Figure 4 Mid-parent heterosis (MPH) for some performance traits in diploid and triploid hybrids.W20=20th day weight;
W110=110th day weight; W200=200th day weight; CF110=110th daycondition factor; CF200=200th day condition factor;
SGR 20-605 specific growth rate betweendays 20 and 60; SGR60-1105 specific growth rate between day 60 and 110;
SGR 110-200 = specific growth rate between day 110 and 200.Mean values were used for determining MPH.