INHERITANCE AND LINKAGE RELATIONSHIPS OF ISOZYME LOCI IN CUCUMBER (CUCUMIS-SATIVUS L)

被引:38
作者
KNERR, LD [1 ]
STAUB, JE [1 ]
机构
[1] UNIV WISCONSIN, DEPT HORT, USDA ARS, MADISON, WI 53706 USA
关键词
CUCUMBER; GENE MAPPING; ISOZYMES; SEGREGATION; STARCH-GEL ELECTROPHORESIS;
D O I
10.1007/BF00224003
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Genetic analyses were conducted among 18 provisionary isozyme loci in Cucumis sativus L. Fourteen loci demonstrated simple Mendelian inheritance while observed variation at four loci (Gpi2, Gr2, Pgm3, Skdh2) was determined not to have a predictable genetic basis. Joint segregation analyses among the 14 genetically predictable polymorphic loci resulted in the assignment of 12 loci to four linkage groups. Linkage groups contain the following loci: (1) Gr1, Pgm1, Idh, Pgd1; (2) Pep-pap, Mdh2, Mdh3, Gpit1; (3) Pep-la, Per4; (4) Pgd2, G2dh. Mpi2 and Mdh1 segregated independently. Recombination fractions for linked loci ranged between 0.051 (Pgm1-Idh) to 0.385 (Pep-la-Per4). Some practical applications of isozyme marker loci for cucumer improvement are discussed.
引用
收藏
页码:217 / 224
页数:8
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