PMID: 26785551Jan 21, 2016Paper

Effects of day and night temperature difference on growth, development, yield and fruit quality of tomatoes

Ying yong sheng tai xue bao = The journal of applied ecology
Li LiJin-xing Chen

Abstract

Abstract: The effects of day and night temperature difference (DIF) on tomato's growth were studied in three precisely controlled units in phytotron. Set DIF as 6 °C (25/19 C), 8 °C (26/18 °C), 10 °C (27/17 °C) respectively, with the same diurnal mean temperature as 22 °C. The results showed that, different tomato varieties needed different suitable DIF at different growth stages. Before flouring, compared with DIF 6 °C , DIF 8 °C could significantly improve the growth and development of the wild currant tomato LA1781, increasing the plant height by 23.1%, fastening leaf development by 1-2 leaves, advancing flowers by 7 d. DIF 10 °C had similar effects with DIF 8 °C on LA1781. As to the cultured ordinary tomatoes LA2397 and LA0490, DIF 6 °C made the seedlings grow well, DIF 8 °C had no significant improved effects on seedlings, DIF 10 °C depressed the seedling's growth and flouring, decreasing the plant height by 12.0%-18.3%, lowering the leaf development by 2-3 leaves, delaying flouring by 2-4 d. But DIF 10 °C increased the dry aboveground mass of these three varieties by 25.2%-44.2%. After flouring, compared with DIF 6 °C, DIF 10 °C could significantly improve the yield and fruit quality of LA1781, increasing fruit number by ...Continue Reading

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