Self-Pollinated (Geinotogami) of Uncaria gambir (Hunter) Roxb. Type Udang
Muhammad Rizki *
Departmen of Crop Science, Faculty of Agriculture, Andalas University, Padang, West Sumatera, Indonesia.
Indra Dwipa
Departmen of Crop Science, Faculty of Agriculture, Andalas University, Padang, West Sumatera, Indonesia.
Aprizal Zainal
Departmen of Crop Science, Faculty of Agriculture, Andalas University, Padang, West Sumatera, Indonesia.
*Author to whom correspondence should be addressed.
Abstract
Aims: The research aimed to study the ability of natural and artificial self-pollinated (Geitonogamy) of gambir.
Study Design: Experimental method consisted of determining the sample plants. Sampling determination was conducted by non probability sampling, purposive sampling.
Place and Duration of Study: This research was conducted in the UPT Experimental Garden of the Faculty of Agriculture, Andalas University, Padang from September 2019 to December 2019
Methodology: an experimental method consisted of determining the sample plants, conducting natural and artificial geitonogamy self-pollinated systems, observing sample plants, collecting data based on the experiment, and sample-testing in the laboratory. Sample determination selected by non-probabilistic sampling with purposive sampling method. Observation included percentage of pollination, percentage of fertilization, number of fruit formed, pollen fertility and sterility
Results: Data observations were analyzed with simple statistics. The results showed that (1) the percentage of pollination through the geitonogamy natural pollination system of udang gambier type was 89.30%, (2) the percentage of fertilization in the geitonogami's own natural pollination system was 10.68% and artificial was 27.5%, (3) the average percentage of pollen fertility was 56.56% and the pollen sterility was 43.44% tested with the bromothymol blue staining method.
Conclusion: Artificial geitonogami self-pollination was potential to develop for gambir cultivation.
Keywords: Catechin, fertilization, gambier, geitonogami, self-pollinated