The Effectiveness of Gansu Rye in Transferring Desirable Genes to Common Wheat in the Combination of Wheat and Rye

doi:10.3321/j.issn:1000-7091.2000.Z1.008

Abstract

Abstract: Chinese Spring ph1b mutant and Chinese Spring wheat as female were crossed respe ctively with Gansu rye and Lanzhou rye for observing their MI chromosomes pairin g in F1 generation. Then the F1 plants were backcrossed with Chinese Spring to test the seed set. The result shows that whatever the female is, Chinese Spring ph1b mutant or Chinese Spring, the chromosomes pairing level of the combinations with Gansurye is much higher than that of Lanzhou rye. It is the first time to discover that the promoting homoeologous chromosomes pairing gene exist in Gansurye. The analysis to the result of F1 MI chromosomes pairing in all combination s suggests that Gansurye may have ph1b-like gene. In addition, the result of bac kcross shows that the rate of seed set in the combination with Gansu rye as male are obviously higher. Thereby, it is evident that Gansurye in transferring desir able genes from rye to wheat is more sufficient than Lanzhou rye, especially with the utilization of ph1b gene.

Key words: Common wheat, Rye, Homoeologous pairing, ph1b-like gen e, Backcross, Rate of seed set

LI Si min, LI Jun hui, FAN Lu. The Effectiveness of Gansu Rye in Transferring Desirable Genes to Common Wheat in the Combination of Wheat and Rye[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2000, 15(S1): 36-39. doi: 10.3321/j.issn:1000-7091.2000.Z1.008.

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