Document Type : Original Research Articles.
Authors
1
Agronomy Department, Faculty of Agriculture, Assiut University, Egypt
2
Sugar Crops Research Institute, ARC, Giza
3
Egyptian Sugar and Integrated Industries Company, Egypt
Abstract
The present study was carried out in a private farm in El-Shaghap Region, South Esna of Luxor Governorate, Egypt (latitude of 25.30°N and longitude of 32.30°E). The work was conducted during the two plant-crop seasons of 2017/2018 and 2018/2019 to study the sugarcane planting using bud chips and conventional methods. Four sugarcane varieties G.T.54-9, G.84-47, G.2003-47 and C.57-14 were tested in this study. The experimental design was a split plot design with four replications. The four varieties were randomly distributed to the main plots and the two planting methods (conventional method and bud chips) assigned as sub-plot (42 m2). Each plot contains six rows with the length of seven meters/row and one meter of row width.
The results indicated that unique and high positive estimates of correlation coefficients were recorded between seeding survival % and each of millable cane length, millable cane weight, cane yield/ fed, brix, sucrose content, purity %, sugar recovery %, pol and sugar yield/fed across bud chips planting method. Otherwise, the previous results were not found for conventional planting method, reflecting the remarkable effect of bud chips planting method on correlation coefficients corresponding to the seeding survival produced using that method. Brix recorded high and positive correlation with each of sucrose %, purity %, sugar recovery %, pol % and sugar yield/ fed across both planting methods. It is remarkable results that the correlation coefficients between each of sucrose %, purity %, sugar recovery % and pol % were equal or close to unity, reflecting the very strong genetic make-up of those traits. Regression analysis revealed that the predictors traits, i.e., sugar yield/fed., millable cane diameter, millable cane length, seedling survival%, millable cane weight and number of millable cane/fed. could be used as powerful selection criteria for high cane yield/fed. Moreover, the predictors traits, i.e., cane yield/fed, stalk length elongation, millable cane length, millable cane diameter, number of millable cane/fed, stalk survival%, pol%, brix% and sucrose% could be used as powerful selection criteria for high sugar yield/fed.
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