Breeding and study of two new photoperiod- and thermo-sensitive genic male sterile lines of polyploid rice (Oryza sativa L.).
Sci Rep
; 7(1): 14744, 2017 11 07.
Article
in En
| MEDLINE
| ID: mdl-29116179
ABSTRACT
Male sterile lines play an important role in the utilization of heterosis. To explore and exploit the heterosis of polyploid hybrid rice, two photoperiod- and thermo-sensitive genic male sterile lines of polyploid rice, PS006 and PS012, were bred via chromosome doubling, complex hybridization and self-breeding. The characteristics of these two lines, including the agronomic traits, growth, development, fertility transformation and combining ability, were investigated. Both lines had good agronomic characteristics and flowering habits, a high outcrossing rate, obvious fertility alterations and good combining abilities. Their hybrids showed strong heterosis and great potential for increasing rice productivity and quality. The new polyploid rice photoperiod- and thermo-sensitive genic male sterile lines will provide material for further research into polyploidy and hybrid vigour in rice and promote the exploitation of polyploid hybrid rice.
Full text:
1
Database:
MEDLINE
Main subject:
Pollen
/
Polyploidy
/
Oryza
/
Temperature
/
Photoperiod
Type of study:
Diagnostic_studies
Language:
En
Year:
2017
Type:
Article