&lt;b&gt;Characterization of blueberry cultivar ‘climax’

Marjana Radunz,Francisco Wilson Reichert Junior,Lucas Celestino Scheunemann,Daiane Pinheiro Kröning,Vanessa Neumann Silva,Flavio Gilberto Herter,André Luiz Radünz

doi:10.4025/actascibiolsci.v40i1.40472

<b>Characterization of blueberry cultivar ‘climax’

Marjana Radunz, Francisco Wilson Reichert Junior + Show 5 more

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https://doi.org/10.4025/actascibiolsci.v40i1.40472

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Abstract

The objective of this work was to characterize the blueberry ( Vaccinium spp.) cultivar Climax, Rabbiteye group ( Vaccinium ashei Reade). In order to achieve that, a survey with blueberry plants (cultivar Climax), in full production, was conducted during the 2012/13 and 2013/14 seasons in the mesoregion of Pelotas, Rio Grande do Sul State, Brazil. Data regarding the distribution of flower and vegetative buds on branches of two lengths (long and short) was collected. Another evaluation, considering three positions of flower buds in the branch (apical, medial and basal), the number of flower primordia, open flowers and fruits formed was performed. Data were subject to ANOVA and, when significant, the averages were compared using either the F or Tukey’s HSD test (p ≤ 0.05). The results demonstrate the presence of flower buds intercalated with vegetative ones. The total number of flower and vegetative buds, flower primordia, flowers and fruits was influenced by the length of the branch. Likewise, the position of the bud on the branch affected the results, with a greater number of flower primordia on the basal, a greater number of flowers on the medial and a greater number of fruits on the apical portions of the branches.

Highlights

Due to its growing characteristics and considering the economic and social aspects, the blueberry (Vaccinium spp.), Family Ericaceae, subfamily Vaccinioideae (Peña, Gubert, Tagliani, Bueno, & Biasi, 2012), is presented as an alternative to compose the productive matrices of family units (Radünz et al, 2014)
This research was performed in two consecutive seasons, 2012/2013 and 2013/2014, in a commercial grove located in the city of Morro Redondo, Rio Grande do Sul State (31o 32' S 52o 34' W, 150 m), in which full production eight-year-old blueberry plants of the cultivar ‘Climax’, group Rabbiteye (Vaccinium ashei Reade) were selected
As for the evaluation of the number of flower primordia, it was decided to carry out collection of branches in five (5) different dates that corresponded from the senescence of leaves to the beginning of the flower openning, corresponding to assessments made between April and August of each harvest season

Summary

Introduction

Due to its growing characteristics and considering the economic and social aspects, the blueberry (Vaccinium spp.), Family Ericaceae, subfamily Vaccinioideae (Peña, Gubert, Tagliani, Bueno, & Biasi, 2012), is presented as an alternative to compose the productive matrices of family units (Radünz et al, 2014). The main characteristic of this group is the low chill requirement, obtaining good budding and flowering with only 360 hours of cold, a condition that is found in many cities in southern Brazil (Radünz et al, 2016). In this context, Fachinello, Pasa, Schmtiz, and Betemps (2011), to obtain high quality fruit in. For the same growing number of flower buds, flowers and fruits may vary, depending on the local climatic conditions

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