Parentage analysis of huyou (Citrus changshanensis) based on internal transcribed spacer sequences

Huyou (Citrus changshanensis K. S. Chen et C. X. Fu) citrus is a natural hybrid with unidentified parents. Previous studies have hypothesized that pummelo and sweet orange might be parents, which contradicts the higher freezing resistance of huyou citrus than both the assumed parents. In this study,...

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Bibliographic Details
Published in:Plant breeding 2006-10, Vol.125 (5), p.519-522
Main Authors: Xu, C.J, Bao, L, Zhang, B, Bei, Z.M, Ye, X.Y, Zhang, S.L, Chen, K.S
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Citrus
Citrus aurantium
Citrus changshanensis
Citrus grandis
Citrus maxima
Citrus reticulata
Citrus sinensis
Citrus unshiu
Fundamental and applied biological sciences. Psychology
Generalities. Genetics. Plant material
Genetics and breeding of economic plants
internal transcribed spacer sequence
Origin, evolution, domestication
parentage analysis
phylogenetic analysis
Plant material
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Summary:Huyou (Citrus changshanensis K. S. Chen et C. X. Fu) citrus is a natural hybrid with unidentified parents. Previous studies have hypothesized that pummelo and sweet orange might be parents, which contradicts the higher freezing resistance of huyou citrus than both the assumed parents. In this study, the parental analysis was based on internal transcribed spacer (ITS) sequences of huyou as well as six candidate parents: three mandarins, one sweet orange, one sour orange and one pummelo. Two different ITS1 sequences, with eight variable sites within the 250 bp region, were observed for huyou, which were identical only to that of sour orange and pummelo, respectively. The results indicated that huyou is most likely a hybrid between sour orange and pummelo. In addition, the application of ITS1 sequences in the phylogenetic analysis of citrus was discussed.
ISSN:0179-9541
1439-0523
DOI:10.1111/j.1439-0523.2006.01263.x