Methods for Assessing Pollen Viability in Eggplant under High Temperatures | Chapter 9 | Advances and Trends in Agricultural Sciences Vol. 4

In Northeastern Brazil, eggplant production is drastically reduced, especially when the high temperatures during flowering and fruiting of the eggplant for a prolonged period, makes pollen grains unfeasible, prevents full fertilization, results in defective fruits, reduces the fruit fixation rate, number of fruits and yield per plant. In this regard, the assessment of pollen viability under such conditions becomes of fundamental importance and can be used as an auxiliary trait in the selection processes of tolerant genotypes. This book chapter addresses the aspects to be considered when choosing and implementing the pollen viability assessment methodologies currently described for use on eggplants grown under high temperatures and their associations with the traits known to influence: fruit fixation rate, number of fruits and production per plant. There is no universal methodology for use in eggplant; but, under high temperatures the use of Carmine Acetic, Alexander stain and the germination of pollen grains in vitro proved to be efficient and with a high and positive genetic correlation with the traits associated with tolerance; they are easy to perform and inexpensive for pollens extracted from flowers in the field or greenhouse

Author (s) Details

Prof. Dr. Ricardo de Normandes Valadares
Agrarian and Environmental Sciences Center, Federal University of Maranhão (UFMA), Chapadinha, MA, Brazil

Lilian Bonfim de Lima
Department of Agronomy, Federal Rural University of Pernambuco (UFRPE), Recife, PE, Brazil.

Danieli Andrade Nóbrega
Department of Agronomy, Federal Rural University of Pernambuco (UFRPE), Recife, PE, Brazil.

Jordana Antônia dos Santos Silva
Department of Agronomy, Federal Rural University of Pernambuco (UFRPE), Recife, PE, Brazil.

Prof. Dr. Adônis Queiroz Mendes
Department of Agriculture, Federal Institute of Pernambuco (IFPE), Vitória de Santo Antão, Brazil

View Book :- http://bp.bookpi.org/index.php/bpi/catalog/book/168

Eggplant High Temperature Tolerance: A Brief Review | Chapter 8 | Advances and Trends in Agricultural Sciences Vol. 4

In Northeastern Brazil, eggplant production is drastically reduced, especially when the flowering and fruiting season coincide with the high temperatures. Therefore, it is necessary that strategies for genotype evaluation and selection in the face of high temperatures should be adopted in field, screen mesh and/or greenhouse tests, based on traits associated with high temperature tolerance, aiming to obtain genotypes adapted to regions where high temperature is the limiting factor. This book chapter provides information on selection based on morphological traits associated with high temperature tolerance: FFI - fruit fixation index, NFP - number of fruits per plant, PP - production per plant and PV - pollen viability, evaluated in genotypes of eggplant in field and greenhouse tests under natural high temperature conditions in Northeastern Brazil, aiming to generate information for future eggplant breeding programs for high temperature tolerance

Author(s) Details
Dr. Ricardo de Normandes Valadares 
Agrarian and Environmental Sciences Center, Federal University of Maranhão (UFMA), Chapadinha, MA, Brazil.

Danieli Andrade Nóbrega
Department of Agronomy, Federal Rural University of Pernambuco (UFRPE), Recife, PE, Brazil.

Jordana Antônia dos Santos Silva
Department of Agronomy, Federal Rural University of Pernambuco (UFRPE), Recife, PE, Brazil.

Dr. Adônis Queiroz Mendes
Department of Agriculture, Federal Institute of Pernambuco (IFPE), Vitória de Santo Antão, Brazil.

Fabian Santana Silva
Department of Agronomy, Federal Rural University of Pernambuco (UFRPE), Recife, PE, Brazil.

Ítalo Jhonny Nunes Costa
Department of Agronomy, Federal Rural University of Pernambuco (UFRPE), Recife, PE, Brazil.

Dr. Dimas Menezes 
Department of Agronomy, Federal Rural University of Pernambuco (UFRPE), Recife, PE, Brazil

View Book :- http://bp.bookpi.org/index.php/bpi/catalog/book/168