Influence of plant architecture on maize physiology and yield in the Heilonggang River valley

Huang, Shoubing; Gao, Yinyi; Li, Yebei; Xu, Lan; Tao, Hongbin; Pu, Wang

doi:10.1016/j.cj.2016.06.018

Cited by 65 publications

(49 citation statements)

References 34 publications

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“…Increased branch angle is expected to alter leaf orientation in way facilitating enhanced interception of the Photo-synthetically Active Radiation (PAR), although there are equally higher chances for increased shading of the lower leaves. Interestingly, in maize, smaller but flatter leaves around the ear are expected to contribute to increased tolerance to high density planting (Huang et al. 2017).…”

Section: Resultsmentioning

confidence: 99%

Exogenous gibberellic acid does not induce early flowering in mungbeans [Vigna radiata (L.) Wilczek.]

Raina

Yadav

Singh

et al. 2018

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Gibberellic acid (GA) is an important phyto-hormone mediating plant growth. In present study, we evaluated the impact of GA treatment on morphological, phenological and molecular aspects of five mungbean genotypes. GA treatment caused a significant increase in plant height and branch angle in most of the genotypes. However, there was no impact of GA treatment on days to first anthesis, days to 50% flowering and pod length. Genotypes SML-859 and EC-48 revealed no change in their plant height and branch angle respectively upon GA treatment, suggestive of their probable GA insensitivity. Expression of flowering associated gene- VrSOC1 remained unaffected by GA treatment, validating thereby that exogenously supplied GA does not induce early flowering in mungbeans.

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Section: Resultsmentioning

confidence: 99%

Exogenous gibberellic acid does not induce early flowering in mungbeans [Vigna radiata (L.) Wilczek.]

Raina

Yadav

Singh

et al. 2018

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“…Moreover, they reported that the optimum distribution of light in the canopy delayed leaf senescence, especially for plants with a triangle shape. In a dense population, canopy architecture becomes an important factor determining yield because of interplant competition for light distribution and absorption [15].…”

Section: Plant Density and Kernel Numbermentioning

confidence: 99%

Estimation of Maize (Zea mays L.) Yield Per Harvest Area: Appropriate Methods

Tandzi

Mutengwa

2019

Agronomy

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Standardization of crop yield estimation methods at various levels of farming helps to obtain accurate agricultural statistics as well as assessing the suitability of agricultural practices under various production conditions. The current paper reviews various maize yield estimation methods, taking into account available yield parameters, and it also analyses the yield gap between maize potential and attainable yield. The easiest and more reliable methods of yield estimation are based on yield parameters collected from the field. However, farmer estimation methods are cheaper and faster compared to any other method of yield estimation from farmers’ fields. This paper also elaborates on the importance of the use of more complex methods for yield estimation, such as remote sensing and crop modelling. These complex methods are more accurate and can predict yield before field harvest with less deviation from the exact harvest yield. However, they are very expensive and not efficient for small plots of land (less than 1 ha). Factors that contribute to the gap between potential and actual yield include poor implementation of agricultural policies, strict regulation of fertilizer inputs, vulnerability of smallholder cropping systems to adverse climatic conditions, occurrence of biotic and abiotic constraints, as well as unavailability of seeds and labor.

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“…Canopy architecture is influenced by various factors such as management via plant density [38] and row spacing [45], as well as cultivar-specific properties (plant height, leaf number, leaf angle distribution). Modern maize hybrids usually have erect leaves above the ear and flat leaves below the ear [46], with erectophile hybrids usually associated with k-values < 0.5 [47]. Huang et al [46] recently found k-values between 0.56-0.74.…”

Section: Fapar Calculation Assumptionsmentioning

confidence: 99%

“…Modern maize hybrids usually have erect leaves above the ear and flat leaves below the ear [46], with erectophile hybrids usually associated with k-values < 0.5 [47]. Huang et al [46] recently found k-values between 0.56-0.74. This shows that estimation of canopy transmittance via the Beer's law remains a great source of uncertainty.…”

Section: Fapar Calculation Assumptionsmentioning

confidence: 99%

Towards Remote Estimation of Radiation Use Efficiency in Maize Using UAV-Based Low-Cost Camera Imagery

Tewes

Schellberg

2018

Agronomy

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Radiation Use Efficiency (RUE) defines the productivity with which absorbed photosynthetically active radiation (APAR) is converted to plant biomass. Readily used in crop growth models to predict dry matter accumulation, RUE is commonly determined by elaborate static sensor measurements in the field. Different definitions are used, based on total absorbed PAR (RUE total ) or PAR absorbed by the photosynthetically active leaf tissue only (RUE green ). Previous studies have shown that the fraction of PAR absorbed (fAPAR), which supports the assessment of RUE, can be reliably estimated via remote sensing (RS), but unfortunately at spatial resolutions too coarse for experimental agriculture. UAV-based RS offers the possibility to cover plant reflectance at very high spatial and temporal resolution, possibly covering several experimental plots in little time. We investigated if (a) UAV-based low-cost camera imagery allowed estimating RUEs in different experimental plots where maize was cultivated in the growing season of 2016, (b) those values were different from the ones previously reported in literature and (c) there was a difference between RUE total and RUE green . We determined fractional cover and canopy reflectance based on the RS imagery. Our study found that RUE total ranges between 4.05 and 4.59, and RUE green between 4.11 and 4.65. These values are higher than those published in other research articles, but not outside the range of plausibility. The difference between RUE total and RUE green was minimal, possibly due to prolonged canopy greenness induced by the stay-green trait of the cultivar grown. The procedure presented here makes time-consuming APAR measurements for determining RUE especially in large experiments superfluous.

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Influence of plant architecture on maize physiology and yield in the Heilonggang River valley

Cited by 65 publications

References 34 publications

Exogenous gibberellic acid does not induce early flowering in mungbeans [Vigna radiata (L.) Wilczek.]

Exogenous gibberellic acid does not induce early flowering in mungbeans [Vigna radiata (L.) Wilczek.]

Estimation of Maize (Zea mays L.) Yield Per Harvest Area: Appropriate Methods

Towards Remote Estimation of Radiation Use Efficiency in Maize Using UAV-Based Low-Cost Camera Imagery

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