Effect of End-of-day far-red light exposures on fertility alteration and flowering in photoperiod-sensitive genic male-sterile rice |
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Authors: | Wang Wei |
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Affiliation: | (1) Department of Biology, Xiamen University, 361005 Xiamen, China |
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Abstract: | The rice photoperiod-sensitive genic male-sterile mutant (PGMR) is sterile under long days, but fertile in short days. Phytochrome is involved in the photoperiod-induced male-sterile process. To investigate the mechanisms, of phytochrome action in PGMR, end-of-day (EOD) experiments were carried out. Flowering in PGMR was delayed considerably by EOD far-red light exposures following a short day of 10 hr, whereas its fertility decreased to the same extent as the original line. This result suggests that photoperiod response mediating fertility alteration in PGMR somewhat differed from that in flowering,i.e., fertility alteration and flowering might be under the separate phytochrome signaling control. |
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Keywords: | Flowering Male sterility Oryza sativa Photoperiod response |
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