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      Ketahanan dan dinamika ketahanan selama pertumbuhan beberapa genotipe padi terhadap bias daun dan bias leher malai

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      Date
      2000
      Jenis/Type
      Thesis
      Author
      Ramli, Murni
      Mukelar Amir
      Yudiwanti WEK
      Aswidinnoor, Hajrial
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      Abstract
      Beras merupakan pangan utama di Indonesia yang selama ini dipenuhi dari produksi padi sawah. Adapun padi gogo, produktivitasnya masih sangat kecil yaitu, 2.2 ton/ha (BPS, 1996). Rendahnya produktivitas ini disebabkan oleh antara lain serangan penyakit blas yang ditimbulkan oleh cendawan Pyricularia oryzae Cav. Penyakit ini tidak hanya menjadi masalah di pertanaman padi gogo saja, namun kini mulai meluas di persawahan. Upaya untuk mengantisipasi masalah ini adalah merakit varietas tahan blas melalui program pemuliaan yang mempertimbangkan tiga faktor utama perkembangan penyakit yaitu, patogen, inang dan lingkungan. Blas menyerang pada semua organ tanaman padi selama masa pertumbuhan tanaman, sehingga pengujian ketahanan pada fase persemaian saja tidak mewakili ketahanan yang sebenarnya. Oleh karena itu perlu pengujian ketahanan terhadap blas daun dan blas leher malai serta mempelajari pola reaksi ketahanan tanaman terhadap blas selama masa pertumbuhan tanaman.
       
      Rice is the main staple food in Indonesia, and its supply has largely been met through lowland rice production. Meanwhile, upland rice (padi gogo) productivity remains low, at around 2.2 tons/ha (BPS, 1996). This low productivity is partly caused by blast disease, which is induced by the fungus Pyricularia oryzae Cav. This disease is not only a problem in upland rice cultivation but has also begun to spread into irrigated rice fields. Efforts to address this issue include the development of blast-resistant varieties through breeding programs that consider the three main factors influencing disease development: the pathogen, the host, and the environment. Blast disease can attack all parts of the rice plant throughout its growth stages. Therefore, resistance testing at the seedling stage alone does not adequately represent true field resistance. For this reason, it is necessary to evaluate resistance to both leaf blast and neck blast, as well as to study the patterns of plant resistance responses to blast disease throughout the plant’s growth period.
       
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      http://repository.ipb.ac.id/handle/123456789/5384
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      • MF - Agriculture [4156]

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      Indonesia DSpace Group 
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