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摘要:
A longer stem elongation phase (from the terminal spikelet-TS to the anthesis-ANT phases) increases grain production due to an increase in spikelet fertility. However, the mechanism behind the greater number of fertile flowers that occur when the duration of stem elongation is modified by photoperiod and vernalization is not fully understood. The goal of this study was to investigate the effect of combinations of photoperiod and vernalization on the duration of stem elongation and spikelet fertility in wheat. Thus, a greenhouse experiment was performed by subjecting 13 wheat genotypes to two vernalization regimes (V0—non-vernalized plants and V40—plants with 40 vernalization days) and to two photoperiod regimes (NP—natural and NP + 6—photoperiod extended by six hours), during the stem elongation phase. The natural photoperiod increased the spikelet fertility of eight cultivars without a corresponding increased duration of the TS-ANT phase, suggesting the existence of a direct effect of photoperiod on increased spikelet fertility. Vernalization increased the duration of the TS-ANT phase, without influencing spikelet fertility. There was genetic variability in the responses to photoperiod and vernalization.
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篇名 Influence of Vernalization and Photoperiod on the Duration of Stem Elongation and Spikelet Fertility in Wheat
来源期刊 农业科学(英文) 学科 农学
关键词 Double RIDGE Terminal SPIKELET ELONGATION
年,卷(期) nykxyw_2014,(14) 所属期刊栏目
研究方向 页码范围 1547-1557
页数 11页 分类号 S5
字数 语种
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研究主题发展历程
节点文献
Double
RIDGE
Terminal
SPIKELET
ELONGATION
研究起点
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研究分支
研究去脉
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相关学者/机构
期刊影响力
农业科学(英文)
月刊
2156-8553
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
1151
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0
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