scholarly journals Vegetative Development and Nutrient Absorption March of Sorrel (Rumex acetosa L.)

2019 ◽  
Vol 11 (4) ◽  
pp. 262
Author(s):  
Maria Angélica Suedan Souza Lima ◽  
Anastácia Fontanetti ◽  
Márcio Roberto Soares ◽  
Rodrigo Gazaffi ◽  
Nathalia de França Guimarães ◽  
...  
Keyword(s):  
Leaf Area ◽  
Leaf Blade ◽  
Herbaceous Plant ◽  
Rumex Acetosa ◽  
Vegetative Development ◽  
Blade Length ◽  
Perennial Herbaceous Plant ◽  
Biometric Parameters ◽  
Significant Difference ◽  
Plant Collection

Sorrel (Rumex acetosa L.) is an unconventional food plant. It is a perennial herbaceous plant that forms thickets. There are studies related to the accumulation of nutrients in sorrel, but there is no information on its absorption march and vegetative development. The objective of this study is to determine macronutrient absorption and biometric parameters of sorrel during 60 days after seedling transplantation (DAT) of seedlings. The experiment was completely randomized with eight treatments and four replications. It was conducted in a greenhouse. The treatments consisted of plant collection times, performed at 15, 20, 25, 30, 35, 40, 50 and 60 DAT. Plants’ biometric parameters (leaf blade length, relative leaf area, and shoot fresh and dry matter) and macronutrient absorption march were evaluated. Biomass, leaf blade length and relative leaf area of sorrel plants increased over time and, more markedly, after 35 DAT. The maximum levels of macronutrients accumulated in sorrel shoots, in descending order, were K > N > Ca > Mg > P > S. There was no significant difference in Ca and S contents among collection times, that is, the absorption and accumulation of these nutrients by sorrel did not vary throughout the evaluation time.

scholarly journals Bioregulators Can Improve Biomass Production, Photosynthetic Efficiency, and Ornamental Quality of Gazania rigens L.

Agronomy ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 773 ◽  
Author(s):  
Faisal Zulfiqar ◽  
Adnan Younis ◽  
Zainul Abideen ◽  
Alessandra Francini ◽  
Antonio Ferrante
Keyword(s):  
Leaf Area ◽  
Leaf Gas Exchange ◽  
Herbaceous Plant ◽  
Display Time ◽  
Higher Plant ◽  
Perennial Herbaceous Plant ◽  
Potted Plants ◽  
Root Shoot Ratio ◽  
Shoot Mass

Gazania rigens L. is a perennial herbaceous plant that belongs to the Asteraceae family, widely used as bedding or ornamental potted plants. The environmental and economic sustainability of ornamental production can be enhanced using environmentally friendly bioregulators. A pot experiment was conducted to evaluate the influence of key bioregulators gibberellic acid ((GA3) at 50, 100 or 150 mg L−1), humic acid ((HA) at 100, 300 or 600 mg L−1), and ascorbic acid ((AA) at 50, 100 or 200 mg L−1)), on the growth, leaf gas exchange, and ornamental quality of G. rigens. The results indicated that plants treated with foliar applications of GA3, HA, or AA exhibited higher plant fresh and dry biomass, plant height, leaf area, and leaf area ratio, root-shoot ratio, root-shoot mass fractions, and number of flowers, as well as the flowers display time. All bioregulator treatments enhanced the vegetative and floral characteristics of Gazania plants. The GA3 was the most efficient at the concentration of 100 mg L−1. The highest efficacy of HA and AA treatments was observed at the higher concentrations, 600 and 200 mg L−1, respectively. These results were associated with higher photosynthetic rate (A), transpiration rate (E) as well as stomatal conductance (gs), and water use efficiency (WUE). In conclusion, the results suggest that foliar-applied bioregulators to Gazania are promising and represent sustainable strategies to enhance growth, flowering, and flower display time of Gazania plants.

scholarly journals Accuracy of using leaf blade length and leaf blade width measurements to calculate the leaf area of Solanum aethiopicum Shum group

Heliyon ◽  
2018 ◽  
Vol 4 (12) ◽  
pp. e01093
Author(s):  
Mildred Julian Nakanwagi ◽  
Godfrey Sseremba ◽  
Nahamya Pamela Kabod ◽  
Michael Masanza ◽  
Elizabeth Balyejusa Kizito
Keyword(s):  
Leaf Area ◽  
Leaf Blade ◽  
Blade Length ◽  
Solanum Aethiopicum ◽  
Blade Width ◽  
Width Measurements

scholarly journals Relevance of leaf morphology and biometrics: a study with species of Aphelandra R. Br. (Acanthaceae)

2021 ◽  
Vol 9 (4) ◽  
pp. 317-321
Author(s):  
Livia Zottele ◽  
Elisa Mitsuko Aoyama ◽  
Alexandre Indriunas
Keyword(s):  
Leaf Blade ◽  
Leaf Morphology ◽  
Morphological Characteristics ◽  
Biometric Data ◽  
Blade Length ◽  
Biometric Parameters ◽  
Total Length ◽  
Standard Deviations ◽  
Morphological Patterns

Morphological characteristics, as well as biometrics, govern the description of species. However, systematical comparative analyzes of these aspects between taxa are scarce. The aim of the work was to evaluate the relevance of these characteristics in species of Aphelandra. Leaves of A. longiflora, A. harleyi, A. espirito-santensis, A. nitida, A. sinclairiana and A. squarosa were collected and analyzed for morphologic patterns: phyllotaxis, texture, leaf blade form, symmetry, apex, base, margin, venation and coloring pattern; and for biometric parameters: total length, length and width of the leaf blade, length and diameter of the petiole. We calculated mean and standard deviations. Among the relevant morphological patterns are the shape of the blade, apex and base, and the biometric data showed differences. As conclusion, this analysis proposal proves to be an instrument of accuracy and detail for descriptions.

scholarly journals Selection and validation of appropriate reference genes for RT-qPCR analysis of flowering stages and different genotypes of Iris germanica L

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yinjie Wang ◽  
Yongxia Zhang ◽  
Qingquan Liu ◽  
Haiying Tong ◽  
Ting Zhang ◽  
...  
Keyword(s):  
Reference Genes ◽  
Molecular Mechanisms ◽  
Gene Selection ◽  
Expression Patterns ◽  
Herbaceous Plant ◽  
Flower Bud ◽  
Perennial Herbaceous Plant ◽  
Iris Germanica ◽  
Accurate Normalization ◽  
Suitable Reference

AbstractIris germanica L. is a perennial herbaceous plant that has been widely cultivated worldwide and is popular for its elegant and vibrantly colorful flowers. Selection of appropriate reference genes is the prerequisite for accurate normalization of target gene expression by quantitative real-time PCR. However, to date, the most suitable reference genes for flowering stages have not been elucidated in I. germanica. In this study, eight candidate reference genes were examined for the normalization of RT-qPCR in three I. germanica cultivars, and their stability were evaluated by four different algorithms (GeNorm, NormFinder, BestKeeper, and Ref-finder). The results revealed that IgUBC and IgGAPDH were the most stable reference genes in ‘00246’ and ‘Elizabeth’, and IgTUB and IgUBC showed stable expression in ‘2010200’. IgUBC and IgGAPDH were the most stable in all samples, while IgUBQ showed the least stability. Finally, to validate the reliability of the selected reference genes, the expression patterns of IgFT (Flowering Locus T gene) was analyzed and emphasized the importance of appropriate reference gene selection. This work presented the first systematic study of reference genes selection during flower bud development and provided guidance to research of the molecular mechanisms of flowering stages in I. germanica.

scholarly journals Medium-grown daylily flowering in the Republic of Mari El

2020 ◽  
pp. 1-6
Author(s):  
Mariya Aleksandrovna Okach ◽  
Svetlana Valer'evna Mukhametova ◽  
Kseniya Valentinovna Kharisova ◽  
Anastasiya Sergeevna Polkanova ◽  
Gul'nara Il'darovna Yakupova
Keyword(s):  
Late Summer ◽  
Continuous Series ◽  
Herbaceous Plant ◽  
Flowering Period ◽  
State University ◽  
Perennial Herbaceous Plant ◽  
University Of Technology ◽  
Country Club ◽  
Beginning Of Flowering ◽  
The Republic

Daylily (Hemerocallis) is a perennial herbaceous plant widely used in landscape gardening. Daylilies are prized for their long term flowering mainly in late summer and low maintenance cultivation. According to flower spike height, the varieties are divided into runt, medium-growing and tall. The article contains the results of the study of 21 medium-growing daylily varieties’ terms of flowering in the botanic garden of the Volga region State University of Technology (Yoshkar-Ola, the Republic of Mari El). The research was conducted in 2015 - 2017. The calendar dates were converted into a continuous series. All varieties were classified as early, medium or late according to the terms of the beginning and the end of flowering and its duration. During three years of research, the earliest beginning of the phenological phase was registered in 2016, and the latest one  - in 2017. The early beginning and ending of flowering were typical for the varieties “Dr Regel” and “Royal Sovereign”. The late beginning of flowering was registered for the “Country Club” variety, and the late ending - for “Sandalwood”. Other varieties were classified as medium-term. The varieties “Royal Sovereign”, “Tejas”, and “Sugar Candy” are characterized by a short flowering period, while “Sandalwood” and “Derby Bound” - with a long one. It was established that the late-flowering varieties are characterized with a longer flowering period.

scholarly journals The effect of the height gradient on morphological traits of Dracocephalum nutans L.

2021 ◽  
Vol 38 ◽  
pp. 00024
Author(s):  
Gulnora Denisova ◽  
Safarbek Rahimov
Keyword(s):  
Morphological Traits ◽  
Leaf Blade ◽  
Morphological Characters ◽  
Altitude Gradient ◽  
Blade Length ◽  
Wide Range ◽  
Inflorescence Length ◽  
Height Factor

Individuals of Dracocephalum nutans L. have been studied at different altitude levels from 460 to 2437 m above the level seas. The influence of the height gradient on morphological characters has been shown: the number of generative and vegetative shoots, the height of the generative shoot, the length and width of the leaf blade, length of its petiole, and inflorescence length. It was found that the height gradient has the greatest influence on the height of the generative shoot and the length of the inflorescence. When individuals grow higher along the altitude gradient, the height of the generative shoot and the length of the inflorescence decrease. The fluctuation of the average values of the traits of D. nutans in a wide range was established. The intrapopulation analysis of D. nutans individuals does not depend on the height factor.

scholarly journals Whole-plant Response of Six Poinsettia Cultivars to Three Fertilizer and Two Irrigation Regimes

1996 ◽  
Vol 121 (1) ◽  
pp. 69-76 ◽  
Author(s):  
Ursula Schuch ◽  
Richard A. Redak ◽  
James Bethke
Keyword(s):  
Leaf Area ◽  
Chlorophyll Content ◽  
Dry Weight ◽  
Shoot Biomass ◽  
Vegetative Development ◽  
Chlorophyll Contents ◽  
Shoot Dry Weight ◽  
Irrigation Regimes ◽  
Whole Plant ◽  
Leaf N

Six cultivars of poinsettia (Euphorbia pulcherrima Wind.), `Angelika White', `Celebrate 2', `Freedom Red', `Lilo Red', `Red Sails', and `Supjibi Red' were grown for 9 weeks during vegetative development under three constant-feed fertilizer treatments, 80,160, or 240 mg N/liter and two irrigation regimes, well-watered (high irrigation) or water deficient (low irrigation). Plants fertilized with 80 or 240 mg N/liter were 10% to 18% shorter, while those fertilized with 160 mg N/liter were 25 % shorter with low versus high irrigation. Leaf area and leaf dry weight increased linearly in response to increasing fertilizer concentrations. Low irrigation reduced leaf area, leaf, stem, and shoot dry weight 3670 to 41%. Cultivars responded similarly to irrigation and fertilizer treatments in all components of shoot biomass production and no interactions between the main effects and cultivars occurred. Stomatal conductance and transpiration decreased with increasing fertilizer rates or sometimes with low irrigation. Highest chlorophyll contents occurred in leaves of `Lilo Red' and `Freedom Red'. Leaves of plants fertilized with 80 mg N/liter were deficient in leaf N and had 40 % to 49 % lower leaf chlorophyll content compared to plants fertilized with 160 or 240 mg N/liter. Irrigation had no effect on leaf N or chlorophyll content. At the end of the experiment leaves of `Supjibi Red' and `Angelika White' contained higher concentrations of soluble proteins than the other four cultivars.

scholarly journals Effect Of Sowing Norms On Biometric Indicators, Yield And Grain Quality Parametres Of Darmon Variety Of Lentil Sown In Autumn And Spring

2021 ◽  
Vol 03 (08) ◽  
pp. 9-13
Author(s):  
Kurbonov A.A. ◽  
◽  
Atabayeva H.N. ◽  
Khayrullayev S.Sh. ◽  
◽  
...  
Keyword(s):  
Leaf Area ◽  
Grain Quality ◽  
External Factors ◽  
High Demand ◽  
Biometric Parameters ◽  
Germinated Seeds

This article provides information on the effect of sowing 2.0, 3.0, 4.0 million germinated seeds of lentils "Darmon" in autumn and spring on the biometric parameters of the plant. In Darmon variety of lentils, the height of the stem was 51.1-58.8 cm in autumn, 43.7-52.2 cm in spring, the leaf area was 23.2-35.8 thousand m3 in autumn and 22.2-33.7 thousand m3 in spring. As a result of symbiotic activity, the weight of nodules in the autumn was 3.17-4.52 c / ha, in the spring - 2.82-3.98 c / ha, and per thousand grains - 78.9 -81.9 grams in the autumn and 78.5-81.1 grams in the spring. It was found that as the number of seedlings increased, the weight of thousands of grains on the options decreased due to lack and high demand of nutrients. The same pattern was observed in the location of the first pod in both periods, but in the spring due to external factors the location of the lower pod was slightly higher, the yield in the autumn was 24.3-27.4 c / ha, and in the spring - 17.1-20.3 c / ha, and the best result was found to be obtained when seeds were sown on 3 million pieces/ha.

scholarly journals Bazı Üzüm Çeşitlerinde ve Asma Anaçlarında Yaprak Alanının Belirlenmesi

2020 ◽  
Vol 8 (6) ◽  
pp. 1261-1265
Author(s):  
Adem Yağcı ◽  
Seda Sucu ◽  
Namık Yıldız
Keyword(s):  
Leaf Area ◽  
Leaf Blade ◽  
Optimum Level ◽  
Node Number ◽  
Average Value ◽  
Blade Width ◽  
Actual Field ◽  
Photosynthesis Capacity ◽  
Stem Leaf ◽  
Real Area

The amount and area of the leaves should be at an optimum level in order to maintain the product quality and not to adversely affect the vine growth. Because carbohydrates, which are essential for omca and are mostly stored in fruit and wood, are formed by leaves after photosynthesis. Leaf area can be used in many areas. Among these, photosynthesis capacity and plant growth rate may. Various tools and methods (planimetry, leaf area meter, width-product, weight-area calculation, image processing programs, etc.) are used in determining leaf area. In this study, 3 American grape rootstocks (5BB, 110 R, 1103 P) and 5 grapes (Alphonse Lavallée, Italıa, Mıchele Palierı and Narince, Yalova İncisi) were used as material. 20 shoots with 15-25 nodules were taken from the rootstocks and varieties of the omca and the leaves were photocopied according to the order of the node. The actual field values of the leaves were measured with a planimeter. Leaf stem and leaf width and length of the leaves were also measured. Regression analysis was performed between leaf stem, leaf blade width and length, leaf blade × length values and real area. The maximum leaf area on one shoot was 5 BB (2484 cm2) from rootstocks and Narince (2126 cm2) from varieties. All three rootstocks gave the average value of the leaf found in 9th node. In terms of node number, which gives an average value according to the varieties, Alphonse Lavallée, Mıchele Palierı and Yalova İncisi varieties came to the forefront in 11th node. The 13th in Narince cultivar and the 12th in Italia cultivar gave the closest value to the average.

scholarly journals Estimation of leaf area of Erythroxylum citrifolium from linear leaf dimensions

2019 ◽  
Vol 35 (6) ◽  
Author(s):  
João Everthon da Silva Ribeiro ◽  
Ester dos Santos Coêlho ◽  
Francisco Romário Andrade Figueiredo ◽  
Sérgio de Faria Lopes ◽  
Manoel Bandeira de Albuquerque
Keyword(s):  
Leaf Area ◽  
Leaf Blade ◽  
Information Criterion ◽  
Coefficient Of Determination ◽  
Concordance Index ◽  
R And D ◽  
Linear Dimensions ◽  
Bias Index ◽  
Linear Leaf ◽  
Leaf Dimensions

Erythroxylum citrifolium is a neotropical plant species recorded in all regions of Brazil. Determining leaf area is of fundamental importance to studies related to plant propagation and growth. The objective was to obtain an equation to estimate the leaf area of E. citrifolium from linear dimensions of the leaf blade (length and width). A total of 200 leaf blades were collected in Parque Estadual Mata do Pau-Ferro in the municipality of Areia, state of Paraíba, Northeast Brazil. The models evaluated were: linear, linear without intercept, quadratic, cubic, power and exponential. The best model was determined by the criteria of: high coefficient of determination (R²), low root mean square error (RMSE), low Akaike information criterion (AIC), high Willmott concordance index (d) and a BIAS index close to zero. All of the models constructed satisfactorily estimated the leaf area of E. citrifolium, with coefficients of determination above 0.9050, but the power model using the product between length and width (L*W) ŷ = 0.5966 * LW1.0181 was the best, with the highest values of R² and d, low values of RMSE and AIC, and a BIAS index closest to zero.

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