scholarly journals Pendugaan Luas Daun Tanaman Talas (Colocasia esculenta)

2020 ◽  
Vol 25 (4) ◽  
pp. 610-617
Author(s):  
Yusi Nurmalita Andarini ◽  
Higa Afza ◽  
Sutoro Sutoro
Keyword(s):  
Leaf Area ◽  
Germplasm Collection ◽  
Leaf Length ◽  
Nondestructive Method ◽  
Gene Bank ◽  
Leaf Width ◽  
Model Estimation ◽  
Independent Variables ◽  
Length Width ◽  
Better Than

  Estimation of leaf area by using leaf length and leaf width variables could be done without destruction of the leaves from plants and more practical than using the leaf areameter. Surface area is a function of the variable length and width, so the leaf area can be measured based on leaf length and leaf width variables. The purpose of this research is to get the leaf area estimator model with nondestructive method. Taro plants were observed by using 12 accessions/varieties taken from the germplasm collection in Gene Bank Collection of ICABIOGRAD, IAARD. Observations of the length, width, and area of leaf were carried out on 10-12 leaf samples for each accession/variety from taro cultivation which was about 4 months old. The length (P), width (L), and area (Y) of each taro leaf were measured. The estimation of taro leaves area by regression equation was analyzed by using one (P or L) and two (P and L) independent variables. Estimation using two variables, leaf length and width, is better than only use one variable. Taro leaf area (Y) of each leaf can be determined by the equation Y = 0.9462 P x L for ratio of P/L less than 1.10, Y = 0.9109 P x L for ratio of P/L between 1.10-1.19, and Y = 0.8860 P x L for ratio of P/L equal or greater than 1.20. Keywords: model estimation, leaf area, taro

scholarly journals Non-destructive models for leaf area determination in canola

2016 ◽  
Vol 20 (6) ◽  
pp. 551-556 ◽  
Author(s):  
Francilene de L. Tartaglia ◽  
Evandro Z. Righi ◽  
Leidiana da Rocha ◽  
Luis H. Loose ◽  
Ivan C. Maldaner ◽  
...  
Keyword(s):  
Leaf Area ◽  
Leaf Length ◽  
Phenological Stages ◽  
Gas Exchanges ◽  
Independent Variables ◽  
Length Width ◽  
Leaf Dimensions ◽  
Non Destructive ◽  
Important Structure ◽  
Area Determination

ABSTRACT The leaf is a very important structure of the plants, since it allows gas exchanges and the transformation of light energy into chemical energy. This study aimed to generate and test mathematical models for leaf area estimation in canola based on leaf dimensions. Two experiments were conducted with canola in 2014, in which leaves were collected in different phenological stages with different sizes and shapes. Subsequently, leaf length, width and area were measured (with automatic meter) in 606 leaves, which included 371 ovate and 235 lanceolate leaves. The models were generated using length, width and length versus width as independent variables and leaf area as dependent variable. The models were validated using a group of leaves different from those used to generate the models. A total of 27 models were obtained and those with best statistics and higher simplicity were selected. The polynomial model LA = 0.88735 W2 + 0.93503 W and the power model LA = 1.1282 W1.9396 can be used for both types of leaves and have high accuracy in the estimation of canola leaf area.

scholarly journals Effects of Seeds Source and Manure Type on Germination and Early Growth of Khaya senegalensis (Desr) A. Juss Seedlings in Bauchi State, Nigeria

2019 ◽  
pp. 1-10
Author(s):  
E. M. Abubakar ◽  
E. K. Rabo
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Early Growth ◽  
Leaf Length ◽  
Leaf Width ◽  
Deciduous Tree ◽  
Cow Dung ◽  
Khaya Senegalensis ◽  
Number Of Leaves ◽  
Collar Diameter

Khaya senegalensis (Desr) A. Juss is a perennial deciduous tree which has many uses in developing nations. The population of the tree is rapidly declining due to no conservation efforts to prevent the species from endanger and extinction. At the moment there is dearth information on manure types required to raise healthy seedlings of the tree species in the study area. To conserve this genetic resource, germination and early growth rate experiment was carried out using seeds collected from three locations (eco-zones) (Alkaleri, Bauchi and Toro). Matured seeds of K. senegalensis were collected from mother tree stand in the three locations. One hundred and fifty seeds (150) from each location were sown in perforated polythene pots at an average depth of 2-3 cm. After germination i.e. 30 days after planting, different manures were applied to the seedlings. The experiment was laid out in a Completely Randomized Design (CRD) with three treatments, namely: poultry dung, cow dung and NPK manures; the experiment was replicated four times. Data on seeds germination variables of interest (seedling heights, number of leaves, collar diameter, leaf area, leaf width, leaf length and fresh weights) were measured. Seedlings height were measured using meter rule, collar diameters using a venier caliper, numbers of leaves were determined by manual counting the number of leaves on the seedlings, leaf area was measured by tracing leaves of seedling on a graduated graph sheet. Data collected on seed germination and early growth rate were subjected to descriptive statistics and inferential statistics (ANOVA). Where significant differences occurred, Tukey test was used to separate the means. Based on this finding, germination of seeds commenced after 10 to 14 days. Locations and manure types had significant effects on the mean heights, number of leaves, collar diameter, leaf area, leaf width, length and fresh weights of K. senegalensis seedlings in the study area. Thus, for species conservation and genetic heredity, seeds sourced from Bauchi eco-zone was the best with poultry manure as the best performed manure for the raising of K. senegalensis seedlings in the study area.

scholarly journals Phenotypic Variation in Leaf Morphology of the USDA, ARS Sweetpotato (Ipomoea batatas) Germplasm Collection

HortScience ◽  
2020 ◽  
Vol 55 (4) ◽  
pp. 465-475 ◽  
Author(s):  
D. Michael Jackson ◽  
Howard F. Harrison ◽  
Robert L. Jarret ◽  
Phillip A. Wadl
Keyword(s):  
Ipomoea Batatas ◽  
Agricultural Research ◽  
Germplasm Collection ◽  
Plant Introduction ◽  
Leaf Length ◽  
Leaf Width ◽  
Department Of Agriculture ◽  
Leaf Petiole ◽  
Plant Characteristics ◽  
Agricultural Research Service

During 2012–14, 737 sweetpotato, Ipomoea batatas (L.) Lam. (Convolvulaceae), plant introduction (PI) accessions from the U.S. Department of Agriculture, Agricultural Research Service (USDA, ARS) sweetpotato germplasm collection were evaluated for several phenotypic leaf and plant characteristics, and a photographic record of each accession was made. Data were prepared for placement in the USDA, ARS Germplasm Resources Information Network (GRIN) database and the sweetpotato ontology. The parameters recorded for each genotype were canopy coverage, vine length, general leaf outline, leaf lobing, shape of the central leaf lobe, number of leaf points, leaf petiole length, leaf width, leaf length, leaf width × length, and leaf width/length (aspect ratio). The data indicate that there is wide genetic diversity for vegetative phenotypic characteristics within the USDA, ARS sweetpotato germplasm collection. This study provides important phenotype information for the USDA, ARS sweetpotato collection that has been lacking and can be used for curation of the collection and by researchers and breeders working with this important global food crop.

Stability, correlation and path coefficient analysis for yield and quality traits in betelvine (Piper betle L.) genotypes under three different sets of conditions

2019 ◽  
Vol 79 (02) ◽  
Author(s):  
Alice Tirkey ◽  
Vibha Ramtake ◽  
S. S. Porte ◽  
P. K. Joshi ◽  
N. Khare ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Leaf Area ◽  
Leaf Length ◽  
Potassium Content ◽  
Leaf Width ◽  
Piper Betle ◽  
Path Coefficient ◽  
High Potassium ◽  
Leaf Yield ◽  
High Potassium Content

Betelvine (Piper betle L.) is commonly consumed as betel quid or paan with areca nut and/or tobacco; and also utilized in Indian medicine systems and in religious ceremonies. The betel production is highly erratic and so is the income of farmers due to natural climatic factors and spoilage during transport. It is therefore important to improve its productivity per vine and per unit area to meet the demand. Correlation, path coefficient and stability analysis was carried out in fifteen genotypes of betelvine including 3 checks under three protected structures, namely, Bareja (E1), Poly tunnel (E2) and Net tunnel (E3). Among the three structures, Net tunnel was found suitable for the cultivation of betelvine in Chhattisgarh. With respect to quality parameters, Meetha paan (2.65 g/100g) followed by Billori (2.23 g/100g) found to have high protein content. Meetha paan (5.89g/100g) followed by Meetha-cum-bangla (5.36g/100g) was also found to possess high starch content. However, low fiber content was recorded in Meetha pan (1.83g/100g), whereas high potassium content was found in Ramtake meetha (933mg/100g) followed by Bidhan pan (991mg/100g). The genotype, Karapaku possessed high potassium content (2.67mg/g). Hedonic five point scale for organolaptic test showed Meetha paan (2.3/5) followed by Bali paan (2.4/5) were less pungent among genotype studied. Highest shelf life was found in genotype Karapaku and Bhaichigudi (18days). The results indicated that number of leaves per vein were positively correlated with leaf width (0.802 and 0.819) followed by leaf area (0.790 and 0.808), leaf area index (0.782 and 0.800), leaf length (0.745 and 0.759), specific leaf weight (0.681 and 0.709), petiole length (0.658 and 0.705), diameter of internodes (0.484 and 0.559) and R-value (0.112 and 0.110) at both phenotypic and genotypic level, respectively. Path analysis identified leaf width (0.8772) and leaf length (0.4712) had direct effects on leaf yield at phenotypic level. Highest positive direct effect on leaf yield was exerted by leaf area (1.3544) followed by leaf width (0.8986) at genotypic level. These characters can be used as selection criterion in a breeding programme to develop varieties of betelvine with high leaf yield. The stability analysis under three different protected structures viz; E1, E2, E3 indicated that the genotypes, Karapaku, Bhaichigudi and Maghai pan are stable across the environment for leaf yield.

scholarly journals Non-Destructive Model to Predict Commelina diffusa Leaf Area

2018 ◽  
Vol 35 (0) ◽  
Author(s):  
L.B. CARVALHO ◽  
E.A. ALVES ◽  
S. BIANCO
Keyword(s):  
Linear Equation ◽  
Leaf Area ◽  
Leaf Length ◽  
Leaf Width ◽  
Perennial Crops ◽  
Simple Linear Equation ◽  
Non Destructive

ABSTRACT: Leaf length (L), leaf width (W), and leaf area (LA) were measured from 100 leaves aiming to determine a simple linear equation (Y=a*X) to predict the leaf area of Commelina diffusa, an important weed infesting annual and perennial crops in Brazil and worldwide. Results indicate the equation LA=0.7*LW reliably estimates the leaf area of C. diffusa, after correlating LA with LW, and then validating that equation by analyzing four new 25-leaf samples.

scholarly journals Growth and Flowering Responses of Cut Chrysanthemum Grown under Restricted Root Volume to Irrigation Frequency

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Viyachai Taweesak ◽  
Thohirah Lee Abdullah ◽  
Siti Aishah Hassan ◽  
Nitty Hirawaty Kamarulzaman ◽  
Wan Abdullah Wan Yusoff
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Drip Irrigation ◽  
Phosphorus Content ◽  
Chrysanthemum Morifolium ◽  
Leaf Length ◽  
Leaf Width ◽  
Irrigation Frequency ◽  
Total Leaf Area ◽  
Root Volume

Influences of irrigation frequency on the growth and flowering of chrysanthemum grown under restricted root volume were tested. Chrysanthemum cuttings (Chrysanthemum morifolium“Reagan White”) were grown in seedling tray which contained coconut peat in volumes of 73 and 140 cm3. Plants were irrigated with drip irrigation at irrigation frequencies of 4 (266 mL), 6 (400 mL), and 8 (533 mL) times/day to observe their growth and flowering performances. There was interaction between irrigation frequency and substrate volume on plant height of chrysanthemum. Plants grown in 140 cm3substrates and irrigated 6 times/day produced the tallest plant of 109.25 cm. Plants irrigated 6 and 8 times/day had significantly higher level of phosphorus content in their leaves than those plants irrigated 4 times/day. The total leaf area, number of internodes, leaf length, and leaf width of chrysanthemums grown in 140 cm3substrate were significantly higher than those grown in 73 cm3substrate. The numbers of flowers were affected by both irrigation frequencies and substrate volumes. Chrysanthemums irrigated 8 times/day had an average of 19.56 flowers while those irrigated 4 times/day had an average of 16.63 flowers. Increasing irrigation frequency can improve the growth and flowering of chrysanthemums in small substrate volumes.

scholarly journals Effects of Potassium Deficiency on Growth of Pakchoi in Cold and Dry Areas

2021 ◽  
Author(s):  
Shi-Heng LI ◽  
Wei-Ming LI ◽  
Ling-Hao BU
Keyword(s):  
Leaf Area ◽  
Root Length ◽  
Growth And Development ◽  
Leaf Length ◽  
Potassium Deficiency ◽  
Leaf Width ◽  
Growth Status ◽  
Dry Areas ◽  
Number Of Leaves

Abstract [Background] To reveal the effect of potassium deficiency on the growth and development of pakchoi in cold and dry areas.[Results] The effect of potassium deficiency on the growth status of P. pakchoi in cold and dry areas was significant. P. pakchoi treated with potassium-free nutrient solution had the best growth, the largest number of leaves, leaf length, leaf width, leaf area, root length and weight; P. pakchoi treated with 100% potassium deficiency had the smallest plant, leaf length, leaf width, leaf area, root length and weight; P. pakchoi treated with potassium deficiency 50% had the middle growth and development status, and the root ratio was the smallest in d 21.[Conclusion] Potassium can effectively promote the growth and development of pakchoi in cold and dry areas, increase its root length, leaf width, leaf area, weight, etc. The quality of the upper part and the underground part of d,21 of pakchoi treated with deficiency is the most different.

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