Abstract
Accession of red rice does not have the traits of early maturity, drought tolerance and high yield. Mutation is needed to obtain the desired genetic resources. Gamma-ray irradiation is the right method because it was proved capable of producing hundreds of new varieties, which are better than the previous. This study aimed to identify the improvement of early maturity and drought tolerance of red rice mutant to gamma ray irradiation results. The research materials are M4, M5 and M6 strain, which are derived from the Bangka’s accession local red rice (Celak Madu, Ruten Puren and radix). The three accession seed have been treated with gamma-ray irradiation doses of 150, 200 and 250 Gray. The results showed gamma ray irradiation dose of 150 Gray and 200 Gray to red rice accession can form a mutant with the character of harvesting time less than 115 days after planting and was more drought tolerant than the previous. M6-GR150- 1-9-13 strain was selected as a candidate for early maturity, drought tolerant and high yield mutant.
Highlights
This study e aimed to identify the improvement of early maturity and drought tolerance of red rice s mutant to gamma ray irradiation results
The results showed e gamma ray irradiation dose of 150 Gray and
The selected mutant strains derived from Ruten Puren accession with gamma ray irradiation dose of 200 gray, radix irradiation dose of 150 and 200 gray
Summary
Those M4 grain and the index of drought tolerance trait were selected because of their early maturity that calculated by the formula: S=(1-Y/Yp)/(1-. Red rice paddy has nutritional value and at the third mutants (M3). X/Xp).[15] anthocyanin higher than white rice. The The first research was the selection of 1920 The third research was drought tolerant anthocyanin content of local Indonesian red individual pedigree of M4 to get early maturity trait selection of M6. There were 5 best strain rice paddy is 0.03 to 210.50 mg/100 g and Thai and high grain yield traits. Harvesting age of M6 from the second research. The research rice is 109 mg/100 g.1,2. The amino acid alanine (dap), number of productive tillers, panicle was arranged in a split-plot design such as M5- The research rice is 109 mg/100 g.1,2 The amino acid alanine (dap), number of productive tillers, panicle was arranged in a split-plot design such as M5-
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