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Meiotic behavior of a Male‐Fertile Triploid Arachis L. Hybrid 1
Author(s) -
Simpson C. E.,
Davis K. S.
Publication year - 1983
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/cropsci1983.0011183x002300030032x
Subject(s) - meiosis , biology , anaphase , telophase , pollen , arachis hypogaea , botany , mother cells , chromosome , genetics , gene
A triploid hybrid (2n = 30) from a cross between Arachis hypogaea L. (2n = 40) and F 1 hybrid (2n = 20) from A. cardenasii Krap. et Greg. nom. nud . and A. chacoensis Krap. et Greg. nom. nud . was male fertile, and produced up to 92% stained, uniform pollen grains. Meiotic analyses of the fertile triploid revealed that meiosis I was irregular, with the univalents lagging at anaphase and all 30 chromosomes were incorporated into one cell after anaphase I. Telophase I was not observed in these cells. Meiosis II resulted in dyad formation instead of tetrads. Normal appearing pollen grains were formed which transmitted 30 chromosomes to progeny produced from artificial cross pollinations with A. hypogaea