Korelasi dan Analisis Jalur Karakter Perkecambahan dan Karakter Agronomis yang Berkontribusi terhadap Hasil Padi (Oryza sativa L.) di Bawah Cekaman Masam
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Cekaman Masam,
Hasil,
Padi,
Perkecambahan
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Abstract
Proses perkecambahan padi merupakan langkah awal penting penentu perkembangan tanama dan dapat dipengaruhi oleh faktor lingkungan, seperti cekaman kemasaman. Sebagian besar lahan pertanian di Indonesia memiliki nilai pH yang rendah. Oleh karena itu penelitian ini dialakukan untuk mengetahui hubungan antara karakter morfologis perkecambahan padi pada fase perkecambahan pada kondisi cekaman masam terhadap hasil panen pada lahan sawah. Penelitian ini dilaksanakan pada bulan Oktober 2022. Percobaan perkecambahan dilasanakan di Laboratorium Pemuliaan Tanaman yang berada di Fakultas Pertanian, Universitas Brawijaya, sedangkan penanaman di lahan dilaksanakan di lahan percobaan milik Universitas Brawijaya, yang terletak di Kelurahan Jatimulyo, Kecamatan Lowokwaru, Kota Malang. Media perkecambahan dipersiapkan dalam kondisi pH masam. Simulasi kondisi hujan asam atau simulated acid rain (SAR) disiapkan dengan menggunakan larutan buffer asam sulfur H2SO4. Variabel yang diamati meliputi analisis korelasi genotipik, fenotipik dan analisis jalur dilakukan menggunakan software OPSTAT. Hasil penelitan ini menunjukan bahwa karakter perkecambahan bobot kering tunas pada kondisi masam memiliki nilai korelasi genotipik dan fenotipik dan pengaruh langsung yang tinggi terhadap hasil. Karakter umur panen dan umur berbunga menunjukan nilai koefisien korelasi dan pengaruh langsung yang negatif terhadap hasil panen.
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