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A quinclorac sensitive lethality rice mutant: its discovery, genetics and potential application
Author(s) -
Peng H.,
Zhang J.,
Xie Q.
Publication year - 2008
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.2008.01501.x
Subject(s) - mutant , biology , hybrid , oryza sativa , lethality , botany , genetic analysis , gene , genetics
In this study, we reported a quinclorac‐sensitive rice natural mutant M4017, derived from an indica restorer line 4017 of three‐line hybrid. The mutant could be killed at three‐leaf stage by quinclorac at 175 mg/l or higher, a dosage that is recommended for monocot herbs control. The mutant at flowering stages can also be effectively killed by quinclorac at 1.25–1.50 g/l or higher, which is safe for its F 1 hybrids and all other normal varieties. Genetic analysis, using the F 1 , F 2 and BC 1 populations derived from this mutant and other often‐used varieties, revealed that quinclorac sensitivity/lethality was controlled by a single recessive gene, which was named quin1 . This mutant has a potential application in false hybrid seed removal or mechanized production of hybrid seeds.