GrainGenes Reference Report: TAG-102-1236
Reference
TAG-102-1236
Title
Genetic dissection of heading time and its components in rice
Journal
Theoretical and Applied Genetics
Year
2001
Volume
102
Pages
1236-1242
Author
Zhou Y
[ Show all 6 ]
Abstract
Summary: Heading time (HT, days from sowing to heading) is an important agronomic trait in rice. Physiologically, HT can be divided into two stages: vegetative growth time (VGT) and reproductive growth time (RGT). A number of studies for mapping QTLs conferring HT in rice have been reported, but none of them has tried to map HT-related QTLs based on their component traits (VGT and RGT). The present study aims to map HT-related QTLs in rice according not only to the performance of HT, but also the performances of VGT and RGT. A method based on an empirical equation of leaf age growth was developed to partition HT into VGT and RGT. An indica/japonica DH population and a corresponding RFLP map were constructed for the study. The methods of composite interval mapping and multiple-trait composite interval mapping were used to map QTLs. A total of 19 QTLs were mapped on all 12 rice chromosomes with the exception of chromosomes 1 and 4. Results showed that: (1) more QTLs could be detected by partitioning HT into VGT and RGT; (2) the genetic variation of HT was largely attributed to VGT; and (3) the two component stages were relatively independent in terms of QTL effects, suggesting that the ratio between VGT and RGT could be genetically adjusted without apparently altering HT. Total number of records in report: 147
External Databases
http://link.springer-ny.com/link/service/journals/00122/bibs/1102008/11021236.htm
Keyword
age
[ Show all 37 ]
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: TAG-102-1236
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||