Maths content index

2014 ◽  
pp. 318-319
Keyword(s):  
Content Index

Iron Deficiency Chlorosis and Seed Yield in Dry Edible Beans Grown on High-pH Calcareous Soils

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 444f-445
Author(s):  
J.W. Gonzales ◽  
D.P. Coyne ◽  
W.W. Stroup
Keyword(s):  
Iron Deficiency ◽  
Chlorophyll Content ◽  
Seed Yield ◽  
Calcareous Soils ◽  
Yield Reduction ◽  
Iron Deficiency Chlorosis ◽  
Breeding Lines ◽  
High Ph ◽  
The Third ◽  
Content Index

Iron deficiency chlorosis (FeDC) can cause significant seed yield reduction in dry beans (Phaseolus vulgaris L.) grown on high-pH calcareous soils. To determine the effects of FeDC on seed yield, and the effect of Fe-spray as a correction factor for FeDC, 22 breeding lines/cultivars were planted on high-pH (8.0), calcareous (3.2–3.5 calcium carbonate equivalent), and low-Fe (1.8–4.2 ppm DTPA) sandy clay loam Tripp soils at Mitchell and Scottsbluff in western Nebraska. A split-plot design was used with Fe treatments as main plots and breeding lines/cultivars as subplots. Three foliar sprays of Fe-EDDHA (2.4 kg·ha–1) were applied at V4, R5, and R7 dry bean growth stages, during 1996 and 1997. Leaf chlorosis was measured simultaneously by using a Minolta Chroma-meter (CIE L* a* b* color space system), a Minolta Chlorophyll-meter (chlorophyll content index), and by visual ratings (1 = normal green to 5 = severe chlorosis). In 1996 no significant Fe-spray × line interaction (P = 0.776) and Fe-spray effect (P = 0.884) on seed yield was observed. Breeding lines showed significant differences in seed yield (P = 0.0001) with WM2-96-5 being the highest-yielding line (4047 kg·ha–1). In 1997 a significant Fe spray × line interaction (P = 0.029) was observed. The cultivar Chase without Fe spray (3375 kg·ha–1), and lines WM2-96-5 (3281 kg·ha–1), WM2-96-8 (3171 kg·ha–1) with Fe spray were the highest yielding entries under those treatments. Differences in visual ratings after the third Fe spray in 1997 were significant (P = 0.004) for Fe spray × line interaction. In 1996 visual ratings were different only for breeding lines. Chlorophyll content index showed a significant Fe spray × line interaction after the second Fe spray (P = 0.022) and after the third Fe spray (P = 0.0003) in 1997.

scholarly journals Physiological Responses of Salinized Fenugreek (Trigonellafoenum-graecum L.) Plants to Foliar Application of Salicylic Acid

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 657
Author(s):  
Reda E. Abdelhameed ◽  
Arafat Abdel Hamed Abdel Latef ◽  
Rania S. Shehata
Keyword(s):  
Salicylic Acid ◽  
Salt Stress ◽  
Foliar Application ◽  
Shikimic Acid ◽  
Plant Tolerance ◽  
Physiological Mechanisms ◽  
Content Index ◽  
Malondialdehyde Content ◽  
Total Free Amino Acids ◽  
The Impact

Considering the detrimental effects of salt stress on the physiological mechanisms of plants in terms of growth, development and productivity, intensive efforts are underway to improve plant tolerance to salinity. Hence, an experiment was conducted to assess the impact of the foliar application of salicylic acid (SA; 0.5 mM) on the physiological traits of fenugreek (Trigonellafoenum-graecum L.) plants grown under three salt concentrations (0, 75, and 150 mM NaCl). An increase in salt concentration generated a decrease in the chlorophyll content index (CCI); however, the foliar application of SA boosted the CCI. The malondialdehyde content increased in salt-stressed fenugreek plants, while a reduction in content was observed with SA. Likewise, SA application induced an accumulation of proline, total phenolics, and flavonoids. Moreover, further increases in total free amino acids and shikimic acid were observed with the foliar application of SA, in either control or salt-treated plants. Similar results were obtained for ascorbate peroxidase, peroxidase, polyphenol oxidase, and catalase with SA application. Hence, we concluded that the foliar application of SA ameliorates salinity, and it is a growth regulator that improves the tolerance of fenugreek plants under salt stress.

scholarly journals WINTER BEAN PRODUCTIVITY UNDER UROCHLOA STRAW FERTILIZED WITH NITROGEN

2016 ◽  
Vol 29 (1) ◽  
pp. 133-142
Author(s):  
NÍDIA RAQUEL COSTA ◽  
MARCELO ANDREOTTI ◽  
KENY SAMEJIMA MASCARENHAS LOPES ◽  
KAZUO LEONARDO ALMEIDA YOKOBATAKE ◽  
CÉSAR GUSTAVO DA ROCHA LIMA
Keyword(s):  
Dry Matter ◽  
Organic Residues ◽  
N Application ◽  
Application Rates ◽  
Bean Plants ◽  
Content Index ◽  
Forage Species ◽  
Urochloa Brizantha ◽  
Mg Content ◽  
Positive Effect

ABSTRACT: An experiment was conducted during the years 2009 and 2010 to evaluate the effects of Urochloa forage straw and nitrogen fertilization on soil properties, nutritional foliar content, index of foliar chlorophyll (IFC) values, production components, and grains yields of winter bean (Phaseolus vulgaris 'Pérola') in the Cerrado lowlands region of Brazil. The treatments consisted of planting bean crops under straw of Urochloa brizantha 'Xaraés' and Urochloa ruziziensis, fertilized with urea-sourced N (0, 50, 100, 150, and 200 kg N ha-1). The experimental design was randomized blocks with four replications, and a factorial scheme of 2 × 5. The greater yield of U. brizantha dry matter in the two years of evaluation increased bean leaf nutrient levels. The nutritional increase with increasing N application rates showed that the straw produced by the forages had a positive effect on bean nutrition. The grain yield was satisfactory but was not affected by the forage species nor by changes in the N application rates. The Urochloa straw increased the soil organic matter (SOM), Ca, and Mg content in both evaluated years, affected the decomposition and mineralization of organic residues, and ensured the proper development of the bean plants.

scholarly journals Desempenho morfofisiológico de cultivares de soja de ciclo médio em condições de alagamento do solo

2017 ◽  
Vol 12 (3) ◽  
pp. 385
Author(s):  
Marcos Paulo Ludwig ◽  
Sandro De Oliveira ◽  
Luis Osmar Braga Schuch ◽  
Francisco Jesus Vernetti Junior ◽  
Rogério Seus ◽  
...  
Keyword(s):  
Plant Height ◽  
Reproductive Stage ◽  
Main Stem ◽  
Vegetative Stage ◽  
Cultivation Condition ◽  
Soil Flooding ◽  
Soybean Cultivars ◽  
Content Index ◽  
Crop Cycle ◽  
Stem Chlorophyll

<p>O aumento no cultivo de soja no Brasil têm atingido áreas antes utilizadas para outros fins, como em regiões de solos de várzea, estando assim, sujeita a eventuais alagamentos do solo. Este trabalho objetivou avaliar alterações morfofisiológicas em cultivares de soja de ciclo médio, em condições de alagamento do solo, nos estádios fenológicos vegetativo e reprodutivo para recomendação de cultivares. Os experimentos foram conduzidos na Estação Experimental de Terras Baixas, da Embrapa Clima Temperado em Capão do Leão, RS. Foram aplicados três sistemas de manejo da água: condição normal de cultivo (sem alagamento), alagamento no período vegetativo (V3/V4) e alagamento no período reprodutivo (R2/R3). As avaliações realizadas durante o ciclo da cultura foram: altura de plantas, diâmetro da haste principal, índice do teor de clorofila, fenologia e número de nós nas hastes por planta. O alagamento do solo reduz o número de nós na haste principal, reduzindo a estatura das plantas, sendo os efeitos mais acentuados quando o alagamento ocorre no estádio vegetativo. Além disso, o alagamento do solo no período reprodutivo promove aumento do diâmetro da haste principal. O alagamento do solo causa retardamento de ocorrência dos estádios fenológicos, bem como do ciclo total das cultivares de soja.</p><p align="center"><strong><em>Morphophysiological performance of medium cycle soybean cultivars under flooding</em></strong><strong><em></em></strong></p><pre><strong>Abstract: </strong>The increase in soybean cultivation in Brazil has reached areas previously used for other purposes, such as in regions of lowland soils, thus being subject to possible soil flooding. This study aimed to evaluate morphophysiological changes in medium cycle soybean cultivars, under soil flooding conditions, in the vegetative and reproductive stages to recommend cultivars.<strong> </strong>The experiments were conducted at the Estação Experimental de Terras Baixas, EMBRAPA Clima Temperado in the Capão do Leão city, RS. Three water management systems were applied: normal cultivation condition (without flooding), flooding in the vegetative stage (V3 / V4) and flooding during the reproductive stage (R2 / R3). During the crop cycle, plant height, diameter of the main stem, chlorophyll content index, phenology and number of nodes in the stem per plant were collected. On the basis of the results this study, it can be concluded that he flooding reduces the number of nodes on the main stem, reducing plant height, with the most pronounced effects when flooding occurs in the vegetative stage. Furthermore, flooding the reproductive stage promotes increased diameter of the main stem. Flooding causes delay of occurrence of phenological stages and the total cycle of soybean cultivars.</pre>

scholarly journals Study of the gene pool of the winter rye Secale cereale L. of the Republic of Belarus using microsatellite markers

2021 ◽  
Vol 66 (2) ◽  
pp. 215-222
Author(s):  
V. S. Mandrusova ◽  
I. S. Gordej ◽  
O. M. Lyusikov ◽  
V. E. Shimko ◽  
I. A. Gordej
Keyword(s):  
Genetic Diversity ◽  
Microsatellite Markers ◽  
Ssr Markers ◽  
Gene Pool ◽  
Winter Rye ◽  
Interpopulation Variability ◽  
Content Index ◽  
Secale Cereale L ◽  
New Varieties ◽  
The Republic

In this work, the genetic diversity of the modern gene pool of the winter rye (S. cereal L.) of the Republic of Belarus from 20 actual breeding samples was investigated using 15 microsatellite (SSR) markers to develop divergent crossing combinations in breeding for heterosis. It was shown that the formed set of SSR markers is highly effective – the informational content index (PIC) varied from 0.50 to 0.83 and averaged 0.72. The most effective microsatellite markers (SCM28, SCM43, SCM101 and SCM102) were identified and can be successfully used to study the genetic diversity of rye. It has been established that the modern gene pool of the winter rye of the Republic of Belarus is generally characterized by fairly wide genetic diversity (interpopulation variability) – all collection samples are characterized by a unique allelic composition of the studied microsatellite loci. Based on investigation results, a hierarchical clustering dendrogram was constructed, which made it possible to determine the most genetically divergent combinations of crosses. The information obtained can be used for the development of an effective scheme allowing to develop new varieties and hybrids in the practical breeding of rye for heterosis.

scholarly journals CONTENT INDEX for HEART VESSELS TRANSPLANTATION VOLUME 1, 2017

2018 ◽  
Vol 0 (Ahead of Print) ◽  
Author(s):  
Gulmira Kudaiberdieva
Keyword(s):  
Content Index

scholarly journals Relation of leaf water content with real evapotranspiration and biomass in Caatinga biome, using remote sensing data

2017 ◽  
Vol 10 (5) ◽  
pp. 1545
Author(s):  
Josiclêda Domiciano Galvíncio
Keyword(s):  
Energy Balance ◽  
Water Content ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Surface Energy Balance ◽  
Climatic Variability ◽  
Leaf Water ◽  
Leaf Water Content ◽  
Content Index ◽  
Caatinga Biome

R E S U M OA Caatinga é um biome que sofre com grande variabilidade climática anual e intraanual. Essa variabilidade climática faz com que o bioma em grande parte do ano sofra com grande estresse hídrico. Estudar as relações existentes entre o conteúdo de água na planta e outras variáveis do ecossistemas, tais como: biomassa e evapotranspiração pode auxiliar e prever impactos da escassez hídrica e seca climatológica sobre a produção de biomassa do bioma Caatinga. Assim, este estudo pretende analisar as relações existentes entre o conteúdo de água na folha com a biomassa e evapotranspiração em área do bioma caatinga localizado em São José do Sabugi, Paraiba, Brasil. Foi utilizado o algoritmo SEBAL-Surface Energy Balance para estimar a evapotranspiração e o foram calculados os índices de vegetação NDVI- Normalized Difference Vegetation Index, SAVI- Soil Adjusted Vegetation Index e o índice de conteúdo de água na folha LWCI- Leaf Water Content Index. Os resultados mostraram uma boa relação existente entre os índices de vegetação e o conteúdo de água na folha, sendo r=0.76 para o SAVI e 0.64 para o NDVI. Para a evapotranspiração a correlação foi de r =0.386. Conclui-se que a quantidade de água na folha está altamente correlacionada com a biomassa.Palavra chave: bioma, sazonalidade, seca, semiárido. A B S T R A C TThe Caatinga is a biome that suffers from high annual and intra-annual climatic variability. This climatic variability makes the biome in great part of the year suffer with high great water stress. To study the relationships between water content in the plant and other ecosystem variables, such as: biomass and evapotranspiration can help and predict impacts of water scarcity and climatological drought on the biomass production of the Caatinga biome. Thus, this study intends to analyze the relationship between water content in the leaf with biomass and evapotranspiration in the area of the caatinga biome located in São José do Sabugi, Paraiba, Brazil. The SEBAL-Surface Energy Balance algorithm was used to estimate the evapotranspiration and NDVI-Normalized Difference Vegetation Index, SAVI-Soil Adjusted Vegetation Index and the water content index in the LWCI- Leaf Water Content Index. were calculated. The results showed a good relationship between vegetation index and leaf water content, with r = 0.76 for SAVI and 0.64 for NDVI. For evapotranspiration the correlation was r = 0.386. It is concluded that the amount of water in the leaf is highly correlated with the biomass.Keywords: biome, seasonality, dry, semiarid

Rorschach Trauma Content Index--French Version

2019 ◽  
Author(s):  
Sara De Michèle ◽  
Bernard Kabuth ◽  
Orlane Plun ◽  
Loïc Le Moal ◽  
Fanny Laurent ◽  
...  
Keyword(s):  
French Version ◽  
Content Index

scholarly journals Salicylic acid and jasmonic acid alter physiological performance, assimilate mobilization and seed filling of soybean under salt stress

2018 ◽  
Vol 111 (3) ◽  
pp. 597 ◽  
Author(s):  
Kazem GHASSEMI-GOLEZANI ◽  
Salar FARHANGI-ABRIZ ◽  
Ali BANDEHAGH
Keyword(s):  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Leaf Area ◽  
Specific Leaf Area ◽  
Relative Water Content ◽  
Seed Mass ◽  
Seed Filling ◽  
Leaf Mass ◽  
Content Index ◽  
Relative Water

<p>This research was conducted to investigate the morpho-physiological effects of salicylic acid and jasmonic acid on soybean performance and productivity under salinity. Leaf chlorophyll content index, carotenoids and anthocyanins content, photosystem II efficiency, relative water content, leaf area, leaf mass, specific leaf area, water use efficiency, seed filling duration, assimilate mobilization efficiency and seed mass decreased, but leaf temperature, specific leaf mass and electrolytic leakage of leaves increased with enhancing salinity. Salicylic acid improved leaf chlorophyll content index, anthocyanins content, leaf area, specific leaf area, water use efficiency, seed filing duration, assimilate mobilization efficiency and seed mass under both saline and non-saline conditions. The superior effects of salicylic acid on some traits such as maximum quantum yield of PSII, relative water content and leaf electrolytic leakage only occurred under different salinity levels. Jasmonic acid improved leaf mass, specific leaf mass, carotenoids content, relative water content, seed filling rate and reduced chlorophyll content index, leaf temperature, leaf area, specific leaf area, seed filling duration, assimilates mobilization efficiency and relative electrolytic leakage of soybean, with no significant effects on photosystem II efficiency and seed mass. Application of salicylic acid was, therefore, the superior treatment for enhancing physiological performance and seed mass of soybean plants under different salinity levels.</p>

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