1
|
Yang Y, Liu G, Guo X, Liu W, Xue J, Ming B, Xie R, Wang K, Hou P, Li S. Quantitative Relationship Between Solar Radiation and Grain Filling Parameters of Maize. FRONTIERS IN PLANT SCIENCE 2022; 13:906060. [PMID: 35755643 PMCID: PMC9226782 DOI: 10.3389/fpls.2022.906060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
A quantitative understanding of the factors driving changes in grain filling is essential for effective prioritization of increasing maize yield. Grain filling is a significant stage in maize yield formation. Solar radiation is the energy source for grain filling, which is the ultimate driving factor for final grain weight and grain filling capacity that determine maize yield. Here, we first confirmed the quantitative relationships between grain filling parameters and photosynthetically active radiation (PAR) by conducting field experiments using different shading and plant density conditions and cultivars in 2019 and 2020 in Xinjiang, China. The results showed that with every 100 MJ m-2 increase in PAR, the average grain filling rate (G ave), maximum grain-filling rate (G max), and the kernel weight at the time of maximum grain-filling rate (W max) increased by 0.073 mg kernel-1 day-1, 0.23 mg kernel-1 day-1, and 0.24 mg kernel-1, and the time of maximum grain-filling rate (T max) delayed by 0.91 day. Relative changes in PAR were significantly and positively correlated with relative changes in yield and G ave. With every 1% change in PAR, yield and G ave changed by 1.16 and 0.17%, respectively. From the perspective of grain filling capacity, DH618 was a more shade-resistant cultivar than XY335 and ZD958. It is urgent to breed maize cultivars with low light tolerance and high grain yield in the face of climate change, particularly the decrease in solar radiation.
Collapse
Affiliation(s)
- Yunshan Yang
- The Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps/College of Agronomy, Shihezi University, Shihezi, China
- Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Guangzhou Liu
- Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaoxia Guo
- The Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps/College of Agronomy, Shihezi University, Shihezi, China
| | - Wanmao Liu
- School of Agriculture, Ningxia University, Yinchuan, China
| | - Jun Xue
- Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Bo Ming
- Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ruizhi Xie
- Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Keru Wang
- Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Peng Hou
- Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shaokun Li
- The Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps/College of Agronomy, Shihezi University, Shihezi, China
- Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| |
Collapse
|
2
|
Xie C, Pu S, Xiong X, Chen S, Peng L, Fu J, Sun L, Guo B, Jiang M, Li X. Melatonin-assisted phytoremediation of Pb-contaminated soil using bermudagrass. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:44374-44388. [PMID: 33846924 DOI: 10.1007/s11356-021-13790-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
Exogenous application of melatonin to plants is a promising approach for assisted phytoremediation of soil lead (Pb). In this study, we investigated the effects of foliar applications of melatonin to mature bermudagrass (Cynodon dactylon (L.) Pers.), a fast-growing perennial with potential as a non-hyperaccumulator plant for Pb phytoremediation. Following exposure to Pb (3000 mg kg-1) for 30 days, decreases in biomass and chlorophyll production, degradation of thylakoid membranes, reduced photosynthesis and PSII (reaction center of photosystem II) efficiency, and elevated oxidative stress were found. Foliar applications of melatonin to Pb-stressed bermudagrass mitigated these negative effects, restoring photosynthetic pigments and chloroplast ultrastructure, subsequently improving photosynthesis and photochemistry efficiency of PSII. Exogenous melatonin also eliminated the excessive accumulations of reactive oxygen species (ROS) and methylglyoxal (MG) which associated with cellular redox homeostasis by improving ascorbic acid (AsA) and reduced glutathione (GSH) contents, redox status of GSH/GSSG (oxidative glutathione), and key enzymes activities in both AsA-GSH and glyoxalase systems. Ultimately, treating bermudagrass plants with exogenous melatonin elevated biomass production and disproportionally greater Pb translocation to roots and senescent leaves. This collectively resulted in 21% greater recovery of Pb compared to Pb-stressed bermudagrass lacking melatonin application. Overall, results from this study demonstrated the beneficial roles of melatonin for improving the effectiveness of bermudagrass as a non-hyperaccumulator plant for soil Pb phytoremediation.
Collapse
Affiliation(s)
- Chengcheng Xie
- College of Landscape Architecture, Sichuan Agricultural University, No. 211 Huimin Road, Wenjiang, 611130, Sichuan, People's Republic of China
| | - Siyi Pu
- College of Landscape Architecture, Sichuan Agricultural University, No. 211 Huimin Road, Wenjiang, 611130, Sichuan, People's Republic of China
| | - Xi Xiong
- Division of Plant Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - Shuyu Chen
- College of Landscape Architecture, Sichuan Agricultural University, No. 211 Huimin Road, Wenjiang, 611130, Sichuan, People's Republic of China
| | - Lingli Peng
- Department of Leisure and Tourism, Chengdu Agricultural College, Wenjiang, Sichuan, 611130, People's Republic of China
| | - Jingyi Fu
- College of Landscape Architecture, Sichuan Agricultural University, No. 211 Huimin Road, Wenjiang, 611130, Sichuan, People's Republic of China
| | - Lingxia Sun
- College of Landscape Architecture, Sichuan Agricultural University, No. 211 Huimin Road, Wenjiang, 611130, Sichuan, People's Republic of China
| | - Baimeng Guo
- College of Landscape Architecture, Sichuan Agricultural University, No. 211 Huimin Road, Wenjiang, 611130, Sichuan, People's Republic of China
| | - Mingyan Jiang
- College of Landscape Architecture, Sichuan Agricultural University, No. 211 Huimin Road, Wenjiang, 611130, Sichuan, People's Republic of China
| | - Xi Li
- College of Landscape Architecture, Sichuan Agricultural University, No. 211 Huimin Road, Wenjiang, 611130, Sichuan, People's Republic of China.
| |
Collapse
|