寡照复光试验中设施番茄叶片保护酶活性的变化
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十三五山东重大气象工程项目[鲁发改农经(2017)97号]和山东省气象局气象科学技术研究项目(面上课题)“不同模型构建方法对设施作物生育期模拟的精确度比较”(2020sdqxm15)共同资助


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Low irradiation and Relighting on Enzyme Activity of Tomato Leaf
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    摘要:

    北方地区设施农业发展的主要问题是秋冬季寡照天气频发,设施大棚内,作物生长所需要大多环境因子均能人工调控,但光照仍然依赖于自然环境。番茄是山东地区的主要设施作物之一,因此研究光照对设施番茄影响程度,对山东地区的设施农业生产有重要意义。以无限生长型番茄‘粉冠’为试材,在花果期于日光温室内设置3 d、6 d、9 d、12 d和15 d,5个遮阴日数处理,以日光温室内自然光为对照,研究在不同遮阴日数下,番茄叶片的保护酶活性和复光后叶片保护酶的恢复能力。结果表明:寡照会使番茄叶片的保护酶活性升高,比叶重减小;随着遮阴日数的增加,番茄叶片的保护酶和比叶重的恢复能力逐渐降低,遮阴时间过长(12 d以上)则会对叶片光合系统产生不可逆的损伤,使保护酶活性无法恢复。

    Abstract:

    The principal problem of the development of facility agriculture in northern China is the frequent low irradiation weather in autumn and winter.In greenhouses,most environmental factors required for crop can be artificially regulated except light.Tomato is one of the main facilities crops in Shandong province.It is important to study the effect of light on facility tomato for agricultural production in Shandong.In order to study the enzyme activity of tomato leaf under different shading days,taking the infinite-growth-typed tomatoes ‘Power Corolla’ as experimental material, five shading treatments of tomatoes were set in greenhouse during the flowering and fruiting period, they were T1 (3-day shading), T2 (6-day shading), T3 (9-day shading), T4 (12-day shading) and T5 (15-day shading), respectively, and the growth of tomatoes under natural light in solar greenhouse was used as the control check .The results showed that low irradiation would increased the enzyme activity of tomato leaves and reduced the leaf weight.As the number of shading days has increased,the recovery capability of enzyme activity and leaf weight on tomato leaves would reduced.Long shading time (above 12 days) would cause irreversible damage to the photosynthetic system of leaf and making the enzyme activity unrecoverable.

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  • 收稿日期:2022-04-10
  • 最后修改日期:2022-11-17
  • 录用日期:2023-02-17
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