Reference "Polymorphism at the esterase isozyme locus Est10 associated with phylogenetic differentiation in rice"

Reference ID

8139

Title

Polymorphism at the esterase isozyme locus Est10 associated with phylogenetic differentiation in rice

Source

Genes & genetic systems, 2003, vol. 78, pp. 285-290

Authors (6)

Cai-H	Zhang-Y
Xu-J	Zhu-L
Cheng-K	Wang-X

Abstract

A new esterase isozyme locus, Est10, with 6 alleles including the null form, has
been found in rice by using polyacrylamide gel electrophoresis. Thirty F(2)
populations of all possible combinations between 5 different band morphs were
studied. The segregation pattern indicated that bands 1, 2, 3, 4, and the null
form (0) were allelic with each other. The alleles of Est10 were distributed at
different frequencies among different varietal groups of rice and also between
cultivated rice and its wild relatives (Oryza rufipogon Griff.). Alleles 1 and 2
were frequently found in Japonica and Indica types, respectively. Allele 3
showed a high frequency in Aus and Boro, both Indica types cultivated in South
Asia. Allele 4 was frequent in wild rice O. rufipogon. Judging from the linkage
between Est10 and RFLP marker RG220 and isozyme marker Est5, Est10 is located on
chromosome 1. The importance of this locus in evolutionary studies of rice is
discussed.