Abstract
Camu camu is a fruit native to the Amazon, that stands out for high content of vitamin C (3,133mg / 100 g of pulp). Is in process of domestication and therefore it is investigating a method of vegetative propagation to enable progress in the process of genetic improvement. The objective of this work was to determine the influence of genotype and grafting technique on the success and graft quality in camu camu plants. The trial was conducted using an experimental Randomized Complete Block design (RCB) with factorial scheme 9Ax3B, three blocks and 10 grafted plants per experimental unit. The factor A represented 9 clones of camu camu and factor B, three grafting techniques: Chip budding, b) Splice graft and c) Cleft graft. The experiment was conducted for 110 days to determine the sprouting time (beginning of the expansion of the first pair of leaves), the survival rate, sprout length and number of leaves. Significant interactions between the factors for the variables survival rate, sprout length and number of leaves were observed. The results show that the survival rate was influenced by the intrinsic effects of clone’s genotypic variability, presenting a high degree of dispersion, which was between 96.66% and 26.67%. With respect to grafting technique, the chip budding had higher response of survival rate, sprout length and number of leaves. Based on these results it is possible to conclude that the effect of genotypic variability and grafting method have influenced significantly on quantity and quality of camu camu grafting. The higher values of survival rate and vegetative vigour obtained allow recommending the use of chip budding technique for vegetative propagation of camu camu genotypes evaluated in this study.
Highlights
Twice winner of the Nobel Prize, Linus Pauling, revealed the existence of antioxidants and neutralizing action against destructive free radicals
The results show that the survival rate was influenced by the intrinsic effects of clone’s genotypic variability, presenting a high degree of dispersion, which was between 96.66% and 26.67%
The results show that camu camu presents variability and clones influence on the process of survival rate and initial growth of plants depending on the grafting techniques used
Summary
Twice winner of the Nobel Prize, Linus Pauling, revealed the existence of antioxidants and neutralizing action against destructive free radicals. Causing a body of degenerative diseases such as cancer, diabetes and arteriosclerosis (Pinedo et al, 2010) In this context, camu camu, a native fruit species of the Amazon, comes as a natural source of vitamin C, containing up to 3571 mg/100 gm of pulp, possessing antioxidants and minerals, considered a fruit with nutraceutical value. Camu camu is normally propagated by seed leading to large variation in fruit production, low and late fruiting, diminished fruit quality and varying vitamin C content between one plant and another (Salazar et al, 2012). It represents high genetic variability due to quantitative and qualitative hermaphrodite flower pollination. Asexual multiplication of selected clones may www.ccsenet.org/jas
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