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

Mapping of QTLs underlying flowering time in sorghum [Sorghum bicolor (L.) Moench].
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DOI:
10.1270/jsbbs.62.151
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发表时间:
2012-06
期刊:
影响因子:
2.4
通讯作者:
Okuno K
Okuno K
中科院分区:
农林科学3区
文献类型:
--
作者:
El Mannai Y;Shehzad T;Okuno K

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由于开花时间的光周期调节对作物产量至关重要,因此被认为是高粱育种计划中的一个重要性状。在这项研究中,使用源自日本的晚花品种 Kikuchi Zairai 和源自埃塞俄比亚的早花品种 SC112 杂交的 F2 群体检测了开花时间的数量性状基因座。 F2植物与其亲本一起在自然日长和12小时日长下生长。使用 213 个简单序列重复标记构建了两个连锁图谱。在自然日长下生长的F2植物中鉴定出9个控制开花时间的数量性状位点,而在12小时日长下鉴定了7个QTL。在两种日长条件下共有五个控制开花时间的QTL。
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.
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