Effects of light stress and light recovery on two maize (Zea mays L.) cultivars

Authors

  • Hongyu Zhang Farming and Animal Husbandry Bureau of Tongliao, 028005 Inner Mongolia, PR China
  • Ping Tian Agronomy College, Shenyang Agricultural University, 110866 Shenyang, PR China
  • Nan Mel Agronomy College, Shenyang Agricultural University, 110866 Shenyang, PR China
  • Pengxiang Sui Agronomy College, Shenyang Agricultural University, 110866 Shenyang, PR China
  • Wenke Zhang Agronomy College, Shenyang Agricultural University, 110866 Shenyang, PR China
  • Hua Qi Agronomy College, Shenyang Agricultural University, 110866 Shenyang, PR China

DOI:

https://doi.org/10.3329/bjb.v48i3.47912

Keywords:

Maize, Weak light stress, Light recovery, Chlorophyll

Abstract

The responses of a density-tolerant (ZD909) and a density-intolerant (DY405) maize cultivar to weak light stress and light recovery were compared. Photosynthetic characteristics and chlorophyll fluorescence parameters were analyzed under three light treatments: natural light (control), 44% shading and 66% shading. The light-saturation point and light-compensation point of both the maize cultivars decreased, whereas the apparent quantum efficiency increased during the shade period and the decreasing degree of light-saturation point and light-compensation point and the increasing degree of apparent quantum efficiency of the ZD909 were both higher than those of DY405. The weak light stress in the spike stage had a greater influence on the photosynthetic characteristics and chlorophyll fluorescence parameters of DY405, which indicated DY405 was less able to adapt to a weak light environment compared with ZD909.

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Published

2019-09-30

How to Cite

Zhang, H., Tian, P., Mel, N., Sui, P., Zhang, W., & Qi, H. (2019). Effects of light stress and light recovery on two maize (Zea mays L.) cultivars. Bangladesh Journal of Botany, 48(3), 513–520. https://doi.org/10.3329/bjb.v48i3.47912

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Section

Articles