Pedigree and Germplasm Base of Inbreds of the Lancaster Heterotic Group of Maize in China

作     者：ZHENG Da-hao, LI Yan-ru, JIN Feng-xue and JIANG Ji-jian(Department of Agronomy, Agricultural College, Yanbian University, Jilin 133400, P.R.China) 

作者机构：Department of Agronomy Agricultural College Yanbian University Jilin 133400 P. R. China 

出 版 物：《Agricultural Sciences in China》 (中国农业科学（英文版）)

年 卷 期：2002年第1卷第6期

页      面：595-604页

学科分类：09[农学] 0901[农学-作物学] 

主　　题：Maize Lancaster Heterotic group Inbred Germplasm base 

摘      要：Lancaster Surecrop (LSC) germplasm in inbreds of the Lancaster heterotic group in China was mainly provided by the two inbreds Mol7 and Oh43. Furthermore, the source of LSC germplasm was severely restricted in two inbreds, C103 and Oh40B. The contents of LSC germplasm are 50% or less in inbreds of the group, with the existence of more than 20 non-LSC germplasms that results in the abundant genetic diversity in the group. Most inbreds of Mol7 subgroup contain 25% - 50% LSC, 12.5% - 25% Reid Yellow Dent (RYD) and 12.5%- 25% Iowa Goldmine germplasms in the ratio of 2:1:1, and most inbreds of Zi330 subgroup contain 12.5% - 25% LSC, 6.25% - 12.5% RYD, 6.25% - 12.5% Minnesota # 13 and 25% - 50% Creole germplasms in the ratio of 2:1:1 4. AH the facts indicated that the germplasm base of the Lancaster heterotic group has stupendously changed and evolved away from actual LSC germplasm.