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- W2279157265 abstract "Wheat is the second most important food crop after rice in China. Two types are grown: winter and spring wheat. The average annual sown area is approximately 35 million hectares and yearly output is approximately 120 million tonnes. Collection, conservation, research and utilisation of wheat germplasm resources play an important role in wheat breeding and production in China. By June 1995,35,466 accessions of wheat had been stored in the Chinese National Genebank for long term conservation. Of these, 22,070 accessions are from China. A total of 2541 rare species, relatives and special genetic materials are also conserved in the long term genebank. Studies of Chinese wheat germplasm showed great genetic diversity. Generally speaking, Chinese wheat accessions possess characteristics of early maturing, multiflorets, high grain number (seediness) and wide adaptability. Approximately 7000 improved varieties have been developed using Chinese wheat genetic resources. This has enabled mean yields to increase from 637.5 kg ha−1 in 1949, to 3519 kg ha−1 in 1993. The newly developed K-type wheat hybrid 901 produced an average yield of over 9000 kg ha−1. An active international exchange of crop germplasm is considered of paramount importance. The wheat landrace Chinese Spring has been widely used in genetic research throughout the world. Recently, much effort has been made in promoting international exchange of crop germplasm. A Catalogue of Chinese Cereal Crop Germplasm for International Exchange, including 410 wheat accessions, was compiled in early 1994. Copies were provided to foreign scientists and plant breeders from February 1994 to February 1996." @default.
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- W2279157265 date "1997-01-01" @default.
- W2279157265 modified "2023-09-27" @default.
- W2279157265 title "Conservation, research, utilisation and international exchange of wheat germplasm in China" @default.
- W2279157265 cites W322184589 @default.
- W2279157265 doi "https://doi.org/10.1007/978-94-011-4896-2_53" @default.
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