Mapping of QTLs underlying flowering time in sorghum [Sorghum bicolor (L.)Moench]

Mannai, Y. E. and Shehzad, T. and Okuno, K. (2012) Mapping of QTLs underlying flowering time in sorghum [Sorghum bicolor (L.)Moench]. Breeding Science, 62 (2). pp. 151-159.

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Due to its critical importance in crop yield, the photoperiodic regulation of flowering time is considered an important trait in sorghum breeding programs. In this study, quantitative trait loci for flowering time were detected using an F2 population derived from a cross between Kikuchi Zairai, a late-flowering cultivar originating from Japan and SC112, an early-flowering cultivar originating from Ethiopia. F2 plants were grown with their parents under a natural day length and a 12 h day length. Two linkage maps were constructed using 213 simple sequence repeats markers. Nine quantitative trait loci controlling flowering time were identified in F2 plants grown under a natural day length, whereas 7 QTLs were identified under a 12 h day length. Five QTLs controlling flowering time were shared under both of the day length conditions.

Item Type: Article
Uncontrolled Keywords: sorghum, flowering time, day length, quantitative trait loci, mapping.
Author Affiliation: Laboratory of Plant Genetics and Breeding Science, Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
Subjects: Crop Improvement
Divisions: Sorghum
Depositing User: Mr Siva Shankar
Date Deposited: 01 Aug 2012 10:01
Last Modified: 01 Aug 2012 10:02
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