TESTING WHEAT CULTIVARS INTRODUCED FROM THE U.S.FOR RESISTANCE TO LEAF RUST OF WHEAT AND COMPORISON OF VIRULENCE OF PUCCINIA RECONDITA F.SP. TRITICI BETWEEN U.S.A.AND CHINA

doi:10.7668/hbnxb.1986.04.006

Abstract

Abstract: Thirteen rust resistant cultivars were introduced from U. S. and tested for leaf rust resistance in seedling stage in greenhouse of Hebei Agricultural University with 4 Chinese races 360, 376, 377 and 60 of P. recondita respectively and tested for resistance to leaf and stripe rust in adult stage in field in 1981. The same cultivars were tested for leaf rust resistance with 12 U.S. cultures namely, PRTUS 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13 and 19 respectively in seedling stage in greenhouse of Kansas State University in 1982.The result of seedling tests showed there were 3 cultivars, Kans 63326, STW 646407 and II-l 1996-4R-SM-1R, were resistant to all the Chinese races. They were also resistant to most of the U.S. cultures though none of a cultivars were resistant to all the U.S. cultures.Comparison of the virulence between Chinese and U. S. cultures further showed that cultivars NB 61975, STW 597643 and NB 66523 were susceptible to all the cultures of both countries. There were few cultivars such cas LA 1415, STW 597725, and STW 597947, were resistant to a few U. S. cultures, but were susceptible to all the Chinese races.The result of field test when inoculated with races 19 and 21 of P.strii-formis showed the cultivars NB 61975, NB 66523 and STW 597944 were immune and NB 61977 and II-l 19966-4R-SM-1R were highly resistant to stripe rust.

Key words: Wheat, Testing to rust resistant, Virulence of leaf rust

Zhu Zhiyu, Wang Huanru, Yuan Shoukang, Fu Qiufang. TESTING WHEAT CULTIVARS INTRODUCED FROM THE U.S.FOR RESISTANCE TO LEAF RUST OF WHEAT AND COMPORISON OF VIRULENCE OF PUCCINIA RECONDITA F.SP. TRITICI BETWEEN U.S.A.AND CHINA[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1986, 1(4): 37-42. doi: 10.7668/hbnxb.1986.04.006.

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