Physical and Chemical Characterization of Fruits and Dna Content in Genotypes of Acerola Tree

Abstract

The present study investigated agronomic characteristics of nine genotypes of acerola tree, as well as determined the DNA content of these plants. Sixty fruits from each genotype were harvested at physiological maturity and evaluated in relation to physical and physical-chemical characteristics. The data were submitted to descriptive and multivariate analyses. The characteristics of genotypes were clustered according to the dissimilarity, using the Hierarchical Method of Nearest Neighbor and the Tocher Optimization Method. The results revealed differences between the genotypes, and separated them into four groups. The analysis of DNA content was performed by the genotypes flow cytometry. Three samples of each genotype along with the internal reference standard (pea) were prepared and then 10.000 cores on a logarithmic scale were analyzed. The genotypes tested, in relation to the DNA content, can be separated into two groups. Finally, it was concluded that there is little correlation between citometry and characterization of acerola fruits.

Paclobutrazol in the flowering management affects the quality of Malpighia emarginata fruits

“…For the SS/TA ratio (Table 2), there was an increase of 1.24 for 'Flor Branca', when compared to 'Junko', justified by the higher soluble solids content and lower titratable acidity of 'Flor Branca', despite the non-significant difference for soluble solids and titratable acidity when evaluated separately. Menezes et al (2018), studying the physical and chemical characterization of M. emarginata genotypes, observed values from 3.48 to 7.22, a range that includes the results in the present study. In contrast, Corrêa et al (2017) obtained a 10.73 ratio in fruits of M. emarginata cv.…”

“…Regarding the longitudinal diameter, 'Junko' was also superior, with a result 2.92 mm higher than for 'Flor Branca' (Table 2). Menezes et al (2018), evaluating nine different M. emarginata genotypes, observed measurements of transverse and longitudinal diameters ranging from 19.33 mm to 24.67 mm and from 17.51 mm to 21.25 mm, respectively, ranges that include the results obtained for the two cultivars evaluated in this study.…”