Mechanisms of Photoperiod in Regulation of Rice Flowering
International Journal of Genetics and Genomics
Volume 2, Issue 1, February 2014, Pages: 1-5
Received: Feb. 6, 2014; Published: Mar. 10, 2014
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Authors
Abdulrahman Mahmoud Dogara, Department of Biological science, Kaduna State University, Kaduna State, Nigeria
Salisu Muhammad Tahir, Department of Biological science, Kaduna State University, Kaduna State, Nigeria
Idris Shehu, Department of Microbiology, Kaduna State University, Kaduna State, Nigeria
Mustapha Abbah, Department of Micro Biology, Bauchi State University, Gadau, Nigeria
Ummar Shitu, Department of Biology, Isah Kaita College of Education, katsina State, Nigeria
Zainab Idris Ladidi, Department of Biochemistry, Bauchi State University, Gadau, Nigeria
Aisha Ishaq Jumare, Department of Biological science, Kaduna State University, Kaduna State, Nigeria
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Abstract
A study on the photoperiodic control of flower in rice is advancing and rice has become an example of short day plant. Many genes used in flowering time determination in rice have been identified by many methods. The conclusion from these molecular studies is a remarkable conservation of genes which play an important role in the control of flowering time in rice. The rice photoperiod sensitivity gene Hd3a was originally detected as a heading date related quantitative trait locus found on chromosome 6 of rice. High resolution linkage mapping of Hd3a was carried using a huge segregating population derived from advanced backcross progeny between a japonica variety, Nipponbare, and an indica variety, Kasalath. Researchers revealed that there are three (3) pathways for the day length regulation of flowering in rice, short day activation pathway and long day suppression pathway lastly the long day activation pathway. Some genes where used in multiple pathways and others are specific to a particular pathway. There regulation also depends on the developmental stages. Rice may be an ideal plant to study the night break effect on flowering. In the near future there would be a need for better understanding of the control of flowering in rice at the genetic level.
Keywords
Photoperiod, Heading Date, Short Day Plant, Long Day Plant
To cite this article
Abdulrahman Mahmoud Dogara, Salisu Muhammad Tahir, Idris Shehu, Mustapha Abbah, Ummar Shitu, Zainab Idris Ladidi, Aisha Ishaq Jumare, Mechanisms of Photoperiod in Regulation of Rice Flowering, International Journal of Genetics and Genomics. Vol. 2, No. 1, 2014, pp. 1-5. doi: 10.11648/j.ijgg.20140201.11
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