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Genetic Variability of Pumpkin Landraces in Brazilian Amazon

Agricultural Sciences 2016年第12期7卷 822-833页

作者： Lúcia Helena Pinheiro Martins Hiroshi Noda maria Teresa Gomes Lopes maria silvesnizia paiva mendonça Ayrton Luiz Urizzi Martins Núcleo de Etnoecologia da AmazÔ nia (NETNO) Universidade Federal do Amazonas Manaus Brazil Instituto Nacional de Pesquisas da AmazÔ nia (INPA) Manaus Brazil Faculdade de Ciências Agrárias (FCA) Universidade Federal do Amazonas Manaus Brazil

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.

关键词： Amazon Agriculture Crop Genetic Variability Cucurbita maxima Duchesne Genetic Resource Local Cultivars

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