Variabilitas, Heritabilitas, dan Hasil Padi Gogo F3 Persilangan Kultivar Lokal Aceh x Ciherang | Variabilitas, Heritabilitas, dan Hasil Padi Gogo F3 Persilangan Kultivar Lokal Aceh x Ciherang

Indonesio. Peningkatan luas lahan terdampak kekeringan akibat perubahan iklim menuntut pemulia untuk merakit varietas padi yang adaptif pada kekeringan. Tujuan penelitian ini untuk mendapatkan informasi heritabilitas populasi famili F3 hasil persilangan kultivar Sileso (tetua berdaya hasil tinggi toleran kering) dengan varietas Ciherang (tetua berumur genjah) dan untuk mendapatkan genotipe yang berdaya hasil tinggi berumur genjah. Metode penelitian yang dilakukan adalah menanam populasi F3, resiprokalnya, dan tetua. Penelitian dilaksanakan di kebun percobaan Fakultas Pertanian Universitas Samudra, Langsa, Aceh, mulai Agustus sampai Desember 2020. Nilai heritabilitas tinggi pada karakter hasil pertanaman dan umur panen hanya diperoleh pada famili A1B dan A2B. Populasi A1B memiliki nilai heritabilitas hasil per tanaman sebesar 0.61 dan umur panen sebesar 0.85. Populasi A2B memiliki nilai heritabilitas hasil per tanaman sebesar 0.68 dan umur panen sebesar 0.63. Hasil seleksi diperoleh 11 genotipe dengan hasil tinggi berumur genjah yaitu: A3B(13), A1B(25), A1B(201), A1B(208), A1B(282), A1B(297), A1B(303), A2B(38), A2B(221), A2B(358), dan A2B(424) dengan rata-rata hasil per tanaman 90.67 g dan umur panen 117 hari setelah tanam. Kata kunci: resiprokal, toleran kering, umur genjah

Inglés. The increase in the area of land affected by drought due to climate change requires breeders to develop rice varieties adaptive to drought. The purpose of this research was to study the heritability of F3 populations derived from the crossing between local rice variety Sileso (high yielding and drought tolerant) with Ciherang rice variety (early maturing) and to select high yielding and early maturing genotype. The F3 populations, their reciprocal, and parents were used in the study. The experiment was conducted in the experimental field of the Faculty of Agriculture, Samudra University, Langsa, Aceh, from August to December 2020. High heritability on the days to harvest and yield per plant characters were only obtained in the family A1B and A2B. The populations A1B had a heritability value on yield per plant of 0.61 and days to harvest of 0.85. The populations A2B had a heritability value on yield per plant of 0.68 and days to harvest of 0.73. Results from the selection in the F3 population obtained 11 genotypes which had high yield and early maturity, namely: A3B(13), A1B(25), A1B(201), A1B(208), A1B(282), A1B(297), A1B(303), A2B(38), A2B(221), A2B(358), and A2B(424). The average yield per plant and days to harvest of these genotypes was 90.67 g and 117 days, respectively. Keywords: drought tolerant, early maturing, reciprocal