Responses to shade and subsequent recovery of soya bean in maize-soya bean relay strip intercropping

Wu, Yushan; Gong, Wanzhuo; Yang, Feng; Wang, Xiaochun; Yong, Taiwen; Yang, Wenyu

doi:10.1080/1343943x.2015.1128095

Cited by 65 publications

(60 citation statements)

References 43 publications

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“…The heavily shaded plants; conversely, exhibited the lowest yields with the shortest plant stature (Table 1). These results indicated that heavy shading adversely affects the yield of winged bean, just as shown in many other crop plants, such as soybean and sage (Salvia officinalis) (ZERVOUDAKIS et al, 2012;WU et al, 2016;IQBAL et al, 2018).…”

Section: ---------------------------Trait-----------------------mentioning

confidence: 66%

Effects of shading on the growth, development and yield of winged bean (Psophocarpus tetragonolobus)

et al. 2020

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An experiment was conducted to investigate the effects of different shading regimes [i.e., 60% (heavy), 30% (moderate), and 0% (control)] on 25 traits associated with the morphological features, photosynthetic gas exchange and agronomic characteristics of winged bean (Psophocarpus tetragonolobus), an underutilized protein-rich legume from the tropics. Collectively, 80% of the studied variables displayed significant differences (P<0.05) between at least two shade treatments. Shading generally showed most pronounced effect on the physiological traits of the legume, whereby the stomatal conductance, photosynthetic and transpiration rate differed significantly among plants for all treatments. The non-shaded plants were observed to have superior growth and physiological responses than the shaded plants. Interestingly, the moderately shaded plants exhibited the highest yield per plant, which significantly differed from the non-shaded and heavily shaded plants. This indicated that winged bean can adapt to partial canopy cover, making it a potential nitrogen-fixing cash crop which can be planted together with fruit or oil trees in commercial plantations.

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Section: ---------------------------Trait-----------------------mentioning

confidence: 66%

Effects of shading on the growth, development and yield of winged bean (Psophocarpus tetragonolobus)

et al. 2020

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“…Moreover, past studies have confirmed the adverse impacts of shading conditions on soybean morphology (Khalid et al, 2019;Raza, Feng, Iqbal, Ahmed, et al, 2019), physiology (Feng et al, 2018), and dry-matter accumulation (Ahmed et al, 2018;Yang et al, 2014). However, after maize harvesting in MSR, soybean exhibit strong recovery growth (Wu et al, 2016), and the competition for available resources with maize is compensated from the vegetative stage to the flowering stage (Fan et al, 2018). At the reproductive stage, soybean in MSR has better access to available resources compared to sole soybean plants, especially for light and nutrients .…”

Section: Introductionmentioning

confidence: 92%

Optimum strip width increases dry matter, nutrient accumulation, and seed yield of intercrops under the relay intercropping system

Raza

Ling

Werf

et al. 2020

Food and Energy Security

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Strip width management is a critical factor for producing higher crop yields in relay intercropping systems. A 2-year field experiment was carried out during 2012 and 2013 to evaluate the effects of different strip width treatments on dry-matter production, major-nutrient (nitrogen, phosphorus, and potassium) uptake, and competition parameters of soybean and maize in relay intercropping system. The strip width (SW) treatments were 0.40, 0.40, and 0.40 m (SW1); 0.40, 0.40, and 0.50 m (SW2); 0.40, 0.40, and 0.60 m (SW3); and 0.40, 0.40, and 0.70 m (SW4) for soybean row spacing, maize row spacing, and spacing between soybean and maize rows, respectively. As compared to sole maize (SM) and sole soybean (SS), relay-intercropped maize and soybean accumulated lower quantities of nitrogen, phosphorus, and potassium in all treatments. However, maize in SW1 accumulated higher nitrogen, phosphorus, and potassium than SW4 (9%, 9%, and 8% for nitrogen, phosphorus, and potassium, respectively). Soybean in SW3 accumulated 25% higher nitrogen, 33% higher phosphorus, and 24% higher potassium than in SW1. The improved nutrient accumulation in SW3 significantly increased the soybean dry matter by 19%, but slightly decreased the maize dry matter by 6% compared to SW1. Similarly, SW3 increased the competition ratio value of soybean (by 151%), but it reduced the competition ratio value of maize (by 171%) compared to SW1. On average, in SW3, relay-cropped soybean produced 84% of SS seed yield and maize produced 98% of SM seed yield and achieved the land equivalent ratio of 1.8, demonstrating the highest level in the world. Overall, these results suggested that by selecting the appropriate strip width (SW3; 0.40 m for soybean row spacing, 0.40 m maize row spacing, and 0.60 m spacing between soybean and maize rows), we can increase the nutrient 2 of 14 | RAZA et Al.

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“…Furthermore, dense-planting patterns in crops also lead to shade stress among neighboring seedlings [24]. Previous studies had demonstrated that soybean morphological traits changed markedly under shade conditions, resulting in increased plant height, decreased yield, and reduced root length [23,25,26]. Notably, leaf expansion is also suppressed when soybean responds to shade stress [27,28].…”

Section: Introductionmentioning

confidence: 99%

Genome-wide identification of GRF transcription factors in soybean and expression analysis of GmGRF family under shade stress

et al. 2019

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Background: The Growth-regulating factor (GRF) family encodes plant-specific transcription factors which contain two conserved domains, QLQ and WRC. Members of this family play vital roles in plant development and stress response processes. Although GRFs have been identified in various plant species, we still know little about the GRF family in soybean (Glycine max). Results: In the present study, 22 GmGRFs distributed on 14 chromosomes and one scaffold were identified by searching soybean genome database and were clustered into five subgroups according to their phylogenetic relationships. GmGRFs belonging to the same subgroup shared a similar motif composition and gene structure. Synteny analysis revealed that large-scale duplications played key roles in the expansion of the GmGRF family. Tissue-specific expression data showed that GmGRFs were strongly expressed in growing tissues, including the shoot apical meristems, developing seeds and flowers, indicating that GmGRFs play critical roles in plant growth and development. On the basis of expression analysis of GmGRFs under shade conditions, we found that all GmGRFs responded to shade stress. Most GmGRFs were down-regulated in soybean leaves after shade treatment. Conclusions: Taken together, this research systematically analyzed the characterization of the GmGRF family and its primary roles in soybean development and shade stress response. Further studies of the function of the GmGRFs in the growth, development and stress tolerance of soybean, especially under shade stress, will be valuable.

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Responses to shade and subsequent recovery of soya bean in maize-soya bean relay strip intercropping

Cited by 65 publications

References 43 publications

Effects of shading on the growth, development and yield of winged bean (Psophocarpus tetragonolobus)

Effects of shading on the growth, development and yield of winged bean (Psophocarpus tetragonolobus)

Optimum strip width increases dry matter, nutrient accumulation, and seed yield of intercrops under the relay intercropping system

Genome-wide identification of GRF transcription factors in soybean and expression analysis of GmGRF family under shade stress

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