02159nab a2200289 i 4500003000900000005001700009008004100026040001800067072001400085100003900099100003400138100003000172100003300202100004100235245010000276500007000376520105300446650001101499650001201510650001901522650001101541650002001552773018901572856008101761942000801842999001901850BR-BrBNA20260407051358.0260407b2019    bl.qr|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aF02b1190  aZortéa, Kelli Évelin Müller   aRossi, Ana Aparecida Bandini   aBispo, Rosimeire Barboza   aRocha, Vinícius Delgado da  aHoogerheide, Eulalia Soler Sobreira   aMeiotic Behavior and Pollen Viability of Spondias mombin L.: Native Fruit Species of the Amazon  aPublicação on-line; 44 ref.; 3 tables; 2 illus.; Summary (En)  a

ABSTRACT

Spondias mombin L. is a fruit species native to the Amazon with great marketing potential.
The aim of this study was to examine the meiotic behavior and pollen viability of S. mombin.
Flower buds at various developmental stages were collected for analyses of pollen viability, in
vitro germination, and meiotic behavior. S. mombin is diploid with 2n = 2x = 30 chromosomes.
Meiosis showed to be regular, with only 13.3% of cells with abnormal division. A high meiotic
index was found: 96.5%. Pollen viability did not differ between male (96.3%) and bisexual
(96.7%) flowers, and the overall mean of viable pollen was considered high (96.5%). Pollen
germination occurred in all tested media, with the treatment containing 20% sucrose and 50 mg
mL‒1 boric acid being the most suitable. The highest pollen germination means occurred after
36 h of incubation. The obtained information can be used in the planning and implementation
of commercial crops of the species.

Keywords: cajá, pollen fertility, pollen germination, meiotic index.  aCAJÁ  aPÓLEN  aGERMINAÇÃO  aMEIOSE  aSPONDIAS MOMBIN0 029299347952dRio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994o2025-0451tFloresta e Ambiente (Brazil)x1415-0980  /  ISSN 2179-8087 0nlinegv. 26(3) p. 1-8; (2019)wBR2026000293  uhttps://www.scielo.br/j/floram/a/RVSNHcp5wYsg73sX7pFPRCq/?format=pdf&lang=en  cANA  c341256d341256