Peningkatan Efisiensi Pengisian dan Pembentukan Biji Mendukung Pruduksi pada Hibrida (Increasing Efficiency Seed Filling and Formation for Support Hybrid Rice Production)

Abstract

Increasing efficiency seed formation was conducted by increment of reseptive stigma and total amount of pollen viability. Artificial excudate sprayed on inflorescence Cytoplamic Male Sterility (CMS) plant, on five levels (1-5; 6-10, 11-15, 16-20 days after 50% flowering and controle). Leaf fertilizer, GA3, leaf f709ertilizer+GA3, leaf fertilizer+GA3+ recommended GA3 sprayed on the leaf of Restorer on the vegetative phase, with three level applied on 6, 7 and 8 weeks after planting (WAP). The research was carried out in Seed Technology Laboratory, Leuwikopo, Darmaga, Bogor at September up to December 2009. Application of artificial exudates on inflorecentia did not affect the reseptive of stigma CMS with variable of total unfilled spikelet and total filled spikelet. The treatment of leaf fertilizer, GA3 and the combination on the Restorer enhanced total and viability of pollen. Leaf fertility + GA3 gave the highest presentage of viability of pollen comparing with other treatment. Vatiation time of leaf fertilizer, GA3 and others combination influence significant on presentage pollen viability and did not significant on the total of pollen. The treatment on 8 WAP gave the highest pollen viability.