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Tuber yield and quality responses of potato to moderate temperature increase during Tuber bulking under two water availability scenarios
Field Crops Research ( IF 5.6 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.fcr.2020.107786
Andrea Ávila-Valdés , Muriel Quinet , Stanley Lutts , Juan Pablo Martínez , X. Carolina Lizana

Abstract Potato is one of the most important food crops worldwide, having excellent performance in temperate regions, with cool nights and adequate water supply. In southern Chile, an increase in air temperature between 1−5 °C and a decrease in rainfall by 30–40 % are expected due to climate change. The objective of present study was to evaluate the effect of moderate high temperatures (+3.1 to +6.9 °C) during tuber bulking on yield and quality properties of Chilean native and commercial genotypes of potato, under different water availability scenarios. Experiments were carried out under field conditions during two growing seasons. Four treatments were applied: (i) T0H0, at ambient temperature under rainfed conditions; (ii) T1H0, at high temperature under rainfed conditions; (iii) T0H1, at ambient temperature under irrigation conditions; (iv) T1H1, at high temperature under irrigation conditions. Increasing temperature for 40 days during tuber bulking did not induce changes in tuber yield and starch content for the same water scenarios. However, it is suggestes that high temperature could reduce potential yield of potato crop (i.e. under irrigation), braking to the yield gain. The main factor affecting tuber yield, in current and future thermal scenarios of southern Chile was water availability as a consequence of reduction in leaf area duration and intercepted radiation during tuber bulking. Effects on healthy tuber properties as protein content, total phenols and antioxidant activity were dependent on the interaction between the environmental factors evaluated and genotypes.

中文翻译:

两种可用水情景下马铃薯块茎膨化过程中的块茎产量和质量对适度温度升高的响应

摘要 马铃薯是世界上最重要的粮食作物之一,在温带地区生长良好,夜间凉爽,供水充足。在智利南部,由于气候变化,预计气温将升高 1-5°C,降雨量将减少 30-40%。本研究的目的是评估中等高温(+3.1 至 +6.9 °C)在不同可用水情况下,块茎膨化期间对智利本地和商业基因型马铃薯产量和质量特性的影响。试验在两个生长季节的田间条件下进行。应用了四种处理:(i) T0H0,在雨养条件下的环境温度;(ii) T1H0,雨养条件下高温;(iii) T0H1,在灌溉条件下的环境温度;(iv) T1H1,在高温灌溉条件下。对于相同的水环境,在块茎膨化期间增加温度 40 天不会引起块茎产量和淀粉含量的变化。然而,有人认为高温会降低马铃薯作物的潜在产量(即灌溉条件下),从而阻碍产量增加。在智利南部当前和未来的热情景中,影响块茎产量的主要因素是由于叶面积持续时间减少和块茎膨胀期间截获的辐射而导致的可用水量。对健康块茎特性(如蛋白质含量、总酚和抗氧化活性)的影响取决于所评估的环境因素与基因型之间的相互作用。对于相同的水环境,在块茎膨化期间增加温度 40 天不会引起块茎产量和淀粉含量的变化。然而,有人认为高温会降低马铃薯作物的潜在产量(即灌溉条件下),从而阻碍产量增加。在智利南部当前和未来的热情景中,影响块茎产量的主要因素是由于叶面积持续时间减少和块茎膨胀期间截获的辐射而导致的可用水量。对健康块茎特性(如蛋白质含量、总酚和抗氧化活性)的影响取决于所评估的环境因素与基因型之间的相互作用。对于相同的水环境,在块茎膨化期间增加温度 40 天不会引起块茎产量和淀粉含量的变化。然而,有人认为高温会降低马铃薯作物的潜在产量(即灌溉条件下),从而阻碍产量增加。在智利南部当前和未来的热情景中,影响块茎产量的主要因素是由于叶面积持续时间减少和块茎膨胀期间截获的辐射而导致的可用水量。对健康块茎特性(如蛋白质含量、总酚和抗氧化活性)的影响取决于所评估的环境因素与基因型之间的相互作用。表明高温会降低马铃薯作物的潜在产量(即灌溉条件下),从而阻碍产量增加。在智利南部当前和未来的热情景中,影响块茎产量的主要因素是由于叶面积持续时间减少和块茎膨胀期间截获的辐射而导致的可用水量。对健康块茎特性(如蛋白质含量、总酚和抗氧化活性)的影响取决于所评估的环境因素与基因型之间的相互作用。表明高温会降低马铃薯作物的潜在产量(即灌溉条件下),从而阻碍产量增加。在智利南部当前和未来的热情景中,影响块茎产量的主要因素是由于叶面积持续时间减少和块茎膨胀期间截获的辐射而导致的可用水量。对健康块茎特性(如蛋白质含量、总酚和抗氧化活性)的影响取决于所评估的环境因素与基因型之间的相互作用。
更新日期:2020-06-01
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