Segregation for Sexual Seed Production in Paspalum as Directed by Male Gametes of Apomictic Triploid Plants | Zendy

Eric J. Martínez | Zendy; Carlos A. Acuña | Zendy; Diego Hojsgaard | Zendy; Mauricio Alfredo Tcach | Zendy; Camilo L. Quarín | Zendy

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Segregation for Sexual Seed Production in Paspalum as Directed by Male Gametes of Apomictic Triploid Plants

Author(s) -

Eric J. Martínez,

Carlos A. Acuña,

Diego Hojsgaard,

Mauricio Alfredo Tcach,

Camilo L. Quarín

Publication year - 2007

Publication title -

annals of botany

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.567

H-Index - 176

eISSN - 1095-8290

pISSN - 0305-7364

DOI - 10.1093/aob/mcm201

Subject(s) - apomixis , ploidy , biology , polyploid , paspalum , meiosis , gamete , genetics , chromosome , zygote , sexual reproduction , parthenogenesis , botany , embryo , human fertilization , gene , embryogenesis

Gametophytic apomixis is regularly associated with polyploidy. It has been hypothesized that apomixis is not present in diploid plants because of a pleiotropic lethal effect associated with monoploid gametes. Rare apomictic triploid plants for Paspalum notatum and P. simplex, which usually have sexual diploid and apomictic tetraploid races, were acquired. These triploids normally produce male gametes through meiosis with a range of chromosome numbers from monoploid (n = 10) to diploid (n = 20). The patterns of apomixis transmission in Paspalum were investigated in relation to the ploidy levels of gametes.

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