Abstract
Increasing the genetic diversity of plants can be done through physical mutations with gamma-ray irradiation. This study aims to determine gamma-ray irradiation on the growth of six M1 generation black rice accessions. This research was conducted in May-October 2019 at the Experimental Rice Fields of the Tasikmalaya Perjuangan University, West Java. The materials used in this study were six accessions from Tasikmalaya (PH, PH2, PH3, PH5, PH7, and PH8) without 0 Gy irradiation and with 200 Gy gamma-ray irradiation of M1 generation. The results showed that gamma-ray irradiation reduced germination characteristics, seedling height, and flowering age. Some of the accessions showed different effects; there were a decrease and an increase in the characters of root length, plant height, number of productive tillers, number of unproductive tillers, and the total number of tillers.
Highlights
Indonesia has many rice (Oryza sativa L.) varieties, one of the popular rice in the community is black rice
Black rice is consumed as a functional food because it is rich in nutrients such as amino acids, potassium, magnesium, calcium, iron, anthocyanin pigments, and flavonoids
We used six black rice accessions originally from Tasikmalaya that collected by the Department of Agrotechnology of Perjuangan University
Summary
Indonesia has many rice (Oryza sativa L.) varieties, one of the popular rice in the community is black rice. Black rice is consumed as a functional food because it is rich in nutrients such as amino acids, potassium, magnesium, calcium, iron, anthocyanin pigments, and flavonoids. Those nutrients can promote body health and increase resistance to disease (Suhartini and Suardi 2010). The economic value of black rice is high because it has higher properties and nutritional value compared to white and brown rice. Local rice has limitations that make its existence increasingly abandoned and threatened with extinction, including long-life (>145 days), a high posture that causes plants to fall not resistant to pests and diseases, and low production (Toha et al, 2005)
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