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Wheat Information Service
Number 86: 43-45(1998)
Research information

Crossability percentages of bread wheat landraces from Shandong Province, China with rye

Qi Zeng-Jun, Wang Hong-Gang and Li Qing-Qi

Department of Agronomy, Shandong Agricultural University, Taian City, Shandong Province, 271018, P. R. China


The previous studies (Luo et al. 1992; 1993a; 1993b; 1994) reported the crossability percentages of landraces from Sichuan, Shanxi, Henan, the Tibet Region, Hunan and Hubei, China and their geographical distribution, and revealed that landraces with high crossability widely exist in the regions of Sichuan, Shanxi, Henan, Hunan and Hubei, but rare in the Tibet Region. Our paper reports the crossability percentages of bread wheat landraces from Shandong province in eastern China with rye and their geographical distribution.

Sixty-five accessions of wheat landraces (Triticum aestivum L.) were kindly provided by Mr. Ma Lishen of Crop Institute of Shandong Academy of Agricultural Sciences, rye (Secale cereale L.) was used as male tester in the crosses. In each wheat material about 200 florets were emasculated and pollinated by brush with large amount of fresh pollen of rye at the appropriate stage of stigma receptivity at Taian farm in Shandong Province, China in 1993. The crossability percentage was expressed in terms of the % seed-set out of the florets pollinated in each cross. The t-test were used to detect the difference of crossability between a wheat landrace and Chinese Spring.

Of 65 bread wheat landraces from Shandong Province, 10 showed high crossability (50%) with rye and 4 of them had similar crossability (approximately 86.4%) to Chinese Spring, 22 presented lower crossability (>=5% <50%) than Chinese Spring did, and 33 landraces had no or very low crossability (0% <5%) with rye (see Table 1). The landraces with high crossability or similar crossability to Chinese Spring occurred widely in the province (Fig. 1).

From the investigation, we found that the geographical distribution of high crossability landraces in Shandong Province is continuous with that in Sichuan, Shanxi, Henan, Hunan and Hubei (Luo et al. 1992; 1993a; 1994), and no landraces had higher crossability than Chinese Spring did, only 4 showed similar crossability to Chinese Spring in this area.


References

Luo MC, Yen C and Yang JL (1992) Crossability percentages of bread wheat landraces from Sichuan Province, China with rye. Euphytica 61: 1-7.

Luo MC, Yen C and Yang JL (1993a) Crossability percentages of bread wheat landraces from Shaanxi and Henan Provinces, China with rye. Euphytica 67: 1-8.

Luo MC, Yen C and Yang JL (1993b) Crossability percentages of bread wheat collections from Tibet, China with rye. Euphytica 70: 127-129.

Luo MC, Yen C and Yang JL (1994) Crossability percentages of bread wheat landraces from Hunan and Hubei provinces, China with rye. Wheat Inf Serv 78: 34-38.

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