Genetics Study on the Resistance to Stripe Rust of Triticum aestivum-Elymus mollis Trin.Hara Translocation Lines
Yang Min-na · Anhui nongye kexue · 2009
[Objective] The study aimed to conduct the genetic study on resistance to stripe rust of Triticum aestivum-Elymus mollis Trin.Hara translocation lines.[Method] With T.aestivum-E.mollis translocation lines including M853-2,M853-4,M8657-1,M8657-4 and M853-1 as the tested materials,their resistance to stripe rust were evaluated by Chinese wheat stripe rust strains including 6 physiological races of CY29,CY30,CY31,CY32,Su11-4 and Su11-11 and that the genetic analysis of resistance to stripe rust had made on the 2 translocation lines of M853-2 and M8657-1.[Result] The resistant spectrum of 5 translocation lines was remarkably different and it was presumed preliminarily that 5 translocation lines had different genes of resistance to stripe rust.The resistance to stripe rust of the translocation line M853-2 against the stripe rust line CY31 was controlled by two dominant karyoplasms genes and that against the stripe rust line Su11-11 was controlled by one pair of dominant gene.The resistance to stripe rust of the translocation line M8657-1 against the stripe rust line CY31 was controlled by two dominant karyoplasms genes and that against the stripe rust line Su11-11 was controlled by one pair of recessive gene.[Conclusion] The resistance to stripe rust of T.aestivum-E.mollis translocation lines was controlled by major genes and it should be regarded as the important resistant origin to be used purposefully in breeding resistant cultivars against stripe rust.