Zortéa, Kelli Évelin Müller  Rossi, Ana Aparecida Bandini  Bispo, Rosimeire Barboza  Rocha, Vinícius Delgado da Hoogerheide, Eulalia Soler Sobreira  <br/><br/>
Meiotic Behavior and Pollen Viability of Spondias mombin L.: Native Fruit Species of the Amazon 

<br/><br/> Publicação on-line; 44 ref.; 3 tables; 2 illus.; Summary (En) 
<br/><br/> <br/><br/>ABSTRACT<br/><br/>Spondias mombin L. is a fruit species native to the Amazon with great marketing potential.<br/>The aim of this study was to examine the meiotic behavior and pollen viability of S. mombin.<br/>Flower buds at various developmental stages were collected for analyses of pollen viability, in<br/>vitro germination, and meiotic behavior. S. mombin is diploid with 2n = 2x = 30 chromosomes.<br/>Meiosis showed to be regular, with only 13.3% of cells with abnormal division. A high meiotic<br/>index was found: 96.5%. Pollen viability did not differ between male (96.3%) and bisexual<br/>(96.7%) flowers, and the overall mean of viable pollen was considered high (96.5%). Pollen<br/>germination occurred in all tested media, with the treatment containing 20% sucrose and 50 mg<br/>mL‒1 boric acid being the most suitable. The highest pollen germination means occurred after<br/>36 h of incubation. The obtained information can be used in the planning and implementation<br/>of commercial crops of the species.<br/><br/>Keywords: cajá, pollen fertility, pollen germination, meiotic index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CAJÁ<br/>PÓLEN<br/>GERMINAÇÃO<br/>MEIOSE<br/>SPONDIAS MOMBIN