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Effects of Solar Radiation on Dry Matter Distribution and Root Morphology of High Yielding Maize Cultivars

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  • Xiaoxia Guo

    (The Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps, College of Agronomy, Shihezi University, Shihezi 832000, China
    Key Laboratory of Crop Physiology and Ecology, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing 100081, China)

  • Yunshan Yang

    (The Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps, College of Agronomy, Shihezi University, Shihezi 832000, China)

  • Huifang Liu

    (College of Agronomy, Ningxia University, Yinchuan 750021, China)

  • Guangzhou Liu

    (Key Laboratory of Crop Physiology and Ecology, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing 100081, China)

  • Wanmao Liu

    (College of Agronomy, Ningxia University, Yinchuan 750021, China)

  • Yonghong Wang

    (Institute of Crop Sciences, Ningxia Academy of Agricultural and Forestry Sciences, Yongning, Yinchuan 750105, China)

  • Rulang Zhao

    (Institute of Crop Sciences, Ningxia Academy of Agricultural and Forestry Sciences, Yongning, Yinchuan 750105, China)

  • Bo Ming

    (Key Laboratory of Crop Physiology and Ecology, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing 100081, China)

  • Ruizhi Xie

    (Key Laboratory of Crop Physiology and Ecology, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing 100081, China)

  • Keru Wang

    (Key Laboratory of Crop Physiology and Ecology, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing 100081, China)

  • Shaokun Li

    (The Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps, College of Agronomy, Shihezi University, Shihezi 832000, China)

  • Peng Hou

    (Key Laboratory of Crop Physiology and Ecology, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing 100081, China)

Abstract

The root system connects the plant with the soil, which is a key factor in determining the utilization of soil resources and plant growth potential. Solar radiation can change maize shoot and root growth and affect grain formation. In this study, the effects of different solar radiation conditions on root morphology of three maize cultivars XY335, ZD958 and DH618 and their quantitative relationships were studied by conducting shading experiments. This study was conducted in maize high yield region of Qitai and Yinchuan, China, in 2018 and 2019. The planting densities were 7.5 × 10 4 (D1) and 12 × 10 4 (D2) plants ha −1 . The shading levels were natural light (CK), shading 15% (S1), 30% (S2) and 50% (S3). The results showed that maize responded to the decreased solar radiation through the increase in ratio of shoot dry weight (SWR) to whole plant dry weight and the decrease in ratio of root dry weight (RWR) to whole plant dry weight. As the solar radiation decreased, the root length density (RLD), root surface area (RSA), average root diameter (ARD) and root length ratio (RLR) decreased, while the specific root length (SRL) increased. With 100 MJ m −2 decrease in solar radiation, the RWR, RLD, RSA and RLR each decreased by 1.47%, 0.5 mm cm −3 ,0.4 m m −2 and 0. 19 m g −1 , respectively. Among the cultivars, the changes of DH618 were the fastest followed by XY335 and ZD958 but DH618 maintained the largest root system under any solar radiation condition. After the decrease of solar radiation, RWR, RLD and RLR were significantly positively correlated with the yield. This indicated that large root systems were conducive to the rapid response to decreased solar radiation and important for achieving stable and high yield. Maize cultivars with these type of root systems should be recommended to better adapt low solar radiation induced by regional variation or climate change.

Suggested Citation

  • Xiaoxia Guo & Yunshan Yang & Huifang Liu & Guangzhou Liu & Wanmao Liu & Yonghong Wang & Rulang Zhao & Bo Ming & Ruizhi Xie & Keru Wang & Shaokun Li & Peng Hou, 2022. "Effects of Solar Radiation on Dry Matter Distribution and Root Morphology of High Yielding Maize Cultivars," Agriculture, MDPI, vol. 12(2), pages 1-18, February.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:2:p:299-:d:753967
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    References listed on IDEAS

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    1. Qi Hu & Xueqing Ma & Huayun He & Feifei Pan & Qijin He & Binxiang Huang & Xuebiao Pan, 2019. "Warming and Dimming: Interactive Impacts on Potential Summer Maize Yield in North China Plain," Sustainability, MDPI, vol. 11(9), pages 1-15, May.
    2. Anonymous, 2013. "Introduction to the Issue," Journal of Wine Economics, Cambridge University Press, vol. 8(3), pages 243-243, December.
    3. Anonymous, 2013. "Introduction to the Issue," Journal of Wine Economics, Cambridge University Press, vol. 8(2), pages 129-130, November.
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    Cited by:

    1. Long Zhang & Guangzhou Liu & Yunshan Yang & Xiaoxia Guo & Shuai Jin & Ruizhi Xie & Bo Ming & Jun Xue & Keru Wang & Shaokun Li & Peng Hou, 2023. "Root Characteristics for Maize with the Highest Grain Yield Potential of 22.5 Mg ha −1 in China," Agriculture, MDPI, vol. 13(4), pages 1-12, March.
    2. Ayse Yavuz Ozalp & Halil Akinci, 2023. "Evaluation of Land Suitability for Olive ( Olea europaea L.) Cultivation Using the Random Forest Algorithm," Agriculture, MDPI, vol. 13(6), pages 1-22, June.

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