Update Artikelilmiah: 27528

ZULFA ZAKIYAH

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Abstrak (Bhs. Indonesia)

Produksi kedelai perlu ditingkatkan yaitu dengan melakukan budidaya kedelai pada lahan sub optimal seperti lahan salin. Penelitian ini bertujuan untuk: 1) mengetahui pengaruh pemberian taraf salinitas terhadap pertumbuhan dan hasil tanaman kedelai, 2) mengetahui pengaruh genotipe terhadap keragaman penampilan genotipe kedelai, 3) mengatahui interaksi antara genotipe dan taraf salinitas terhadap pertumbuhan dan hasil tanaman kedelai, dan 4) memperoleh genotipe kedelai yang memiliki toleransi terhadap pemberian taraf salinitas. Penelitian dilaksanakan di rumah kaca dan Laboratorium Agronomi dan Hortikultura, Fakultas Pertanian, Universitas Jenderal Soedirman pada bulan Februari - Juni 2019. Rancangan percobaan menggunakan Rancangan Acak Kelompok (RAK) dengan dua faktor. Faktor pertama adalah genotipe kedelai (Slamet, Anjasmoro, Indo 253, A403, dan P71). Faktor kedua adalah taraf salinitas (kontrol, 3 dS/m, 6 dS/m, dan 9 dS/m). Variabel yang diamati terdiri atas tinggi tanaman, jumlah daun trifoliat, luas daun, kandungan klorofil daun, jumlah buku pada batang utama, jumlah buku total, jumlah cabang, bobot daun segar, bobot daun kering, bobot tanaman segar, bobot tanaman kering, panjang akar, jumlah polong per tanaman, bobot polong isi per tanaman, bobot biji per tanaman, dan bobot 100 biji. Hasil penelitian menunjukkan bahwa taraf salinitas mempengaruhi seluruh variabel pertumbuhan dan hasil kecuali jumlah cabang, panjang akar, bobot daun segar, bobot tanaman segar, dan jumlah polong per tanaman. Terjadi variasi penampilan genotipe kedelai pada seluruh variabel pertumbuhan kecuali panjang akar dan bobot daun kering. Interaksi antar genotipe dan taraf salinitas mempengaruhi jumlah daun trifoliat, bobot tanaman segar, kandungan klorofil daun, dan bobot 100 biji. Berdasarkan pengukuran Indeks Toleransi Cekaman, varietas Slamet merupakan varietas yang toleran terhadap cekaman salinitas hingga taraf 6 dS/m (N2).

Abtrak (Bhs. Inggris)

Soybean production has not been able to meet the needs of national soybean consumption. The efforts that can be made to increase soybean production by soybean cultivation on sub optimal land such as saline land. This research aimed to: 1) determine the effect of giving salinity levels on the growth and yield of soybean plants, 2) determine the effect of genotype on the diversity of soybean genotype appearance, 3) determine the interaction between genotype and salinity level on the growth and yield of soybean plants, and 4) determine the soybean genotypes that has tolerance to the salinity level. This research was conducted at the screen house and Agronomy and Horticulture Laboratory, Agriculture Faculty, Jenderal Soedirman University on February - June 2019. The experimental design used a Randomize Block Design (RBD) with two factors. The first factor was soybean (Slamet, Anjasmoro, Indo 253, A403, and P71). The second factor was the salinity level (control, 3 dS/m, 6 dS/m, and 9 dS/m). The variables observed were plant height, total leaves, leaf area, chlorophyll content, number of main node, total number of node, number of branches, root length, fresh leaf weight, dry leaf weight, fresh plant weight, dry plant weight, number of pods per plant, weight of filled pods per plant, seed weight per plant, and 100 seeds weight. The results of the research showed the salinity levels effect all growth and yield variables except for the number of branches, root length, fresh leaf weight, fresh plant weight, and number of pods per plant. Variations in appearance between soybean genotypes on all growth variables except the root length and fresh plant weight. Interaction between genotypes and salinity levels. The significantly different result on the total leaves, fresh plant weight, chlorophyll content, and 100 seeds weight. Based on the measurement of the Stress Tolerance Index (STI), Slamet variety is a tolerance variety of salinity stress to the level 6 dS/m (N2).

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