1994). By chance, the intragenic recombination may be occurred in the recombination hotspots or cold spots (Mourad et al. 1994). Tto identify the intragenicthis recombination, restriction fragment length polymorphism (RFLP) markers within target genes were used to distinct two parental alleles in traditional genetics . The intragenic recombination causes a distinct fragment pattern from both parents (Okagaki and Weil 1997). To easily discover the intragenic recombination, two individuals carried non-functional alleles of targeted genes, whose intragenic recombination causes a functional allele and obtained a distinct phenotype change, are priority used to develop a population for estimation of intragenic recombination rate. The functional alleles/plants in the progeny are resulted from intragenic recombination, and the ratio of functional allele plants to mutation allele plants was deemed as intragenic recombination rate.For example, the wxgene encodes a granule-bound starch synthase required for the synthesis of amylose in both the endosperm and pollen of maize and rice (Shure et al. 1983; Wang et al. 1990).Wxpollen grains stain deep blue in I2KI solution, whereas wxpollen grains stain light brown. The large sample of pollen and the easily
1994). By chance, the intragenic recombination may be occurred in the recombination hotspots or cold spots (Mourad et al. 1994). Tto identify the intragenicthis recombination, restriction fragment length polymorphism (RFLP) markers within target genes were used to distinct two parental alleles in traditional genetics . The intragenic recombination causes a distinct fragment pattern from both parents (Okagaki and Weil 1997). To easily discover the intragenic recombination, two individuals carried non-functional alleles of targeted genes, whose intragenic recombination causes a functional allele and obtained a distinct phenotype change, are priority used to develop a population for estimation of intragenic recombination rate. The functional alleles/plants in the progeny are resulted from intragenic recombination, and the ratio of functional allele plants to mutation allele plants was deemed as intragenic recombination rate.For example, the wxgene encodes a granule-bound starch synthase required for the synthesis of amylose in both the endosperm and pollen of maize and rice (Shure et al. 1983; Wang et al. 1990).Wxpollen grains stain deep blue in I2KI solution, whereas wxpollen grains stain light brown. The large sample of pollen and the easily