Changes in flowering and fruiting of Habanero pepper in response to higher temperature and CO 2
Changes in flowering and fruiting of Habanero pepper in response to higher temperature and CO 2
复制标题
哈瓦那辣椒开花结果的变化对较高温度和CO 2 的响应
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
R. Orellana
中科院分区：
文献类型：
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作者：
R. Garruña;A. Canto;Javier O. Mijangos;Ignacio Islas;Luís;R. Orellana
全球气候变化可能会增加最高气温和大气CO2浓度。高温会改变植物的繁殖物候，导致开花提前或推迟。大气中高浓度的CO2对植物有积极的促进作用，产生更高的生物量和花的数量.研究了高温（试验1）和大气CO2浓度（试验2）对热带作物辣椒（Capsicum chinense Jacq.）生殖物候的影响。在每个实验中使用三个生长室。在实验1中，在每个室中使用不同的昼夜最高温度（30、35和40 oC）。在实验2中，昼夜最高温度设定为30°C，每个室内使用不同的大气CO2浓度（380、760和1140 μmol mol-1）。相对湿度，最大光合光子通量密度（PPFD）和光周期是相同的，在所有的两个实验室。变量为开花天数、结果天数、花产量、花败育、果实产量和花形态性状。最高温度从30 °C升高到35°C，开花提前6天，但在35°C下，结果比30°C下晚27天。当比较在380 μmol mol-1 CO2下生长的植物时，在1140 μmol mol-1下生长的植物提前18天开花，提前37天结果。最高温度和CO2浓度对花败育和果实产量均有显著影响.总的来说，哈瓦那辣椒负响应较高的日最高温度和积极的高CO2浓度。
Global climate change is likely to increase maximum temperatures and atmospheric CO 2 concentrations. High temperatures can alter plant reproductive phenology, resulting in earlier or later flowering. High atmospheric CO 2 levels have a positive fertilizing effect in plants, producing higher biomass and flower number. The objectives of this research work were to quantify the effects of higher maximum temperature (Experiment 1) and atmospheric CO 2 concentration (Experiment 2) on reproductive phenology in the tropical crop Habanero pepper (Capsicum chinense Jacq.). Three growth chambers were used in each experiment. In Experiment 1, different diurnal maximum temperatures (30, 35 and 40oC) were used in each chamber. In Experiment 2, diurnal maximum temperature was set at 30°C and different atmospheric CO 2 concentrations (380, 760 and 1140 µmol mol -1 ) were used in each chamber. Relative humidity, maximum photosynthetic photon flux density (PPFD) and photoperiod were the same in all chambers of both experiments. Variables were flowering days, fruiting days, flower production, flower abortion, fruit production and flower morphology traits. A maximum temperature increase from 30 to 35°C caused flowering to be 6 days earlier, but at 35°C fruiting was 27 days later than at 30°C. When comparing plants grown at 380 µmol mol -1 CO 2 , those grown at 1140 µmol mol -1 flowered 18 days earlier and fruited 37 days earlier. Both maximum temperature and CO 2 concentration had significant effects on flower abortion and fruit production. Overall, Habanero pepper responded negatively to higher diurnal maximum temperatures and positively to higher CO 2 concentrations.