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    Rice · Rice · Short entry

    Rojolele

    A tall, long-season local rice of Klaten in Central Java, associated with Delanggu, prized for cooked rice that is soft, slightly sticky (pulen) and fragrant. Its 155-day season and plants up to 155 cm tall made it hard to grow, so Klaten regency and Indonesia's nuclear energy agency BATAN bred shorter, earlier mutants from it by gamma irradiation. Two of them, Srinuk and Srinar, were recommended for release in 2019.

    A pale polished rice grain, illustrated for Rojolele.
    Rojolele — editorial grain study, polished, not to scale. Appearance alone does not establish variety or protected origin.

    Shortening an old rice

    Rojolele is a local rice originating from Delanggu in Klaten. Demand for it was rising while production stayed scarce, because the plant needs about 155 days to mature and grows to 146–155 cm, which makes it lodge (fall over) easily. Klaten's department of agriculture therefore worked with BATAN, the National Nuclear Energy Agency, to improve it by gamma irradiation of seed; field trials of irradiated Rojolele were run at Glagahwangi in Polanharjo, Klaten, in 2014.

    The joint research began in 2013 with three candidate lines: A.10 (Srinuk), A.82.1 (Srinar) and A.106.1 (Sriten). At the Ministry of Agriculture's release hearing in June 2019 only Srinuk and Srinar were recommended. The Central Java government reported that they mature in 105 days, against 160 days for the old Rojolele, and stand about 110 cm tall, 45 cm shorter than the old variety.

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