Pola SegregasiKarakter KetahananTanaman Kedelai(Glycine max [L]. Merrill)Terhadap Infeksi Soybean Mosaic Virus Populasi F2 Keturunan Taichung X Tanggamus

Abstract

This study aims to determine the pattern of segregation character soybean plant
resistance to infection SMV and other agronomic characters as well as many genes
that play a role in the inheritance of these traits in the F2 populations from crosses
Taichung x Tanggamus follow of Mendel ratio or a modification of expectations and
knowing the number of crosses. This research was conducted at the Laboratory
LapanganTerpadu Faculty of Agriculture, University of Lampung from September
2013 until January 2014, and then continued in the laboratory observations Seed and
Plant Breeding, University of Lampung. Propagation of virus carried in Kampung
Baru, Bandar Lampung. This research uses experimental design without repetition
with a single treatment design nested structured data is analyzed using the chi-square
test for the suitability of the normal distribution and chi-squared test to test the of
Mendel ratio and modifications . The results of this study indicate the character
frequency distribution of plant height, grain weight per plant soybeans F2 generation
from crosses Taichung x Tanggamus normal spread, while the frequency distribution
for character flowering age, harvesting, healthy seed number per plant, number of
productive branches, number of pods per plants and severity of disease spread is not
normal. Estimates of the number of genes that control the character of harvesting is
controlled by two genes are recessive epistasis duplicate the ratio 9: 7, days to
flowering follow the ratio 1: 2: 1 which is controlled by a single gene that reacts not
perfect, healthy character of the number of seeds per plant followed the ratio 3: 1 and
for the total character of pods per plant, number of productive branches as well as the
severity of the disease follows the ratio of 13: 3. the character dikendalikanolehdua
genes dominant-recessive epistasis react. There are 21 numbers belonging
expectations resistant to SMV.

Keywords: Soybean, segregation, resistance characteristics, and SMV.