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Wheat Information
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Number 78: 34-38 (1994)
Crossability
percentages of bread wheat landraces from Hunan and Hubei provinces,
China with rye
Luo M. C.*, Yen C. and Yang J. L.
Triticeac Research Institute, Sichuan Agricultural University,
Dujiangyan City, Sichuan 611830, P. R. China
Introduction
Our previous papers (Luo et al. 1992, 1993a, 1993b) reported the
crossabilities of landraces from Sichuan, Shaanxi and Henan Provinces
and the Tibet Region, China and their geographical distribution, and
revealed that landraces with high crossability widely exist in the
regions of Sichuan, Shaanxi and Henan, but rare in Tibet region. As
the extendence of the previous ones, the present paper reports the
crossabilities of landrace accessions from Hunan and Hubei Provinces,
China.
Materials and methods
Ninety-four accessions of wheat landraces (Triticum aestivum
L.) were grown from seeds, of which 44 landraces from Hunan
Province and 50 landraces from Hubei Province, China were kindly
provided by Mr. Shiqiang Yun of Crop Institute of Hunan Academy of
Agricultural Sciences and Mr. Qichang Zhang of Institute of
Modernization of Hubei Academy of Agricultural Sciences,
respectively. The inbred line of Qinling rye (Secale cereale
L.) was used as male tester in the crosses. The emasculation and
pollination techniques were as reported earlier (Luo et al. 1992).
Thirty days after pollination, the number of florets with and without
seeds were recorded for each spike. The data are expressed as the
percentage of successful crosses over the total number of florets
pollinated. The t-test was adopted to detect the crossability
differences between a wheat landrace and the control (Chinese
Spring).
* The present address:
Department of Agronomy and Range Science, University of California,
Davis, CA 95616, U.S.A.
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