玉米雜種優勢之基因表現差異分析(第一年)

Abstract

This project was to study the genetic mechanisms of heterosis in maize with a newly developed technology, differential display. Two singlecross cultivars, including TNG 1 and TNG 2, and their inbred parents were used in this experiment. The result indicated single-cross cultivar TNG 1 expressed better hybrid vigor in the northern area of Taiwan than TNG 2. The effects of reciprocal crosses were obvious in yield but not in plant height and ear length of corn. Inbred plants propagated from sib-mating had less weakness than plants from selfpollination. Dominance effect was observed in the differential display (D.D.) analysis. Cytoplasmic effect was also detected based on the band density of D.D. More studies are needed to reveal the relation between agronomic traits and D.D. results.