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Prospects of polyploidizing cassava, Manihot esculenta Crantz, by unreduced microspores
Author(s) -
Nassar N.M. A.,
Freitas M.
Publication year - 1997
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1997.tb02179.x
Subject(s) - manihot esculenta , biology , microspore , botany , manihot , agronomy , horticulture , pollen , stamen
Eleven interspecific hybrids of cassava with the wild relatives Manihot glaziovii, M. pseudoglaziovii. M. dichotoma and M. anomala were examined to detect unreduced microspores. The frequency of dyads and triads was counted, as well as pollen viability. Of these hybrids, the second generation progeny of cassava×M. glaziovii showed a high frequency of unreduced microspores (3.7%) permitting their selection for further manipulation of this character. An association of vegetatively‐reproduced genotypes and the occurrence of unreduced microspores has also been observed.