Name: JEANE CRASQUE
Publication date: 28/02/2020
Advisor:
Name |
Role |
|---|---|
| SARA DOUSSEAU ARANTES | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| ANDREIA BARCELOS PASSOS LIMA GONTIJO | Internal Examiner * |
| EDILSON ROMAIS SCHMILDT | Co advisor * |
| SARA DOUSSEAU ARANTES | Advisor * |
Summary: CRASQUE, Jeane; M.Sc.; Universidade Federal do Espírito Santo; February 2020;
Characterization of the compatibility of black pepper grafted on species of the
genus Piper; Advisor: Sara Dousseau Arantes; Co-advisers: Edilson Romais
Schmildt and José Altino Machado Filho.
In the black pepper culture, Brazilian productivity is restricted by several biotic and
abiotic factors, highlighting the incidence of the fungus Fusarium solani f. sp. Piperis,
since the existing chemical management techniques are not very efficient. Among
the strategies, the practice of grafting black pepper cultivars into wild species has
proved to be efficient and sustainable, however, the success of this technique
depends on the compatibility between the graft and rootstock. Thus, the objective of
this study was to evaluate the efficiency of grafting using various rootstocks and to
identify morphophysiological descriptors related to incompatibility. Fusarium species
resistant to Piper species were studied using two grafting techniques. In the lateral
fork, three native species of the genus Piper (Piper aduncum L., Piper hispidum Sw.
And Piper tuberculatum Jacq.) And the cultivar BRS Kottanadan were evaluated as
rootstocks. In the top fork experiment, three native species of the genus Piper (Piper
arboreum Aubl., P. aduncum and P. tuberculatum) and ´Bankankotta` were
evaluated as rootstocks, and as a graft from both trials, cultivar was used Bragantina.
The first chapter was entitled Chlorophyll a fluorescence for assessing the efficiency
of grafting of black pepper (Piper nigrum L.) under intra and interspecific rootstocks
and the second, entitled Primary metabolism and its relationship with development
of grafted seedlings of black pepper . When the photosynthetic apparatus was
analyzed using the chlorophyll a fluorescence method, grafting under wild species
was better in both grafting methods with a higher performance index of
photosynthetic efficiency. The recommended method, at the production level, is the
grafting of the side fork in a full slit. It can be concluded that grafting is a viable
strategy for mitigating biotic and abiotic factors. As for chapter two, characteristics
related to vegetative development, gas exchange, photosynthetic pigments,
carbohydrate allocation were evaluated. P. tuberculatum showed initial
incompatibility. The analysis of survival over time and the parameters related to the
photosynthetic capacity of the graft and seedling quality indicated that there was no
incompatibility between ´Bragantina` and the rootstocks P. aduncum, P. hispidum
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and ´Kottanadan`. However, the species P. hispidum and ´Kottanadan` showed
greater limitation in union due to difference in diameter. In the study of correlations, it
was possible to observe a decrease in investment in aerial parts, contributing to the
increase in water use efficiency. The content of AR and AST of the stem above the
graft region allowed greater accumulation of dry mass in this region. The species with
the highest photosynthetic performance and carbohydrate allocation was P.
aduncum.
Key words: graft, black pepper, wild pepper
