - perennial plant , lolium perenne , biology , ploidy , agronomy , poaceae , botany , biochemistry , gene
An investigation was carried out into the survival of two tetraploid varieties of perennial ryegrass ( Lolium perenne L.), sown in a mixture with a diploid and very intensively grazed for over five years. Mixture M1 consisted of the late heading varieties Meltra and Vigor , and mixture M2 of the early heading varieties Merlinda and Melino. The ploidy was determined by microscopic analysis. The share of the tetraploid component decreased in both mixtures. The decrease was more pronounced in the early heading mixture. Information was also sought on the technique of sampling such swards.