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Alfalfa Triploids with Functional Male and Female Fertility 1
Author(s) -
Blake N. K.,
Bingham E. T.
Publication year - 1986
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/cropsci1986.0011183x002600030048x
Subject(s) - biology , pollen , ploidy , medicago , botany , genetics , gene
Alfalfa ( Medicago saliva L.) triploids (2 n =3 x = 24) were produced by crossing tetraploid cultivated alfalfa with cultivated alfalfa at the diploid level (CADL) derived by haploidy. Alfalfa triploids usually function only as seed parents in crosses; however, eight of nine triploids in this study functioned as the pollen parent in 3 x ‐3 x , 4 x ‐3 x , or 6 x ‐3 x crosses. Moreover, two triploids produced self‐progeny. In 3x‐3x crosses, most progeny had 31 or 32 chromosomes, but progeny with 29,35,45,46,47,48, and 58 chromosomes were also produced. Triploid self‐progeny had 31, 32, 36, 45, 46, 47, 48, and 52 chromosomes. Several hexaploids (2 n =48) and near hexaploids (2 n =45‐52) were produced by sexual polyploidy in 3 x self, 3 x ‐3 x , 3 x ‐6 x , and 6 x ‐3 x matings.