Name: JULIANY MOROSINI FRANÇA
Publication date: 28/06/2016
Advisor:
Name |
Role |
|---|---|
| RODRIGO SOBREIRA ALEXANDRE | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| EDILSON ROMAIS SCHMILDT | Co advisor * |
| JOÃO PAULO BESTETE DE OLIVEIRA | External Alternate * |
| RODRIGO SOBREIRA ALEXANDRE | Advisor * |
Summary: The genus Passiflora has high genetic diversity, yet the commercial plantations are
restricted to two species, which has featured a low resistance to major diseases of
passion fruit.In this context aimed to analyze the effect rhizogenic and gas exchange
in the genetic diversity of Passiflora mucronata Lam. treated or not with auxin,
assess the number of apical segments in commercial crops of Passiflora edulis Sims.
f. flavicarpa Deg. and test two methods of grafting between P. edulis f. flavicarpa and
P. mucronata through the use of fasteners. Among the wild species Passiflora
mucronata has agronomic characteristics relevant to the production clonal, the
resistance to bacterial blight on leaves, anthracnose in fruits and branches and
fusarium. In this scenario we developed two experiments: the first one is the
assessment of diversity and rhizogenic force of P. mucronata genotypes treated or
not with auxin.The design was randomized blocks in a factorial 9x2 [genotype 1; 2; 3;
4; 5; 6; 7; 8 and 9 x auxin (IBA - indole-3-butyric acid): absence and presence (1000
mg kg-1)] with four replicates of 16 poles. The root characteristics evaluated were
emergency; emergency speed index, average time of emergency, root dry weight,
nevertheless evaluated dry mass of shoots, net photosynthesis, stomatal conductance, internal carbon, sweating. The second objective was to evaluate
grafting between P. edulis f. flavicarpa and P. mucronata. The experimental design
was a randomized block, 3x2 factorial [grafting mode: grafting and encostia x
fasteners: parafilme® micropore® and thread sealing®], with four replicates of twelve
grafts. The characteristics evaluated were the number of apical segments in
commercial fields and percentage of fruit set. Data were submitted to analysis of
variance and the averages of the different types of cuttings were compared by Tukey
test and phenotypic correlation. Genetic diversity has been studied according to the
Tocher grouping method based on the Mahalanobis distance (D2ii') and canonical
variables. Considering the variables analyzed, indicated the use of acid-indole-3-
butyric acid, the stakes in concentration de1000 mg kg-1. Due to increased rhizogenic
force percentage, net photosynthetic rate, root and shoot dry weight in some
genotypes when compared to the absence of auxin. Genetic diversity has allowed
the formation of three groups. The morphological and physiological variables of
contribution to the genetic divergence in the absence and presence of IBA, were, in
the absence, IVER (38.75) and (20.27%) and MSRA (15.87 g) and in the presence,
gs (23.19 mol m-2 s-1), SARM (20.91 g) and DMAP (19.66 g). Commercial crops of P.
edulis f. flavicarpa can contribute significantly in minigarfagem, by producing apical
segments, without prejudice to the mother plant. The treatments represented by
grafting methods (minigarfagem and encostia) and fasteners (parafilme®, micropore®
and thread sealing®) showed an average of 94.90%, indicating huge compatibility
between independent species studied the grafting method and fasteners in the union
P. edulis f. flavicarpa x P. mucronata. It is indicated the parafilm® fastener for
convenience and ease of handling, recommended to the two grafting methods.
