Banca de DEFESA: MARIA DE FÁTIMA BATISTA DUTRA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : MARIA DE FÁTIMA BATISTA DUTRA
DATE: 25/08/2021
TIME: 14:30
LOCAL: Videoconferência
TITLE:

BIOTECHNOLOGY AS AN INSTRUMENT OF SOCIAL AND ENVIRONMENTAL DEVELOPMENT APPLIED TO CACTUS PEAR

KEY WORDS:

Biotechnology; Cactus Pear; Propagation; Family farming.

PAGES: 160
BIG AREA: Outra
AREA: Ciências Ambientais
SUMMARY:

In the semi-arid region of Brazilian North-east, the oscillation of rainfalls have influenced to the systems of exploration from small farmers to do not achieve acceptable results, generating severe consequences on the condition of income, and, consequently of these farmers’ live, the northeastern population that did not have found the synchronism between traditional culture and imperatives of the environment yet. A relevant fact of this region is the cacti in the semi-arid ambience present extremal importance to sustainability of caatinga biome, assisting as fountain of fodder and food to animals, especially in severe drought season with focus on cactus pear. One of the hardest difficulties to the development of cactus pear culture is the limited availability of cultivable material, being highly slow the conventional propagation system. Therefore, biotechnology is a tool with a huge importance to provide benefits to different sectors of society, especially farming, for this reason the micropropagation has been used successfully to different species, looking for an efficient multiplication system for these cacti. Thus, the general purpose of this work was to investigate through biotechnology, a fast and efficient method of investigation to cactus pear tolerant to carmine cochineal to be used in the north-east semi-arid, contributing to improve the agricultural and economic potential of the Rio Grande do Norte and consequently coexistence with the semi-arid. In this way, this search quested to develop to micropropagation protocol with two cactus pear varieties, “Miúda” and “Mexican Elefant Ear”, compared to in vitro development pattern and made acclimatization in greenhouse, pointing tolerant materials to Cochineal Carmine favourable to being cultivated in this region. In the last chapter, throughout the application of questionnaires to the familiar farmers, It was identified the socio-economic profile of who cultivates cactus pear of varieties of this research of some municipalities in the Rio Grande do Norte. Succinctly, after 120 days of in vitro cultivation it was recognized that the applied methodology has the potential to increment the yield of genetic material multiplication with a high value to the cactus culture, the two explored selections are promising and showed a great adaptation in the acclimatization stage. The farmers socio-economic profile was characterized for show some relevant particularities in municipalities of the Rio Grande do Norte such as the predominance of male sex, creation of subsistence, low degree of instruction, plantation in the conventional system of cultivation and lack of pest control. The relevant information to the culture of cactus pear reported in this work demonstrates its potential however there are several elucidations about its utility and applications that should be investigated.

BANKING MEMBERS:
Externo à Instituição - JOSEMIR MOURA MAIA - UEPB
Externo à Instituição - JOSÉ ARAÚJO DANTAS - EMPARN
Interna - 350500 - MARIA DE FATIMA FREIRE DE MELO XIMENES
Externo à Instituição - NATONIEL FRANKLIN DE MELO - EMBRAPA
Externo ao Programa - 2257836 - PAULO SERGIO MARINHO LUCIO