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The o2 gene can increase the protein content of corn grain lysine into, into a high-quality protein maize. MECs is a special kind of high-oil corn, o2 gene into which observed MECs characters. According to the the Griffing method IV, 4 have been imported o2 gene of MECs and two ordinary MECs, 15 hybrid combinations paired six inbred lines, divided into 3 groups according to parental, on the main combining ability and heritability of traits research and analysis, and the results are as follows: traits: most hybrid combination of growth period is relatively long. Comparison of various combinations of the average growth period traits, group differences were not significant. One or both parents are o2 combination of micro-endosperm type from ear height, plant height and total leaf area of ??three traits analysis, the increasing trend of the high performance of the plant height, ear leaf area has decreased, which means into o2 gene adverse effects of these three traits. the o2 gene into milky stage dry kernel oil rate decreasing trend, while the milky stage dry grain soluble sugar content increased trend, therefore, is not conducive to the increase in the rate of the milk stage dry kernel oil, but it is fresh stage grain dry weight sugar content effective way to improve the milky stage MECs. Combining ability analysis in addition to sugar emergence, stem diameter, silk, milk stage, the remaining seven traits Gca variance and the Sca variance are reached very significant levels. When the hybrid combination of the two parental the Sca and Gca effect of higher value, the characters observations of this should be relatively large, but by comparison with the observed values, a small number of traits does not comply with this law, and the total Combining Ability ( Tca) analysis of the effect of the value and the observed value tends to the same law. O2 gene derived MECs import hybrid combination of observations and combining ability analysis will reduce the oil content of the MECs fresh stage of grain dry weight, while improving the MECs milky stage grain dry weight soluble The sugar content. 3, the genetic parameters of the seedling, silking two traits affected by the environment is relatively large. Other 9 traits are affected by the environment is relatively small, that ear height, plant height, leaf area, leaf number, tasseling stage, loose powder, stem diameter, milky stage dry grain sugar content, the milky stage dry grain oil content traits by genetic effect is relatively large. Plant height, tasseling period, ear height, number of leaves and other traits h2N. 4 traits in the early generations of selection, and other traits due to the relatively low heritability, selection available in the later generations.
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