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首页> 外文期刊>Journal of Botany >Study of Flowering Pattern inSetaria viridis, a Proposed Model Species for C4 Photosynthesis Research
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Study of Flowering Pattern inSetaria viridis, a Proposed Model Species for C4 Photosynthesis Research

机译：拟南芥C4光合作用的拟议树种-马尾草的花型研究

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Green foxtail millet (Setaria viridis) has NADP-ME type of C4 photosynthesis. Because of its short life cycle, small genome size of ~515 Mb, small plant stature, high number of seed set, simple growth requirements, and wide adaptability, this diploid (2n=18) weed is proposed to be a model species for the study of C4 photosynthesis. It is also a representative of bioenergy grasses and a model for genetic study of invasive weeds. Despite having all traits of a model species, it is difficult to cross-pollinate because its flowering behavior is not well studied. We used time lapse digital recording to study the flowering time and pattern along a single panicle. We found that flowering inSetariawas triggered by the darkness of the night and when the temperature was lower than 35°C. The anthesis of all the spikelets in a panicle took up-to three nights flowering from 9:30 pm to 10:00 am in the morning. Each spikelet has three phases of anthesis during which pollination occurs. A spikelet remains open for less than three hours. The pollination time for each spikelet is less than 60 minutes. Information from this study will facilitate the geneticists and plant breeders to plan for efficient crossing ofSetaria.
机译：绿狐尾小米（Setaria viridis）具有NADP-ME类型的C4光合作用。由于其生命周期短，基因组尺寸小至515 Mb，植物身材矮小，种子集数量高，生长要求简单且适应性广，因此该二倍体（2n = 18）杂草被认为是该植物的典范物种。 C4光合作用的研究。它也是生物能草的代表，也是入侵性杂草的遗传研究模型。尽管具有模型物种的所有特征，但由于对其开花行为的研究不足，因此很难进行异花授粉。我们使用时间流逝数字记录来研究单个穗上的开花时间和花型。我们发现，Setaria的开花是由夜晚的黑暗和温度低于35°C触发的。穗中所有小穗的花期从晚上9:30到早晨10:00最多花了三个晚上。每个小穗具有花期的三个阶段，在此阶段发生授粉。小穗保持开放少于三个小时。每个小穗的授粉时间少于60分钟。该研究的信息将有助于遗传学家和植物育种者计划有效地穿越狗尾草。

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