Abstract
<p><em>Coffea canephora</em> ‘Apoatã’ seeds are used for the formation of rootstocks for grafting of <em>C. arabica</em> seedlings. The quality of seeds and the individualization of used genotypes are prevalent factors for the formation of vigorous rootstocks that will enhance the formation of quality seedlings. The aim of the present study was to characterize and evaluate the seed quality of <em>C. canephora</em> ‘Apoatã’ genotypes for potential use of rootstocks for <em>C. arabica</em> species. Were used seeds of 30 <em>C. canephora</em> ‘Apoatã’ genotypes, obtained from the experimental field of Embrapa Rondônia in Ouro Preto do Oeste, RO, Brazil. The seeds were processed and subjected to germination, first germination count and tetrazolium tests. Moisture, 100- seed mass and chemical composition analyses of seeds were also determined. The mass, physiological quality and chemical composition of <em>C. canephora</em> ‘Apoatã’ seeds vary according to the genotype. The variation of the physiological quality of <em>C. canephora</em> ‘Apoatã’ seeds is not related individually to caffeine, total sugars, ash, ether extract, crude fiber protein and chlorogenic acid. Seed batches of <em>C. canephora</em> ‘Apoatã’ from different genotypes contain seeds of different sizes, being indicated the classification before the processing stage in order to prevent mechanical damages.</p>
Highlights
Coffea arabica L. species shows more than 90% of self-fertilization and is considered as autogamous, being very uniform, reason why its cultivars are propagated by seeds
Despite the mentioned benefits, the rootstock can negatively influence the development of plants (PAIVA et al, 2012; TOMAZ et al, 2005) due to the incompatibility that can occur among some used genotypes
The C. canephora genotypes presented different seed mass, being grouped into 13 size classes ranging from 10.34 g to 22.85 g (Table 1)
Summary
Coffea arabica L. species shows more than 90% of self-fertilization and is considered as autogamous, being very uniform, reason why its cultivars are propagated by seeds. Besides the possibility of nematode attack control, the use of rootstocks can improve plant vigor, increase fruit yield, nutrient use efficiency, adaptation to soil conditions and areas with limited rainfall, since some rootstocks have a more developed root system (TOMAZ et al, 2005). Despite the mentioned benefits, the rootstock can negatively influence the development of plants (PAIVA et al, 2012; TOMAZ et al, 2005) due to the incompatibility that can occur among some used genotypes. The ‘Apoatã’ is the most commonly C. canephora cultivar used as rootstock for C. arabica cultivars (PAIVA et al, 2012) due to reports of resistance to nematodes from this cultivar (FERREIRA et al, 2011; SANTOS et al, 2017). The C. canephora species is Coffee Science, Lavras, v. 13, n. 1, p. 1 - 8, jan./mar. 2018
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
