Genetic Variability of Pumpkin Landraces in Brazilian Amazon
- 1 Núcleo de Etnoecologia da AmazÔnia (NETNO), Universidade Federal do Amazonas, Manaus, Brazil
- 2 Instituto Nacional de Pesquisas da AmazÔnia (INPA), Manaus, Brazil
- 3 Faculdade de Ciências Agrárias (FCA), Universidade Federal do Amazonas, Manaus, Brazil
- 4 Núcleo de Etnoecologia da AmazÔnia (NETNO), Universidade Federal do Amazonas, Manaus, Brazil
- 5 Faculdade de Ciências Agrárias (FCA), Universidade Federal do Amazonas, Manaus, Brazil
Abstract
The family farm of the Upper Solim?es region has maintained the great genetic variability of the pumpkin ( Cucurbita maxima Duchesne) by the in situ conservation of the landraces which are widely used as human food. The aim of this study was to estimate the current level of genetic variability of pumpkin landraces by means of estimation techniques of genetic parameters. Landraces areas samples were the family farming production units located in floodplains ecosystems of Benjamin Constant (Upper Solim?es River) and Iranduba (Lower Solim?es River), Amazonas. The split-plot designs were adopted at the treatments where the main plots were the five pumpkin landraces and one commercial cultivar. Each landrace was obtained six half sib families distributed in the sub-plots. Among the results of this study, it can be concluded that the genetic variation within the each landrace is greater than the genetic variation among the landraces. The qualitative morphological characteristics bring together half-sib families collected in geographically distant locations. It can be concluded that, through the estimation of genetic parameters, there is genetic variability among local cultivars collected in family farming of Benjamin Constant and Iranduba, Amazonas.
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