高CO2浓度对超级稻稻穗不同位置籽粒结实能力和品质性状的影响

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大气CO2浓度已从工业革命前的280μmol·mol-1不断增高,目前已突破400μmol·mmol-1大关,预计本世纪中叶将达到550 μmol·mol-1。水稻是最重要的粮食作物之一,大气CO2浓度对水稻结实能力和品质性状的影响已有很多研究,但这种影响是否与稻穗上的着生部位有关?品种间有什么差异?均不清楚。为此,本研究利用稻田FACE(Free Air CO2 Enrichment)平台,模拟2050年大气CO2浓度,以超级稻Y两优900(YLY900)和南粳9108(NJ9108)为供试材料,
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