To study the function of AGPase large subunit Ⅰ gene(LSU Ⅰ) in synthesis of starch in wheat plants, full cDNA sequences (1947 bp) of a LSU Ⅰ gene (GenBank No. DQ839506) were cloned from grains of common wheat (Triticum aestivum, Yujiao 2 cultivar) with RT-PCR, and its sense, antisense and RNAi vectors were also constructed. The coding regions of LSU Ⅰ were 1569 bp (from 117-1685 bp), which shared high homogeneity with Z21969 gene sequences. The cloned LSU Ⅰ gene had two different bases with the Z21969 (T/C, at 851 bp site; and G...