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Species Compatibility in Subsection Euamoria of Trifolium 1
Author(s) -
Hovin Arne W.
Publication year - 1962
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/cropsci1962.0011183x000200060027x
Subject(s) - geneticist , library science , citation , pasture , biology , genealogy , ecology , history , computer science , genetics
The tetraploid (2n z 32) T. repens L. has been crossed successfully with the diploid (2n -16) T. n~grescens Viv.~ (2, 3) and with the tetraploid (2n 32) T. uniflorum L. (6). Keim (3) succeeded in obtaining vigorous hybrids between hexaploid (2n -48) T. ambJguum Bieb. and diploid (2n ---16) T. hybridum L. by the use of embryo-culture technique. Taxonomically unrelated clover species have not been hybridized successfully~,4 (7, 8). This paper reports on crossings between the diploid T. hybridum L., T. michelia~zum Savi, and T. nigrescens Viv. The author (2) found that hybrids were readily produced when certain accessions of T. nigrescens were used as pollen parents in crosses with accessions of T. repens. Accessions of these species were compared in attempts to overcome crossing barriers between diploid Trifolium and to elucidate species relationship in this agronomically important genus.