TY  - JA
AU  - Han Li-ming
AU  - Yang Fang-Ping
AU  - Xianchun Xia
AU  - Jun Yan
AU  - Yong Zhang
AU  - Yanying Qu
AU  - Zhongwei Wang
AU  - He Zhonghu
TI  - Distribution of genes related to plant height, kernel weight and disease resistance among wheat cultivars from major countries
SN  - 1009-1041
PY  - 2011///
CY  - China
PB  - CNKI
KW  - Wheat
KW  - AGROVOC
KW  - Dwarfism
KW  - Genes
KW  - Kernels
KW  - Genetic markers
N1  - Peer-review: No - Open Access: No; Peer review
N2  - Using the molecular markers for dwarfing genes (Rht-B1b and Rht-D1b) and kernel weight related genes (TaCwi-A1a and Hap-6A-A) and Lr34/Yr18/Pm38, the distributions of these genes were detected among 745 cultivars from 21 major wheat-growing countries. The results indicated that: (1) The frequencies of Rht-B1b and Rht-D1b in 745 cultivar were 42.1% and 28.7%, respectively, varying much in different wheat-growing countries. Generally, cultivars from the same countri usually carried only one of Rht-B1b and Rht-D1b, frequencies only from Italy and Australia were higher for both Rht-B1b and Rht-D1b, which in high latitude areas such as Canada and Russia were lower due to less requirement for plant height. (2) TaCwi-A1a allele was widely distributed in 21 countries with a total frequency of 78.4%, and cultivars from different countries possessed all higher frequency of TaCwi-A1a except for Japan (50.0%), Germany (45.3%) and Chile (48.8%). The 29.3% of cultivars carried Hap-6A-A allele at TaGW2-6A locus, mainly distributing in spring and weak winter wheat, whereas Hap-6A-G was mainly present in winter and stron winter cultivars. (3) The 22.1% of cultivars had Lr34/Yr18/Pm38 allele, with higher frequency in USA (18.5%), Ukraine (28.6%), Russia (26.1%), Iran (20.0%), Turkey (34.8%), Hungary (50.0%), Bulgaria (38.9%), Romania (87.0%), Japan (80.0%), Canada (34.6%) and Australia (44.6%). (4) The molecular markers CWI 21 and CWI 22 for TaCwi-A1 can well differentiate TaCwi-A1a and TaCwi-A1b alleles, while the CAPS marker of TaGw2-6A can also be used for kernel weight selection due to its ability of discriminating Hap-6A-A and Hap-6A-G with great accuracy and repeatibility. The information is very crucial for use of exotic germplasm in Chinese wheat breeding program
UR  - https://hdl.handle.net/20.500.12665/1633
T2  - Journal of Triticeae Crops
ER  -