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DIVERSITY AND CORRELATION TEST OF RESISTANT CHARACTER IN SOYBEAN SECOND GENERATION (F2) TANGGAMUS AND B3570 CROSSING AGAINST SOYBEAN MOSAIC VIRUS KERAGAMAN DAN UJI KORELASI KARAKTER KETAHANAN KEDELAI GENERASI F2 PERSILANGAN TANGGAMUS x B3570 TERHADAP SOYBEAN MOSAIC VIRUS
The productivity of soybean in Indonesia is still low. One of the reason of this situation is caused by soybean mosaic virus. The study was conducted in September 2013 until January 2014 at the Integrated Field Laboratory of faculty of Agriculture, University of Lampung, and at the Laboratory of Seed and Plant Breeding, University of Lampung. The aim of this studywas to determine (1) the estimation of genotypes and fenotypes diversity for disease severity and agronomy characters, (2) the correlation between disease severity and agronomy characters in soybean, and (3) the range mean of incubation period, disease severity and agronomy characters in soybean. The study was conducted in September 2013 until January 2014 at the Integrated Field Laboratory of the College of Agriculture and Seed and Plant Breeding Laboratory, University of Lampung. The seed which was used in this study from Tanggamus and B3570 crossing (F2). Each plant was inoculated by SMV, and disease severity and agronomy characters were observed in this study. The design used in this study was experimental design without replications. The results showed that (1) Extensive genotypes and phenotypes were found in the character of disease severity, plant height, number of pods, number of empty pods, filled pods, numberof seeds, the percentage of healthy seeds, the percentage of diseased seeds, seed weight per plant, and day of harvesting, (2) Disease severity character did notcorrelate with various kind of agronomy characters. Agronomy characters that positively correlated were number of productive branches between number of pods, number of filled pods, number of empty pods, number of seeds, seed weight per plant, and number of pods correlated with number of seeds, (3) extensive mean of each characters were found in the number of pods, number offilled pods, and number of seeds. Key words : Correlation, Diversity, soybean mosaic virus (SMV). Produksi kedelai di Indonesia saat ini masih rendah. Salah satu penyebab rendahnya produksi disebabkan oleh infeksi soybean mosaic virus (SMV). Penelitian dilaksanakan di Laboratorium Lapangan Terpadu Fakultas Pertanian Universitas Lampung, dan di Laboratorium Benih dan Pemuliaan Tanaman Universitas Lampung pada bulan September 2013 sampai Januari 2014. Penelitian ini bertujuan untuk mengetahui (1) besaran nilai keragaman genotipe dan fenotipe karakter keparahan penyakit dan karakter agronomi kedelai, (2) korelasi antara karakter keparahan penyakit dan karakter agronomi kedelai, dan (3) kisaran nilai tengah karakter periode inkubasi, keparahan penyakit dan karakter agronomi. Benih yang digunakan merupakan benih hasil persilanganTanggamus x B3570 generasi F2. Setiap individu tanaman diinokulasi dengan soybean mosaic virus (SMV) dan diamati keparahan penyakit serta karakter agronominya. Rancangan percobaan yang digunakan adalah rancangan percobaan tanpa ulangan. Hasil penelitian menunjukkan (1) keragaman genotipe dan fenotipe yang luas terdapat pada karakter keparahan penyakit, tinggi tanaman, total jumlah polong, jumlah polong hampa, jumlah polong bernas, total jumlah biji, persentase biji sehat,persentase biji sakit, bobot biji pertanaman, dan umur panen, (2) karakter keparahan penyakit tidak berkorelasi dengan berbagai karakter agronomi. Karakter agronomi yang berkorelasi positif yaitu jumlah cabang produktif dengan jumlah total polong, jumlah polong bernas, jumlah polong hampa, total jumlah biji, dan bobot biji pertanaman, serta jumlah polong berkorelasi dengan total jumlah biji, (3) kisaran nilai tengah luas terdapat pada karakter jumlah total polong, jumlah polong bernas, dan jumlah total biji. Kata kunci : Keragaman, korelasi, soybean mosaic virus (SMV).
DIVERSITY AND CORRELATION TEST OF RESISTANT CHARACTER IN SOYBEAN SECOND GENERATION (F2) TANGGAMUS AND B3570 CROSSING AGAINST SOYBEAN MOSAIC VIRUS KERAGAMAN DAN UJI KORELASI KARAKTER KETAHANAN KEDELAI GENERASI F2 PERSILANGAN TANGGAMUS x B3570 TERHADAP SOYBEAN MOSAIC VIRUS (File PDF)
DIVERSITY AND CORRELATION TEST OF RESISTANT CHARACTER IN SOYBEAN SECOND GENERATION (F2) TANGGAMUS AND B3570 CROSSING AGAINST SOYBEAN MOSAIC VIRUS KERAGAMAN DAN UJI KORELASI KARAKTER KETAHANAN KEDELAI GENERASI F2 PERSILANGAN TANGGAMUS x B3570 TERHADAP SOYBEAN MOSAIC VIRUS (Other)
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