Componetes não aparecem

import javax.swing.*;

import java.awt.*;

@SuppressWarnings("serial")
public class VisualEnquete extends JPanel {
	
	//BoxLayout layout;
	GridLayout layout;
	private int layoutLinhas;
	private int layoutColunas;
	
	public VisualEnquete(Enquete enq) {
		// TODO Auto-generated constructor stub
		
		//layout = new BoxLayout(this, BoxLayout.Y_AXIS);
		
		layoutLinhas = 1;
		layoutColunas = 1;
		layout = new GridLayout(layoutLinhas,layoutColunas);
		setLayout(layout);
		setBorder(BorderFactory.createLineBorder(Color.WHITE, 10));
		
		
		add(new JLabel(" "+enq.getPergunta()));		
		
		if(enq.getOpcoes() != null)
		{
			for(Opcao op : enq.getOpcoes())
			{				
				layoutLinhas++;
				layout.setRows(layoutLinhas);
				add(op.getVisual());
				
			}
		}
		
	}
	
	public void reload(Enquete enq)
	{
		if(enq.getOpcoes() != null)
		{
			for(Opcao op : enq.getOpcoes())
			{
				this.layoutLinhas++;
				this.layout.setRows(layoutLinhas);
				add(op.getVisual());				
			}
		}
		
	}

}

import java.awt.Color;
import java.awt.GridLayout;

import javax.swing.*;

@SuppressWarnings("serial")
public class VisualOpcao extends JPanel{
	
	public static ButtonGroup grupo;
	
	public VisualOpcao(Opcao op) {		
		// TODO Auto-generated constructor stub
		
		GridLayout layout = new GridLayout(1,3);
		setLayout(layout);		
		
		setBorder(BorderFactory.createLineBorder(Color.white));
		
		add(new JLabel(" "+op.getTexto()));
		add(new JLabel(" "));
		
		JRadioButton radio = new JRadioButton();
		
		grupo.add(radio);
		
		add(radio);
		
	}

}