. Black rice is a local rice originating from East Pasaman which has too high of longevity and plant height, can also be improved through the genetic nature of plant breeding methods, one of which is through mutation breeding. The aim of this research is to improve the genetic West Sumatera landrace to get the early maturity mutant by mutation breeding. This research was conducted since maret 2012 until Maret 2014. Seeds of black rice cultivars was irradiated by gamma rays (60Co) at doses of 0, 100, 200, 300, 400 and 500 Gy respectively at the Center for Application of Isotop and Radiation (CAIR) – Batan, Pasar Jumat, Jakarta. In 2012, was conducted orientation dose screening to M1 population for determine of effective dose for genetic variability. It is very important to selection. In 2013, was selection for lines M2 for early maturity genetic. The result of this research showed that irradiation dose 200 Gy is the effective dose in causing highly genetic variability for harvest time and plant hight characters. In selection to early maturity genetic in M2 obtained 81 candidates with mutation frequency as 0.08 %, and than dwarf and semi-dwarf obtained 32 mutants with mutation frequency as 0,03 %. They are the expectation mutant for future development.udud
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机译：。黑米是从东帕萨曼（East Pasaman）起源的当地水稻，它的寿命和株高过高，也可以通过植物育种方法的遗传特性加以改良，其中之一就是通过突变育种。这项研究的目的是通过遗传育种改良西苏门答腊（West Sumatera）遗传品种，以获得早熟的突变体。这项研究是从2012年Maret到2014年Maret进行的。在等值线和辐射应用中心，分别用0、100、200、300、400和500 Gy的伽玛射线（60Co）辐照了黑米品种的种子（ CAIR）–巴丹，帕萨尔·朱马特，雅加达。在2012年，对M1人群进行了定向剂量筛查，以确定遗传变异的有效剂量。选择非常重要。 2013年，选择了M2品系用于早期成熟遗传。这项研究的结果表明，200 Gy的辐照剂量是引起收获时间和植物高性状高度遗传变异的有效剂量。在选择早熟的过程中，M2中的遗传获得了81个突变频率为0.08％的候选基因，而矮矮和半矮则获得了32个突变频率为0.03％的突变体。他们是未来发展的期望突变体。 ud ud
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