Call Prefix : PR-T

Call Suffix : 2001

Call Cutter : T - PlGe 1

Location : SEARCA Library

Format : TD

Publisher : University of the Philippines Los Banos (UPLB),

Publication Date : October 2001

Publication Place : College, Laguna, Philippines :

Summary : Ten accessions each of tall and dwarf coconut varieties, established at the Coconut Breeding Trial Unit (CBTU), Panay State Polytechnic College, Mambusao, Capiz, were characterized based on several morpho-physiological traits of the leaves. Gross morphological structure, stomatal features, epicuticular wax content, moisture content and transpiration rate of the leaves were assessed for their usefulness as important markers to differentiate between and among the tall and dwarf varieties. The dwarf varieties had generally reduced size than the Tall varieties. The leaf and rachis lengths were the only morphological features that provided distinct significant differences between the Tall and Dwarf varieties. Nevertheless, varieties with extreme values were identified among the Tall and Dwarf coconuts. Among the TAll varieties, KKT had the most number of distinguishing parameters namely : longest leaf and petiole lengths and smallest petiole width and thickness. Among the 20 varieties, ARO had the shortest leaf, leaflet, rachis and petiole lengths, smallest leaflet area and least petiole width and thickness. Statistical analysis revealed important differences for some of the Tall and dwarf varieties in terms of the physiological parameters examined. In general, wax and moisture contents, and transpiration rate could not also be utilized to classify the two coconut types.