Stability of fruit and bunch of mapanget tall and Indonesia coconut hybrid with several planting distance using AMMI model and GGE biplot analysis

Abstract

Abstract Coconut plantations with new system of planting distance allow wider use of distance under the coconut than the conventional planting distance. Evaluation stability ofMapanget coconut (DMT) and KHINA hybrid coconut at various planting distance systems can be used as a recommendation for the development of coconuts with new planting distance in the most suitable environmental conditions. The purpose of this study was to determine the stability of the yields of DMT and KHINA grown with various distance models for five years observation. The experiment was arranged in a factorial experiment design consistsof 8 treatments with 2 replications, in the Mapanget Experimental Garden, North Minahasa Regency, North Sulawesi Province, for 5 years from 2014 to 2018. The results showed that the combined analysis variance was significantly different (F < 0.05) both GXE interaction for the number of fruits, while the character number of bunches is not different. The results of AMMI Biplot showed that Khina coconut with the most stable distance of 9 x 9 m followed by Khina coconut with a distance of 5x16 for land use under coconut plants with intercropping suggested using a distance of 5x16 m.