Improving maize grain yield by matching maize growth and solar radiation

Yang, Yunshan; Xu, Wenjuan; Hou, Peng; Liu, Guangzhou; Liu, Wanmao; Wang, Yonghong; Zhao, Rulang; Ming, Bo; Xie, Ruizhi; Wang, Keru; Li, Shaokun

doi:10.1038/s41598-019-40081-z

Cited by 78 publications

(58 citation statements)

References 32 publications

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“…Increasing plant density is an important way to improve maize grain yield, as was verified in our previous study 7 , 29 , 30 . In the present study, the grain yields were universally more than 11.0 Mg ha −1 (Table S1 ), and the highest obtained yield was 23.9 Mg ha −1 , which was obtained at a density of 10.5 plants m −2 (data not shown, Experiment II).…”

Section: Discussionsupporting

confidence: 65%

“…In previous studies, through more than 10 years of field investigation at Qitai Farm in Xinjiang, China, we observed significant differences in grain yields 6 , 7 , 29 and different individual yield by visual observation in the border rows between different high-yield maize cultivars under high plant density. Based on the results of these studies, we hypothesized that the marginal superiority in the border rows could be used as an indicator of plant-density tolerance under high plant density.…”

Section: Introductionmentioning

confidence: 81%

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Marginal superiority of maize: an indicator for density tolerance under high plant density

Liu

Yang

et al. 2020

Sci Rep

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Marginal superiority is a common phenomenon in crops, and is caused by the competitiveness of individual plant for resources and crop adaptability to crowded growth conditions. In this study, in order to clarify the response of marginal superiority to maize morphology and plant-density tolerance, field experiments without water and nutrition stress were conducted at Qitai Farm in Xinjiang, China, in 2013–2014 and 2016–2019. The results showed that no more than three border rows of all the cultivars had marginal superiority under high density, about 90% of all the cultivars had no more than two border row that had marginal superiority and a significant negative correlation was observed between marginal superiority and population grain yield (first border row: y = − 2.193x + 213.9, p < 0.05; second border row: y = − 2.076x + 159.2, p < 0.01). Additionally, marginal superiority was found to have a significant positive relationship with plant density (first border row: y = 6.049x + 73.76, p < 0.01; second border row: y = 1.88x + 95.41, p < 0.05) and the average leaf angle above the ear (first border row: y = 2.306x + 103.1, p < 0.01). These results indicated that the smaller the leaf angle above the ear, the weaker the marginal superiority and the higher the grain yield. It suggests that the magnitude of marginal superiority in the border rows can be an indicator for plant-density tolerance under high density. What’s more, cultivars with small leaf angle above the ear can be selected to weaken the marginal superiority and improve grain yield under high plant density. Conversely, cultivars with a large leaf angle above the ear can be selected to achieve higher individual yield in intercropping systems with no more than four rows alternated with other crops.

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Section: Discussionsupporting

confidence: 65%

Section: Introductionmentioning

confidence: 81%

Marginal superiority of maize: an indicator for density tolerance under high plant density

Liu

Yang

et al. 2020

Sci Rep

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“…Genetic background, environmental conditions, and geographic location can affect kernel composition in maize hybrid (Nuss & Tanumihardjo, 2010). Further, our findings showed that Xianyu 335 had the highest grain yield which was 12.80 Mg ha −1 at the 44°37′ N. Xianyu 335 had the higher yield potential (Yang et al., 2019) which used sufficient solar radiation and Zhongdan 909 showed the second‐highest grain yield which was found to be 12.76 Mg ha −1 at the latitude of 43°48′ N. While the maximum grain yield of hybrids Zhengdan 958, Nonghua 101, and Denghai 11 were 12.17, 12.17, and 10.93 Mg ha −1 respectively, at the latitudes of 44°28′, 43°39′, and 41°43′ N. From the obtained results, it can be found that each hybrid obtained the maximum grain yield at different latitudes. In general, the selection of genotype is also essential for KW and grain yield at different ecological conditions (latitudes).…”

Section: Discussionmentioning

confidence: 61%

Effect of latitude on maize kernel weight and grain yield across China

et al. 2021

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Latitude influences maize kernel weight (KW) and grain yield by variation in climatic conditions such as temperature and solar radiation. In this study, the major aim is to examine the spatial variation in 1,000-KW and grain yield of the same maize hybrids and to further understand the differences in the response of 1,000-KW and maize grain yield to climatic factors under a wide range of latitude. For this purpose, we conducted field experiments at 17 different locations in the North maize region (NM) and Huanghuaihai maize region (HM) of China between 33˚35′ N and 46˚48′ N latitude from 2013 to 2016. The extensively used five maize hybrids (Xianyu 335, Zhengdan 958, Denghai 11, Nonghua 101, and Zhongdan 909) in China were chosenfor these experiments. Based on the findings of this study, the maize 1,000-kernel weight and yield were found to be significantly influenced by the latitude. The maximum average grain yield of five hybrids was observed (12.25 Mg ha -1 ) at 43˚58′ N latitude. Whereas the maximum 1,000-KW of five hybrids was weighted (362.08 g) at the latitude of 41˚48′ N, respectively. Five hybrids showed similar trends with latitudes. Among all the climatic factors, mean minimum temperature (T m ) and accumulated solar radiation (R a ) were mainly responsible for the variations of 1,000-KW and maize grain yield. Based on the obtained results of this research, it was also found that Xianyu 335 had higher yield potential, especially at high latitude.

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“…This is most likely because radiation levels and temperature were both higher in Hainan during grain filling ( Supplementary Fig. 6), the stage at which a positive correlation between yield and solar radiation level has been established 38,39 . In traditional breeding, the generation of hybrid rice lines led to yield increases up to 50% per unit area compared with inbred lines 40,41 .…”

Section: Discussionmentioning

confidence: 99%

Maize GOLDEN2-LIKE genes enhance biomass and grain yields in rice by improving photosynthesis and reducing photoinhibition

Wang

et al. 2020

Commun Biol

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Photosynthetic efficiency is a major target for improvement of crop yield potential under agricultural field conditions. Inefficiencies can occur in many steps of the photosynthetic process, from chloroplast biogenesis to functioning of the light harvesting and carbon fixation reactions. Nuclear-encoded GOLDEN2-LIKE (GLK) transcription factors regulate some of the earliest steps by activating target genes encoding chloroplast-localized and photosynthesisrelated proteins. Here we show that constitutive expression of maize GLK genes in rice leads to enhanced levels of chlorophylls and pigment-protein antenna complexes, and that these increases lead to improved light harvesting efficiency via photosystem II in field-grown plants. Increased levels of xanthophylls further buffer the negative effects of photoinhibition under high or fluctuating light conditions by facilitating greater dissipation of excess absorbed energy as heat. Significantly, the enhanced photosynthetic capacity of field-grown transgenic plants resulted in increased carbohydrate levels and a 30-40% increase in both vegetative biomass and grain yield.

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Improving maize grain yield by matching maize growth and solar radiation

Cited by 78 publications

References 32 publications

Marginal superiority of maize: an indicator for density tolerance under high plant density

Marginal superiority of maize: an indicator for density tolerance under high plant density

Effect of latitude on maize kernel weight and grain yield across China

Maize GOLDEN2-LIKE genes enhance biomass and grain yields in rice by improving photosynthesis and reducing photoinhibition

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