Crossing potential of open pollination in Cajuputi seedling seed orchard at Paliyan, Gunungkidul

Abstract

There are two possibilities on open pollination: cross pollination and self pollination. This research was aimed to identify cross pollination potential within and among provenance, and to determine the flowering behavior of each provenance in seedling seed orchard of cajuputi at Paliyan, Gunungkidul. The research was conducted based on flowering phenology (start of flowering, end of flowering and duration of flowering in one period) for all flowering trees during two flowering periods. The result showed that there was high crossing potential in seedling seed orchard of cajuputi based on flowering synchrony. Land race of Gundih has highest crossing potential due to longevity and intensity of flowering, while the provenance from Northern Australia has the lowest crossing potential. Other provenances (Masarete, Rat Gelombeng, Waipirit, Pelita Jaya, Cotonea, Suli and Western Australia) also have high crossing potential at the time when the number of individual was greatest and flowering intensity highest. This research demonstrated that high crossing potential was found within provenance and among provenances except Northern Australia. The implication of this research deployment of improved seed produced from open pollination in seedling seed orchard was recommended for high crossing potential expressed from flowering synchrony.

Identification of Morphology and Relationships of Porang Plants (Amorphophallus Muelleri Blume) in Kumpeh Ulu District, Muaro Jambi Regency

“…These seeds are the ones that will fall out and fall to the ground so that porang are often found growing close together, this allows for crossbreeding between populations in one environment. In general, forest plants interbreed (outcrossing), only a few are capable of inbreeding (Kartikawati and Sumardi, 2017). So that there is a wide genetic diversity in porang due to cross-breeding that occurs.…”

SELEKSI DAN PEROLEHAN GENETIK PADA UJI KETURUNAN GENERASI KEDUA KAYUPUTIH (Melaleuca cajuputi subsp. cajuputi) DI GUNUNGKIDUL

“…Upaya pemuliaan tanaman kayuputih telah dimulai dengan membangun kebun benih uji keturunan skala kecil pada tahun 1998 di Paliyan Kabupaten Gunungkidul dengan menggunakan 19 famili yang berasal dari Kepulauan Buru, Ambon, Seram, dan Australia bagian barat dan utara (Kartikawati & Sumardi, 2017). Untuk memperluas basis genetiknya pada tahun 2002 dibangun kebun benih uji keturunan generasi pertama (F1) di Gundih, Ponorogo dan Cepu (Kartikawati et al, 2014).…”