Comparison of Leaf Emission in Three Periods of Time in Sugarcane
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Abstract
The leaves of the plants develop normally under very regular patterns in time and space. The spatial pattern of the arrangement of the leaves is called phyllotaxy, and the temporal pattern is determined by the plastocron, both are important to define the architecture of the plantation. The present work was carried out with the objective of studying the elements that could characterize the emission of leaves in sugar cane, to achieve this an experiment with six cultivars was carried out: C86-12,C86-56, C323-68, C1051-73, C90-469 and CP52-43in areas of the Artemisa Mayabeque Sugar Cane Territorial Station. The study was performed by marking the leaf +1 in three moments of the plantation life. The time it took for the marked leaf to dry, the position it acquired weekly, the number of leaves emitted during this time and the degree days of development were evaluated. The period between May 17 and July 17 led to a linear behavior of the number of fully expanded leaves with time (7 days) and degree days (100-1270 C) with an r = 0.999 for all cultivars, defining in this way, the plastocron and phyllocron of cultivars, respectively
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