| By pollen tube pathway method, total DNA of oat (Avera Sativa L.) was transferred into common wheat (Ningchun 4). Consequently, several variant strains were changed in photosynthetic and agronomic traits: the period of photosynthetic function of flag leaf and the chlorophyll contents were altered; photosynthetic rates were raised; spike length, spikelet number, grain number of main spike and grain weight of main spike were generally increased. The results of variance analysis showed that there were significantly different between the variant strains and Ningchun 4 in the chlorophyll contents, photosynthetic rates and major agronomic traits. Meanwhile, there were significantly positive correlations between chlorophyll contents and photosynthetic rates in filling period. In initial filling period, there were significantly positive correlations between the photosynthetic rates of variant strains and spikelet number, grain number of main spike and grain weight of main spike. According to the above results, the agronomic characters of wheat can be improved by introducing DNA of oat, which provided abundant materials for wheat breeding. |