Meiotic Behavior and Pollen Viability of Spondias mombin L.: Native Fruit Species of the Amazon
Material type:
ArticleSubject(s): Online resources:
In:
Floresta e Ambiente (Brazil) v. 26(3) p. 1-8; (2019)Summary:
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.
| Item type | Current library | Collection | Call number | Vol info | Status | Date due | Barcode |
|---|---|---|---|---|---|---|---|
Periódicos
|
Biblioteca Nacional de Agricultura - Binagri Agrobase - Periódicos | Periódicos agrícolas | 2019 26(3) | Online | 2025-0451 |
Publicação on-line; 44 ref.; 3 tables; 2 illus.; Summary (En)
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.
BINAGRI