Indonesian

Abstract

Yunita TR, Taryono, Suyadi MW. 2015. Examination of cross-pollination compatibility on five clones cacao (Theobroma cacao). Pros Sem Nas Masy Biodiv Indon 1: 1182-1185. Most of the cacao are cross-pollinated due to self-incompatibility and possibly also the ability to pollinate against another clone. This deficiency is seemed to be the cause of the low number of fruit set, harvested pod and seed number per pod. Selection of paternal and maternal parent are important for cultivating cross-pollinated plant. The aim of this research was to examine the compatibility of five cross-pollinated clones cocoa at Production Units Samigaluh PT. Pagilaran Pagerharjo, Samigaluh, District of Kulon Progo, Yogyakarta. They were KKM4, RB, RCC70, RCC72, and RCC73. This research used full diallel matting design by comparing the percentage of fruit set and number of seed from all matting combination. All of the clones are selfincompatibility and they are some compatibility on cross pollination. RB, RCC70, and RCC7 are capable of doing cross-pollination with KKM4 as paternal parent. RB as paternal parent is cross compatible to KKM4, RCC70, and RCC73. Maternal parent from KKM4, RCC70, and RCC73 are cross compatible with RCC70. KKM4, RB, RCC70, and RCC73 are cross compatible with donor pollen from RCC72, and donor pollen from RCC73 is compatible for doing cross-pollination with KKM4, RB, RCC70, and RCC72. From this study, it can be concluded that the development of commercial polyclonal cocoa plantation, the election of constituent clones in the polyclonal garden are essential steps to produce fruit that the number of seeds/fruit and seed weight meets dfb the quality requirements.