[Influence of genetic background of photoperiodic response on expression of short photoperiod sensitive male sterility in rice].
The photoperiodic response of F1 and its parents was analyzed, and the photoperiodic response and short photoperiod sensitive male sterility of F2 progenies were studied in this paper. The results showed that the strong response was dominant over the weak response to photoperiod. The photoperiodic response of plants with short photoperiod sensitive male sterility in F2 was above medial degree(the rate of heading acceleration > 15%). Photoperiodic response showed a positive correlation with short photoperiod sensitive male sterility. The main sterility genes of Yid1s and Yid2s were allelism. It can be inferred that the short photoperiod sensitive male sterile gene might be expressed upon the presence of the photoperiodic response genes, and that the short photoperiod sensitive male sterility of plants with the same genes could differ in their reproductive expressions, not because of the changes of the genes, but the difference in genetic backgrounds of photoperiodic response.
Lu
Y
Y
South China Agricultural University, Guangzhou 510642.
Wan
B
B
Chen
X
X
Peng
H
H
Liang
K
K
D005298:Fertility / Q000235:genetics; D008027:Light; D012275:Oryza / Q000235:genetics* / Q000502:physiology / Q000528:radiation effects; D017440:Photoperiod