Characterization of the tree length structure of the Nectarine tree before flowering by metric measurements in Sefrou, Morocco

Abstract

This study aims to describe the architecture of Nectarine fruit trees located in Sefrou region. This characterization concerned the length variation of all the tree structure before flowering by metric exhaustive and non-destructive measurements. The study conducted on Nectarine variety of Spring Bright, by measuring 10 trunk, 40 frames, 157 1 st underframe, 280 2 nd underframe, 361 3 rd underframe, 308 4 th underframe, 134 5 th underframe and 1250 of mixed branches, that have been labelled and numbered. The characterization of the tree revealed the underlying logic of the plant’s construction, The lengths, decrease from scaffold to 5 th level under frame but it experiences a 357% increase in length ratio for the mixed branch due to its role as the primary fructification structure. This type of distribution is logic for the goblet training pruning program. The mean number of structure evolution was (scaffold) 4/(1 st level) 4/(2 nd level)1/3 rd level 2/(mixt branch) 9 . The raw length data was not homogeneous probably due to the pruning effect, so they were grouped in three to four class to enhance the homogeneity.