scholarly journals Phenotyping of Different Italian Durum Wheat Varieties in Early Growth Stage With the Addition of Pure or Digestate-Activated Biochars

2021 ◽  
Vol 12 ◽  
Author(s):  
Arianna Latini ◽  
Fabio Fiorani ◽  
Patrizia Galeffi ◽  
Cristina Cantale ◽  
Annamaria Bevivino ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Wheat Straw ◽  
Plant Traits ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Dry Weight ◽  
Early Growth ◽  
Basic Knowledge ◽  
Growth Stages ◽  
Wheat Varieties

This study aims to highlight the major effects of biochar incorporation into potting soil substrate on plant growth and performance in early growth stages of five elite Italian varieties of durum wheat (Triticum durum). The biochars used were obtained from two contrasting feedstocks, namely wood chips and wheat straw, by gasification under high temperature conditions, and were applied in a greenhouse experiment either as pure or as nutrient-activated biochar obtained by incubation with digestate. The results of the experiment showed that specific genotypes as well as different treatments with biochar have significant effects on plant response when looking at shoot traits related to growth. The evaluated genotypes could be clustered in two main distinct groups presenting, respectively, significantly increasing (Duilio, Iride, and Saragolla varieties) and decreasing (Marco Aurelio and Grecale varieties) values of projected shoot system area (PSSA), fresh weight (FW), dry weight (DW), and plant water loss by evapotranspiration (ET). All these traits were correlated with Pearson correlation coefficients ranging from 0.74 to 0.98. Concerning the treatment effect, a significant alteration of the mentioned plant traits was observed when applying biochar from wheat straw, characterized by very high electrical conductivity (EC), resulting in a reduction of 34.6% PSSA, 43.2% FW, 66.9% DW, and 36.0% ET, when compared to the control. Interestingly, the application of the same biochar after nutrient spiking with digestate determined about a 15–30% relief from the abovementioned reduction induced by the application of the sole pure wheat straw biochar. Our results reinforce the current basic knowledge available on biological soil amendments as biochar and digestate.

scholarly journals Cd and Zn Concentrations in Soil and Silage Maize following the Addition of P Fertilizer

Agronomy ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2336
Author(s):  
Andrea Giovanna Niño-Savala ◽  
Benedikt Weishaar ◽  
Jürgen Franzaring ◽  
Xuejun Liu ◽  
Andreas Fangmeier
Keyword(s):  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Dilution Effect ◽  
Soil Characteristics ◽  
Development Stage ◽  
Growth Stages ◽  
Cd Uptake ◽  
Silage Maize ◽  
P Fertilizer ◽  
Initial Uptake

Studies of soil Cd and Zn are often performed on sites that are contaminated or have deficient Zn conditions. Soil characteristics and crop management could impact the soil mobility and uptake of Cd and Zn, even when considering unpolluted Cd soils and adequate soil Zn levels. The concentrations of these two metals were assessed in soil and silage maize under five P fertilization treatments at two growth stages under low Cd and sufficient Zn conditions. Pearson correlation coefficients and stepwise linear regressions were calculated to investigate the soil characteristics influencing the bioavailable metal fraction in soil and the metal concentration in silage maize. P treatments did not impact Cd accumulation in maize; however, the Zn uptake was affected by P placement at the leaf development stage. From early development to maturity, the Cd level in maize decreased to 10% of the initial uptake, while the Zn level decreased to 50% of the initial uptake. This reduction in both metals may be attributed to a dilution effect derived from high biomass production. Silage maize could alleviate the initial Cd uptake while diminishing the depressant effect of P fertilizer on Zn concentration. Further research is required to understand the effect of P fertilizer on Cd uptake and its relation to Zn under field conditions at early and mature stages.

scholarly journals Changes of Endogenous Jasmonic Acid and Methyl Jasmonate in Apples and Sweet Cherries during Fruit Development

2000 ◽  
Vol 125 (3) ◽  
pp. 282-287 ◽  
Author(s):  
Satoru Kondo ◽  
Akihiro Tomiyama ◽  
Hideharu Seto
Keyword(s):  
Jasmonic Acid ◽  
Methyl Jasmonate ◽  
Sweet Cherry ◽  
Prunus Avium ◽  
Dry Weight ◽  
Early Growth ◽  
Growth Stages ◽  
Sweet Cherries ◽  
Maturation Stages ◽  
Apple Seeds

Trans-jasmonic acid (JA), cis-JA, and trans-methyl jasmonate (MeJA) were quantified in pulp and seeds of `Tsugaru' apple [Malus sylvestris (L.) Mill. var. domestica (Borkh.) Mansf.] and `Satohnishiki' sweet cherry (Prunus avium L.). Trans-JA and cis-JA showed similar changes during development in both types of fruit. JA concentration was high in the early growth stages of apple pulp development, decreased with days after full bloom (DAFB), and then increased again during maturation. There was an initial decrease in concentration of MeJA in apple pulp, followed by a general increase towards harvest. Concentrations of JA and MeJA in the pulp of sweet cherry were high during early growth stages, then decreased towards harvest. PDJ treatment at 104 DAFB (preclimacteric stage) increased endogenous abscisic acid concentration and anthocyanin concentration at 122 and 131 DAFB (maturation stages) in apple. JA concentration in apple seeds was also high in the early growth stages, then decreased, and finally peaked at harvest. MeJA concentration in apple seeds increased towards harvest. In the seeds of sweet cherry, JA and MeJA concentrations generally increased until harvest. In both types of fruit, concentrations of JA and MeJA in the seeds were higher than those of pulp. On a dry weight basis, changes in concentration in the seeds preceded those in the pulp. These results demonstrate that relatively high amounts of JA and MeJA are associated with young developing fruit. These substances may have a role in regulation of fruit growth at early growth stages, though this has not been demonstrated. Chemical name used: n-propyl dihydrojasmonate (PDJ).

scholarly journals Relationship among specific leaf area, leaf nitrogen, leaf phosphorus and photosynthetic rate in herbaceous species of tropical dry deciduous in Vindhyan highlands

2017 ◽  
Vol 6 (2) ◽  
pp. 1531 ◽  
Author(s):  
Prajjwal Dubey ◽  
Raghubanshi A. S. ◽  
Anil K. Dwivedi*
Keyword(s):  
Leaf Area ◽  
Photosynthetic Rate ◽  
Specific Leaf Area ◽  
Pearson Correlation ◽  
Colorimetric Method ◽  
Correlation Coefficients ◽  
Ground Level ◽  
Dry Weight ◽  
Leaf Nitrogen ◽  
Herbaceous Species

A range of leaf attributes was measured for 17 herbaceous species in four contrasting habitats fortnightly from July to September during 2996-2007. All herbaceous vegetation in 5 randomly located plots within each of four sites were clipped at ground level and analyzed fortnightly. Leaf area was recorded by the leaf area meter (Systronics; Leaf area meter- 211). Fresh leaves were dried at 80o C for 48 hr to estimate their dry weight. Specific Leaf Area (SLA) was determined as ratio of leaf area to leaf dry weight. Leaf nitrogen was measured by Kjeldahl method and phosphorus by phosphomolybdic blue colorimetric method. The obtained values were subjected to Two- tailed Pearson correlation coefficients using SPSS (2004 ver. 13) package. SLA, leaf nitrogen, leaf phosphorus and photosynthetic rate show positive relationship with each other.

scholarly journals Bioaccumulation of Selected Metals and Non-Metals in Mycelium and Fruit Bodies of Ectomycorrhizal Fungi

2019 ◽  
Keyword(s):  
Forest Soil ◽  
Ectomycorrhizal Fungi ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Dry Weight ◽  
Dispersion Analysis ◽  
Bulk Soil ◽  
Spectrometric Method ◽  
Mass Spectrometric Method ◽  
Soil Fraction

Purpose. We attempted to quantify the contribution of wild-growing mycelium of ectomycorrhizal fungi to the soil level of selected metals and non-metals in upper (0−10 cm) layer of forest soil of boreal forest ecosystems. The content of selected elements were also analyzed and compared in such fractions of soil as bulk soil, rhizosphere and soil-root interface. Specifically we analyzed the content of phosphorus (P), manganese (Mn), iodine (I), chromium (Cr), nickel (Ni), copper (Cu), zinc (Zn), cadmium (Cd), cobalt (Co), mercury (Hg) lead (Pb) and arsenic (As). Methods. The concentration of the elements in the samples (dry weight, d.w.) was determined by the mass spectrometric method (ICP-MS) in the laboratory ALS Scandinavia AB, Luleå according to the method given in Rodushkin et al. [13]. Statistical data processing was performed using dispersion analysis (ANOVA) and Pearson correlation coefficients. Software Minitab (© 2010 Minitab Inc.). Results. It has been shown that concentration of phosphorus in the mycelium of fungi is about 1.5 times, and in the fruit bodies is about 7 times higher of that the plant plant tissue (soil+root interface). The concentration of manganese in the mycelium is about the same as in the bulk soil and much lower in the fraction of rhizosphere. Iodine, chromium and nickel are not accumulated, neither the mycelium of fungi nor in their fruitful bodies. Copper, zinc and cadmium are accumulated in both fruit bodies and mycelium of the studied species intensively. The concentration of cadmium in the mycelium is found to be about three times higher than in the bulk soil fraction, and about twice as high as in the fraction of rhizosphere. At such concentrations of cadmium in mycelium, the later may account from 16.2 to 32.3% of the total amount of cadmium in the upper, 0-10 cm layer of forest soils. The content of cobalt and mercury in the mycelium appeared to be somewhat higher in the bulk soil, about the same as in the rhizosphere fraction, and significantly higher than in the soil-root interface fraction. Fungi did not accumulate lead neither in the mycelium nor in their fruit bodies, whereas arsenic does not accumulated in soil-root interface and only weakly accumulated by fungal fruit bodies. Conclusions As a result of the study, it was found that the content of most of the analyzed metals and non-metals in the mycelium of ectomycorrhizal fungi of the upper (0-10 cm) soil enriched with organic matter in the forest ecosystem, except for cadmium and phosphorus, does not exceed 10% of their total amount. At the same time, the content of cadmium in the mycelium of fungi was the highest − 16.2 to 32.3%, which indicates the ability of fungi to accumulate this metal. It is suggested that the percentages of the content of the elements studied in the mycelium of upper layers of forest soil is rather underestimated than overestimated.

scholarly journals The after-effect of long-term reduced tillage systems on the biodiversity of weeds in spring crops

2012 ◽  
Vol 65 (1) ◽  
pp. 141-148 ◽  
Author(s):  
Andrzej Woźniak ◽  
Małgorzata Haliniarz
Keyword(s):  
Durum Wheat ◽  
Spring Wheat ◽  
Dry Weight ◽  
Reduced Tillage ◽  
Growth Stages ◽  
Weed Species ◽  
Tillage Systems ◽  
Herbicide Treatment ◽  
Dough Stage

A strictly controlled field experiment on traditional and reduced tillage systems as well as herbicide treatment was conducted at the Agricultural Experimental Station of Uhrusk in the years 2007-2011. In the last year of the experiment, the effect of different tillage systems on the level of weed infestation and biodiversity of weeds was determined in all the plots for the crop of common spring wheat <i>Triticum aestivum</i> L., spring durum wheat <i>Triticum durum</i> Desf., and oat <i>Avena sativa</i> L. at two growth stages: tillering (23/24 on BBCH scale) and dough stage (83/85). A higher number and higher air-dry weight of weeds were determined at tillering than at the dough stage. Long-term reduced tillage increased the number of weeds per 1m<sup>2</sup> at the tillering stage, contrary to herbicide treatment. At the dough stage, a higher number of weeds was observed in the herbicide treatment and reduced tillage plots compared to traditional tillage. The air-dry weight of weeds at the tillering and dough stages of cereals was significantly higher in the case of herbicide treatment than under the traditional and reduced tillage systems. Weed communities in spring wheat, durum wheat and oat included mostly annual weeds. A higher number of weed species was determined in the plot with long-term herbicide treatment than in the plots with reduced and traditional tillage systems.

scholarly journals Assessment of biological and agronomic diversity of seven durum wheat varieties cultivated in the Northeastern region of Algeria

2021 ◽  
Vol 22 (2) ◽  
Author(s):  
NABIL BOUDERSA ◽  
GHANIA CHAIB ◽  
ATOUI AICHA ◽  
RADIA CHERFIA ◽  
HANANE BOUDERBANE ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Soluble Sugars ◽  
Correlation Coefficients ◽  
Wheat Varieties ◽  
Chlorophyll Pigments ◽  
Northeastern Region ◽  
Relative Water ◽  
Variety Effect ◽  
Improvement Programs ◽  
Triticum Durum Desf

Abstract. Boudersa N, Chaib G, Atoui A, Cherfia R, Bouderbane H, Boudour L. 2021. Assessment of biological and agronomic diversity of seven durum wheat varieties cultivated in the Northeastern region of Algeria. Biodiversitas 22: 1025-1036. The present work was carried out during the 2017/2018 agricultural season, at the experimental station of the ‘Institut Technique des Grandes Cultures’ (ITGC) – El Khroub, Constantine, Algeria. The main objective of this study was the evaluation and the characterization of seven varieties of durum wheat (Triticum durum Desf.) in terms of their behavior and yield. For these reasons, several phenological, morpho-physiological, and biochemical traits, as well as the yield with its components were studied. The obtained results showed a significant variety effect, in particular, for the variables corresponding to the production and to the tolerance. The analysis of the correlation coefficients indicated that the number of spikes per m2, the number of grains spike-1, and the rate of chlorophyll pigments in the leaves were the most related characteristics to grain yield. Indirect selection for breeding productivity through these traits could prove to be effective. Besides, it revealed that tall varieties displayed better resistance to possible hazards; had high relative water content (RWC), accumulated more soluble sugars and proline, as well as, they showed a low level of Malondialdehyde (MDA) compared to other varieties. In addition, this study allowed us to determine many relationships between the studied parameters, that can make a contribution in both the productivity and the adaptation improvement programs of the durum wheat.

scholarly journals Submergence sensitivity of durum wheat, bread wheat and barley at the germination stage

2016 ◽  
Vol 11 (2) ◽  
pp. 100 ◽  
Author(s):  
Iduna Arduini ◽  
Cecilia Orlandi ◽  
Laura Ercoli ◽  
Alessandro Masoni
Keyword(s):  
Durum Wheat ◽  
Bread Wheat ◽  
Wheat Bread ◽  
Growth Stages ◽  
Initial Growth ◽  
Waterlogging Tolerance ◽  
Wheat Varieties ◽  
Winter Cereal ◽  
Winter Cereals ◽  
High Concern

Soil waterlogging at initial growth stages can cause heavy yield losses of winter cereals. Therefore, the screening for submergence tolerance traits in seeds of commercial varieties is of high concern worldwide. Ten Italian varieties of durum wheat (<em>Triticum durum</em> Desf.), bread wheat (<em>T. aestivum</em> L.) and barley (<em>Hordeum vulgare</em> L.) were investigated for their ability to germinate in submerged conditions and to recover after submergence periods of three to 15 days. Submergence prevented germination and decreased germinability, at rates that increased with duration of submergence. Sensitivity ranked in the order: barley &gt;durum wheat &gt;bread wheat. We related the higher sensitivity of barley to its slower germination and slightly higher leakage of electrolytes, whereas the percentage of abnormal seedlings was lower than in other species. It was less than 4%, compared to less than 15 and 8% in durum wheat and bread wheat, respectively. Wide varietal differences were found in all species. According to variety, after 6-day submergence, germinability ranged from 2 to 42% in barley, from 5 to 80% in durum wheat, and from 30 to 77% in bread wheat. Varieties with more than 40% seed survival were three, six and seven per species, in the same order. The differential submergence sensitivity of varieties indicates a potential to select for waterlogging tolerance within Italian genotypes of winter cereal crops.

scholarly journals Evaluating RGB Imaging and Multispectral Active and Hyperspectral Passive Sensing for Assessing Early Plant Vigor in Winter Wheat

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2931 ◽  
Author(s):  
Lukas Prey ◽  
Malte von Bloh ◽  
Urs Schmidhalter
Keyword(s):  
Plant Growth ◽  
Nitrogen Uptake ◽  
Low Cost ◽  
Canopy Cover ◽  
Dry Weight ◽  
Early Growth ◽  
Spectral Unmixing ◽  
Growth Stages ◽  
Plant Vigor ◽  
Red Edge

Plant vigor is an important trait of field crops at early growth stages, influencing weed suppression, nutrient and water use efficiency and plant growth. High-throughput techniques for its evaluation are required and are promising for nutrient management in early growth stages and for detecting promising breeding material in plant phenotyping. However, spectral sensing for assessing early plant vigor in crops is limited by the strong soil background reflection. Digital imaging may provide a low-cost, easy-to-use alternative. Therefore, image segmentation for retrieving canopy cover was applied in a trial with three cultivars of winter wheat (Triticum aestivum L.) grown under two nitrogen regimes and in three sowing densities during four early plant growth stages (Zadok’s stages 14–32) in 2017. Imaging-based canopy cover was tested in correlation analysis for estimating dry weight, nitrogen uptake and nitrogen content. An active Greenseeker sensor and various established and newly developed vegetation indices and spectral unmixing from a passive hyperspectral spectrometer were used as alternative approaches and additionally tested for retrieving canopy cover. Before tillering (until Zadok’s stage 20), correlation coefficients for dry weight and nitrogen uptake with canopy cover strongly exceeded all other methods and remained on higher levels (R² > 0.60***) than from the Greenseeker measurements until tillering. From early tillering on, red edge based indices such as the NDRE and a newly extracted normalized difference index (736 nm; ~794 nm) were identified as best spectral methods for both traits whereas the Greenseeker and spectral unmixing correlated best with canopy cover. RGB-segmentation could be used as simple low-cost approach for very early growth stages until early tillering whereas the application of multispectral sensors should consider red edge bands for subsequent stages.

scholarly journals Trait variations and expression profiling of OsPHT1 gene family at the early growth-stages under phosphorus-limited conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Annamalai Anandan ◽  
Chidambaranathan Parameswaran ◽  
Anumalla Mahender ◽  
Amaresh Kumar Nayak ◽  
Sampthamprajan Vellaikumar ◽  
...  
Keyword(s):  
Gene Family ◽  
Dry Weight ◽  
Early Response ◽  
Early Growth ◽  
Growth Stages ◽  
Significant Difference ◽  
Maximum Root Length ◽  
Use Efficiency ◽  
Maximum Root

AbstractTo better understand the early response of genotypes to limited-phosphorus (P) conditions and the role of the phosphate transporter OsPHT1 gene family in the presence of PSTOL1, it is essential to characterize the level of tolerance in rice under limited-P conditions. In the present experiment, six rice genotypes were studied in three-way interactions [genotype (G) × phosphorus (P) × duration (D)] by comparing them at two instances (14 d and 28 d) under seven different concentrations of P (0.5‒10.0 ppm) in a hydroponic system. Trait differences and interactions of these traits were clearly distinguished among the various P rates. However, aboveground trait expression registered increased growth from 6.0 to 10.0 ppm of P. The major root-attributed traits in 0.5 ppm of P are significantly increased vis-à-vis 10 ppm of P. Analysis of variance displayed a significant difference between the genotypes for PSTOL1 and PHT1 expression. In low P, maximum root length with a shoot and root dry weight was observed in a new indigenous accession, IC459373, with higher expression of PSTOL1 than in Dular and IR64-Pup1 in 0.5 ppm of P at 14 d. Among the 13 PHT1 genes, OsPT1, OsPT2, OsPT6, and OsPT13 showed significant upregulation in IC459373, Dular, and IR64-Pup1. These results indicated that studying the expression levels of the PSTOL1 and PHT1 gene family at the early growth stages would be helpful in identifying superior donors to improve low-P tolerance and P-use efficiency in rice breeding programs.

Mineral contents of forage pea – triticale intercropping systems harvested at different growth stages

2018 ◽  
Author(s):  
Ozlem Onal Asci ◽  
Zeki Acar ◽  
Yeliz Kasko Ariciy
Keyword(s):  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Quality Parameters ◽  
First Year ◽  
Growth Stages ◽  
Mineral Contents ◽  
Mixture Ratio ◽  
Boot Stage ◽  
Pisum Sativum L ◽  
Different Growth Stages

This study was conducted to determine the effects of mixture ratios and harvest times on mineral contents of forage pea – triticale mixtures hay. Leafed and semi-leafless pea (Pisum sativum L.) cultivars and triticale (xTriticosecale Wittmack) were sown in pure and in mixtures (75:25, 50:50, 25:75). Harvests were performed at boot and milk-dough stages of triticale. Experiments were conducted in randomized blocks design with 3 replications for 2 years. The data were subjected to ANOVA. Additionally, Pearson correlation coefficients were calculated between triticale ratios and quality parameters. 1n the first year at both harvest times of all mixtures; while Ca, Mg and Ca/P ratios decreased with increasing triticale ratios in mixture, K/(Ca+Mg) ratio increased with increasing triticale ratios in mixture ratio. Herbage mineral contents decreased with delaying harvest. It was concluded based on animal nutrition principles that triticale ratios of the mixtures should be limited and harvest should be performed at boot stage of triticale.

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