| 摘要 |
PCT No. PCT/EP95/02157 Sec. 371 Date Mar. 21, 1997 Sec. 102(e) Date Mar. 21, 1997 PCT Filed Jun. 6, 1995 PCT Pub. No. WO95/34634 PCT Pub. Date Dec. 21, 1995A plant consisting essentially of cells which comprise in their genome a homozygous male-sterility genotype at a first genetic locus; and a color-linked restorer genotype at a second genetic locus, which is heterozygous (Rf/-) for a foreign DNA Rf. The foreign DNA Rf comprises: a) a fertility-restorer gene capable of preventing the phenotypic expression of the male-sterility genotype, and b) at least one anthocyanin regulatory gene involved in the regulation of anthocyanin biosynthesis in cells of seeds of the plant which is capable of producing anthocyanin at least in the seeds of the plant, so that anthocyanin production in the seeds is visible externally. Preferably, the anthocyanin regulatory gene is a shortened R, B or C1 gene or a continuation thereof. The invention also relates to DNA sequences encoding shortened R, B or C1 anthocyanin regulatory genes and to a process for maintaining a line of male-sterile plants which comprises crossing a male-sterile parent plant and a maintainer parent plant comprising homozygous male-sterility genotype and a restore genotype comprising fertility-restorer gene and an anthocyanin regulatory gene.
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