Light shading improves the yield and quality of seed in oil-seed peony (Paeonia ostii Feng Dan)

Han, Chen-Jing; Wang, Qi; Zhang, Hongbao; Wang, Shou-hai; Song, Hua-dong; Hao, Jian-mei; Dong, Hezhong

doi:10.1016/s2095-3119(18)61979-3

Cited by 35 publications

(24 citation statements)

References 31 publications

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“…Agroforestry, a multifunctional working landscape, can be a viable land-use option that, in addition to alleviating poverty, offers a number of ecosystem services and environmental benefits (Jose 2009). Obvious 'midday depression of photosynthesis' of P. ostii was observed in monoculture systems at noon, especially in summer, whereas moderate shading treatment could relieve effectively this phenomenon and improve the yield (Bi et al 2011, Tang et al 2017, Han et al 2018. Previous studies also suggested that the forest margin and forest gap with appropriate shade were the most suitable growing environment for oil tree peony (Zhou et al 2010, Zhang et al 2014.…”

Section: Introductionmentioning

confidence: 99%

Photosynthesis, growth, and yield of Paeonia ostii in tree-based agroforestry systems

Yang¹,

Zhang²,

Wang³

et al. 2020

Photosynt.

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Paeonia ostii T. Hong & J.X. Zhang, an emerging oil crop, was intercropped with 3-year-old plantations of pawpaw [Chaenomeles sinensis (Thouin.) Koehne], Chinese toon (Toona sinensis Roem.), and walnut (Juglans regia L.). In order to achieve a better production system, we studied the effects of intercropping on the photosynthesis, growth, and yield of P. ostii. The results showed that different pattern of agroforestry systems changed microclimatic and growing site conditions in comparison to the control treatment. The correlation analysis demonstrated that both similarities and differences were found in relationship between net photosynthetic rate (PN) and main ecophysiological factors at different treatments. Agroforestry systems significantly reduced transpiration rate and increased water-use efficiency (WUE), maximal quantum yield of PSII photochemistry, chlorophyll (Chl) a and total Chl contents, whereas there were no differences between PN, intercellular CO2 concentration, photochemical efficiency of PSII in the light, and plant height in these systems. The obviously exponential relationship between PN and PAR during a day were observed in Chinese toon and walnut treatments. The highest effective quantum yield of PSII photochemistry, electron transport rate, and photochemical quenching coefficient were observed in walnut treatment. The higher WUE and SPAD value, the thinnest stem, the biggest crown, the lowest stomatal conductance, and Chl a/b ratio as well as the fewest pods and harvest seed yield were observed in pawpaw treatment. In addition, there was a significant correlation between SPAD value and Chl (a+b) of P. ostii in agroforestry system. This study could be an important contribution for the science of land management in oil peony and other understory crops.

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Section: Introductionmentioning

confidence: 99%

Photosynthesis, growth, and yield of Paeonia ostii in tree-based agroforestry systems

Yang¹,

Zhang²,

Wang³

et al. 2020

Photosynt.

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“…P. ostii, H. officinalis, and A. lancea, as commonly used medicinal plants in clinics, have long medicinal histories ( Figure 1) [21,22]. P. ostii has become one of the important woody oleaginous plants, with a high content of alpha-linolenic acid and the high oil content of the seeds, and its peony seed extract is a potential anticancer drug candidate [23][24][25]. In addition, the main active component in root bark of P. ostii is paeonol, which has anti-inflammatory, anti-tumor, anti-cardiovascular, and other pharmacological effects [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Microscopic Characteristic and Chemical Composition Analysis of Three Medicinal Plants and Surface Frosts

Han

Shan

et al. 2019

Molecules

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The accumulation of chemical constituents of some medicinal plants, such as Paeonia ostii T. Hong et J. X. Zhang, Houpoëa officinalis (Rehder and E. H. Wilson) N. H. Xia and C. Y. Wu. andAtractylodes lancea (Thunb.) DC, can precipitate on the surface and form frosts after natural or artificial intervention. The characteristics of these three medicinal plants and their frosts were analyzed by light microscope, polarizing microscope, stereomicroscope, and metalloscope. The results of ordinary Raman of P. ostii and H. officinalis showed that the frosts of P. ostii matched paeonol, while that of H. officinalis matched magnolol and honokiol. In P. ostii and its frost, 19 peaks were identified by UPLC-Q/TOF-MS, and the main component was paeonol. Eleven components were identified in H. officinalis and its frosts, and the main components were magnolol and honokiol. A. lancea and its frosts were analyzed by gas chromatography-mass spectrometry (GC-MS), 21 were identified, and its main components were hinesol and β-eudesmol. These three medicinal plants accumulate compounds and precipitate frosts on the surface. The results show that the components of the frosts provide a basis for quality evaluation and research on similar medicinal plants, and reveals the scientific connotation of "taking the medicinal materials' precipitated frosts as the best" of P. ostii, H. officinalis, and A. lancea, to some extent.

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“…In our previous study, we found that light shading significantly increased the yield and quality of tree peony seed 2 . Subsequently, we explored the physiological mechanism whereby light shading increased seed yield and quality through the analysis of the seed development process, nutrient accumulation, and leaf physiological characteristics 6,12 .…”

mentioning

confidence: 80%

“…Shading treatment and experimental design. The shading experimental designs were the same as previously described 2,12 . The field experiment was conducted in an oilseed tree peony planting base at the Experimental Station of Shandong Cotton Research Center, Linqing (36 °61′ N, 115 °42′ E, 35 m a.s.l.…”

Section: Methodsmentioning

confidence: 99%

Leaf structure and seed histochemistry analyses provided structural insights into the improved yield and quality of tree peony seed under light shading conditions

Han

Mei

et al. 2020

Sci Rep

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in biology, structure is the basis of function. for plants, changes in their physiological and ecological functions are usually caused by structural changes. to understand how shading conditions change the plant structures, thereby providing structural insights into the improved yield and quality, oilseed tree peony were shaded with different densities of polyethylene nets from 28 days after pollination (DAP) until harvesting. The thickness of the leaf (LT), vein (VT), upper epidermis (UET), lower epidermis (LET), palisade tissue (PT), sponge tissue (ST), as well as the accumulation and distribution of starch, protein, and fat, were observed at 14-day intervals. The results showed that shading had a significant effect on the anatomical structure of the leaves. In the rapid growth period (before 70 DAP), the LT, ET, and VT under shading were significantly lower than under non-shading. During this period, the accumulation of starch and protein under shading was lower than that under non-shading. At the maturation period (99-112 DAP), the LT and PT under shading were higher than under non-shading, indicating that light shading delayed leaf senescence and increased photosynthetic capacity. Shading delayed the degradation of the integument cells and prolonged seed development and nutrient accumulation.Tree peony (Paeonia section Moutan DC.) is indigenous to China, and its wild germplasms are mainly distributed in mountainous shrublands and secondary broad-leafed forests in the provinces of Henan, Gansu, and Shanxi 1 . In the transplantation process of oilseed tree peony from mountainous shrublands to the field, their leaves usually turn yellow, senescence prematurely, or even fall off due to the high light intensity and temperature, which seriously reduces the yield and quality of the tree peony seeds 2 . Shading is the preferred method for providing a suitable environment during the growth period since high light intensity and temperature are detrimental to ornamenta shrubs growth 3 . For example, when kiwi fruit plants were shaded, the canopy microclimate was significantly optimized, the temperature was lowered, and the humidity was increased, which effectively alleviated the physiological stress of the leaves and fruits and reduced the fallen fruit 4 . Under shading, Trollius chinensis Bunge grew relatively better and exhibited an extended viewing life 5 .Light is a primary factor of the physical environment. Shading changes the microenvironment, which consequently alters leaf physiological characteristics 6 as well as leaf structure 7-9 . Shading increases leaf area and reduces leaf thickness 7 and reduces palisade tissue and stomatal density 8 . It also increases the intercellular space between the palisade tissue and spongy tissue, as well as the numbers of vascular bundles 5 . Shading has also been found to reduce the palisade tissue thickness, stomatal density, and the ratio of palisade tissue to sponge tissue 10 . Shading www.nature.com/scientificreports www.nature.com/scientificreports/ than that under non-s...

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Light shading improves the yield and quality of seed in oil-seed peony (Paeonia ostii Feng Dan)

Cited by 35 publications

References 31 publications

Photosynthesis, growth, and yield of Paeonia ostii in tree-based agroforestry systems

Photosynthesis, growth, and yield of Paeonia ostii in tree-based agroforestry systems

Microscopic Characteristic and Chemical Composition Analysis of Three Medicinal Plants and Surface Frosts

Leaf structure and seed histochemistry analyses provided structural insights into the improved yield and quality of tree peony seed under light shading conditions

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