Open AccessCytogenetic study and pollen viability of <i>Diatenopteryx sorbifolia</i> Radlk.
Author(s) -
Marciele Filippi,
Kellen Regina Boldrini,
Karoline Fontana Agostinho,
Bruno Jan Schramm Corrêa,
Joel Donazzolo
Publication year - 2022
Publication title -
ciência florestal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.381
H-Index - 21
eISSN - 1980-5098
pISSN - 0103-9954
DOI - 10.5902/1980509848072
Subject(s) - pollen , germplasm , ploidy , meiosis , biology , botany , brood , genetics , gene
The number of chromosomes and the meiotic characterization are important to studies involving genetic variability, germplasm and biodiversity. However, native forest species have not been sufficiently analyzed from a cytotaxonomic point of view. Therefore, the number of chromosomes, the meiotic behavior and the pollen viability of the Diatenopteryx sorbifolia Radlk were determined from five different accessions located in the southern region of Brazil. The species was considered diploid, 2n = 30 (x = 15), with regular meiotic behavior in phase I and absent in phase II, suggesting the presence of a genetic abnormality. Pollen grains infertility was between 57 and 67%. which may be associated to the formation of a low number of seeds in Diatenopteryx sorbifolia, probably due to the irregular behavior of the microsporogenesis.