Evaluasi Metode Skrining untuk Cekaman Kekeringan pada Aksesi Lokal Padi Gogo
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Date
2021-09-15
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KOMISI NASIONAL SUMBER DAYA GENETIK
Abstract
One of the potential sources of variability for assembling new rice varieties for stressful environments is local accessions that have well-adapted to a particular area. IAARD Gene Bank is one of the institutions that conserve ex-situ various types of local accessions, one of which is upland rice. To explore the genetic potential of local accessions of upland rice, an efficient and effective method for germplasm screening is needed. This study aimed to evaluate the screening method of local upland rice germplasm against drought stress. A total of nine accessions of local upland rice were evaluated for their tolerance to drought at various stress levels based on the gravimetric method. The research was conducted in the greenhouse of ICABIOGRAD Bogor during June-September 2017. The experimental was designed in a split-plot, consisted of four levels of field capacity as the main plot and nine accessions of local upland rice as sub-plots with three replications. The results showed that none of the accessions survived at 25% field capacity. Meanwhile, at 75% and 50% field capacity, the results varied among the accessions tested with higher plant survival percentages at 75% field capacity. The results obtained from this study can be used as initial useful information regarding the genetic potential of local upland rice accessions to drought stress. The screening method evaluated in this study can also be implemented as recommendations for the application of screening method for other local upland rice accessions collected the IAARD Gene Bank.
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Keywords
Drought stress, local upland rice, IAARD gene bank