Appropriate nitrogen application can enhance the high-temperature stress tolerance of tomato plants. Interestingly, short-term SHT stress improved growth and yield via higher photosynthetic efficiency and nitrogen metabolism whereas fruit quality was reduced.
HT stress inhibited the growth, yield, and fruit quality of tomato plants. The levels of nitrogen (urea, 46% N) were set as 0 (N1), 125 (N2), 187.5 (N3), 250 (N4), and 312.5 (N5) kg hm2, respectively, and the duration lasted for 5 days (short-term). Three levels of daily minimum/daily maximum temperature were adopted during the flowering and fruiting stage, namely control (CK 18☌/28☌), sub-high temperature (SHT 25☌/35☌), and high-temperature (HT 30☌/40☌) stress. This study was conducted to investigate the effects of nitrogen application on growth, photosynthetic performance, nitrogen metabolism activities, and fruit quality of tomato plants under high-temperature (HT) stress. You just subscribed to receive the final version of the article
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