Abstract
Diversity and genetic relationships were investigated in 19 trifoliata oranges ((Poncirus trifoliata (L.) Raf) and their 27 hybrids including 20 citranges (P. trifoliata X Citrus sinensis), five citrumelos (P. trifoliata X C. paradisi) and two citremons (P. trifoliata X C. limon) based on inter- simple sequence repeat (ISSR) markers. Twelve ISSR primers produced a total of 120 fragments and 82 of them were polymorphic (68%). The unweighted pair group method arithmetic average (UPGMA) analysis as assessed with ISSR data demonstrated that the accessions had a similarity range from 0.67 to 1.00. In the dendrogram there were three main groups including trifoliata, citremon and citrange- citrumelo groups. The trifoliata orange, citrange, citrumelo and citremon groups were separated. The citrumelo group was nested in the citrange branch. Genetic diversity among the trifoliata accessions was low probably because of their mutation origin. However all trifoliata accessions were distinguished except for two of them. The citrange group had higher polymorphism than the other trifoliata hybrids. Our study indicated that ISSR markers were useful to determine genetic diversity of related citrus groups such as trifoliata oranges and their intergeneric hybrids.
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Claims 9
Claim · model-written summary
ISSR primers produced 120 fragments, of which 82 were polymorphic.
Verbatim
e0“Twelve ISSR primers produced a total of 120 fragments and 82 of them were polymorphic (68%).”
t0“trifoliata oranges”
Claim · model-written summary
ISSR similarity among the accessions ranged from 0.67 to 1.00.
Verbatim
e0“The unweighted pair group method arithmetic average (UPGMA) analysis as assessed with ISSR data demonstrated that the accessions had a similarity range from 0.67 to 1.00.”
t0“trifoliata oranges”
Claim · model-written summary
The dendrogram formed three main groups.
Verbatim
e0“In the dendrogram there were three main groups including trifoliata, citremon and citrange- citrumelo groups.”
Claim · model-written summary
Trifoliata orange, citrange, citrumelo and citremon groups were separated.
Verbatim
e0“The trifoliata orange, citrange, citrumelo and citremon groups were separated.”
Claim · model-written summary
The citrumelo group nested within the citrange branch.
- Taxon
- citrumeloCitrus ×paradisi ×Citrus trifoliatae0
- Outcome
- nested in the citrange branche0
Verbatim
e0“The citrumelo group was nested in the citrange branch.”
Claim · model-written summary
Genetic diversity among trifoliata accessions was low.
Verbatim
e0“Genetic diversity among the trifoliata accessions was low probably because of their mutation origin.”
Claim · model-written summary
All but two trifoliata accessions were distinguishable.
Verbatim
e0“However all trifoliata accessions were distinguished except for two of them.”
Claim · model-written summary
Citrange had higher polymorphism than other trifoliata hybrids.
Verbatim
e0“The citrange group had higher polymorphism than the other trifoliata hybrids.”
Claim · model-written summary
ISSR markers were useful for determining diversity among related citrus groups.
Not reportedComparator
Verbatim
e0“Our study indicated that ISSR markers were useful to determine genetic diversity of related citrus groups such as trifoliata oranges and their intergeneric hybrids.”