scholarly journals Effect of Prior Heat Stress on the Early Growth of Carica papaya

2013 ◽  
Vol 5 (4) ◽  
pp. 508-512
Author(s):  
Gideon Olarewaju OKUNLOLA ◽  
Adekunle Ajayi ADELUSI
Keyword(s):  
Heat Stress ◽  
Leaf Area ◽  
Carica Papaya ◽  
Growth Parameters ◽  
Dry Weight ◽  
Experimental Period ◽  
Leaf Length ◽  
Fresh Weight ◽  
Shoot Height ◽  
Chlorophylls A And B

The experiment was carried out to determine the effects of heat stress on some growth parameters like shoot height, leaf area, fresh weight, dry weight as well as the accumulation of chlorophylls in Carica papaya. Seedlings of C. papaya were exposed to prior heat stress at 40 °C. A group of plants was placed in a Gallenkamp oven for four hours; another group of plants was placed in the oven for eight hours while the third group of plants was placed in a dark cupboard for the period of eight hours. Sampling was carried out at weekly intervals starting from seven days after treatment. Plants were randomly picked from each of the three treatments. Three replicates were used for each parameter. The results obtained from the study showed that there was an increment in the shoot height, leaf area, fresh weight and dry weight from the beginning to the end of the experimental period. However, the accumulation of chlorophylls did not follow a particular pattern. The analysis of variance carried out on the data obtained showed that heat stress had a significant effect on the petiole length, shoot height, leaf length, leaf width, leaf area, fresh weight and dry weight. Heat stress, however, did not produce a significant effect on the accumulation of chlorophylls a and b and total chlorophyll.

scholarly journals PEMANFAATAN PUPUK ORGANIK CAIR PAITAN (Tithonia diversifolia) PADA BERBAGAI DOSIS DAN RAGAM APLIKASINYA TERHADAP PERTUMBUHAN KAILAN (Brassica oleracea Var. Acephala)

2020 ◽  
Vol 11 (1) ◽  
pp. 25
Author(s):  
AHMAD TAOFIK ◽  
SOFIYA HASANI ◽  
AYU CAHYANINGTYAS ◽  
BUDY FRASETYA
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Analysis Of Variance ◽  
Growth Parameters ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Fresh Weight ◽  
Application Method ◽  
Randomized Design ◽  
Two Factors

The paitan plant contains allelopathic compounds for other plants so that the utilize of paitan plant as a source of liquid organic fertilizer (LOF) has not been widely applied. This research aimed to study the interaction between LOF dosage and appropriate application method of LOF to increase the growth of kailan plants. The research conducted at experimental garden of UIN Bandung from June-August 2016. The experimental design was a completely randomized design with two factors and replicated four times. The first factor was application methods (A), i.e. a1=direct application to the soil, and a2= spraying. The second factor was LOF dosage (T), i.e. t0: 0 ml plant-1, t1: 20 ml plant-1, t2: 40 ml plant-1, t3: 60 ml plant-1, t4: 80 ml plant-1. The growth parameters observed i.e. plant height (14, 21, 28, 35 and 42 Day after Transplanting (DAT)), leaf area 42 DAT, plant dry weight 42 DAT, and plant fresh weight 42 DAT. The data then analyzed with analysis of variance at a significant level of 5%. If the analysis of variance was significant, the Duncan multiple range test was used at α=5%. The research results showed there was no interaction between method of application with a various dosage of paitan LOF to all of the growth parameters. The application paitan LOF showed similar growth in terms of plant height, leaf area, plant dry, and plant fresh weight. The application method of paitan LOF direct to the soil or spraying to leaves can not increase kailan plant growth.

scholarly journals (389) Enhanced Growth in Acclimatization of In Vitro Plantlets of Wasabi japonica using Hydroponics

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1032D-1032
Author(s):  
Joo Hyun Lee ◽  
Yong-Beom Lee ◽  
Kyu Sook Lee
Keyword(s):  
Leaf Area ◽  
Light Availability ◽  
Dry Weight ◽  
Leaf Length ◽  
Superior Performance ◽  
Fresh Weight ◽  
Ps Ii ◽  
Hydroponic System ◽  
Murashige Skoog

Wasabi japonica plantlets were acclimatized in a hydroponic system to determine effective procedures. The plantlets were cultured on solid Murashige-Skoog medium with 3% sucrose. Shoots that formed roots were transplanted into hydroponic systems: 1) acclimatization in ebb-and-flow (EBB) for subirrigation (medium: granulated rockwool and coir); and 2) acclimatization in deep flow technique (DFT). The plantlets were acclimatized for 5 weeks under two irradiance treatments, 50 and 300 mmol·m-2·s-1. Photosynthetic capacity in high PPF was higher than that in low PPF during acclimatization. Electron transport rate from PS II (ETR) and biomass production increased significantly with increased light availability. The fresh weight, dry weight, and leaf area of plantlets in high PPF were higher than those in low PPF. In particular, the dry weight and ETR of the plantlets grown in high PPF increased more than twice as much as those in low PPF. At 50 mmol·m-2·s-1 PPF, growth indexes, such as number of leaves, leaf length, leaf width, leaf area, fresh weight, and dry weight, were higher in EBB (granulated rockwool) > EBB (coir culture) > DFT. At 300 mmol·m-2·s-1 PPF, those indexes were higher in DFT > EBB (granulated rockwool) > EBB (coir). The Wasabi japonica plantlets acclimatized in a hydroponic system also had a superior performance when they were transferred to the field.

scholarly journals Pengaruh Ekstrak Yeast dan Pisang Raja Terhadap Pertumbuhan Tunas Embrio Vanda hookeriana Rchb.f.

2021 ◽  
Vol 14 (1) ◽  
pp. 138-151
Author(s):  
Shilfiana Rahayu ◽  
Edy Setiti Wida Utami ◽  
Aldy Bahaduri Indraloka
Keyword(s):  
Yeast Extract ◽  
Growth And Development ◽  
Culture Media ◽  
Growth Parameters ◽  
Dry Weight ◽  
Leaf Length ◽  
Shoot Height ◽  
Culture Techniques ◽  
Organic Components

AbstrakVanda hookeriana Rchb.f. merupakan anggrek yang dilindungi dan keberlangsungan hidupnya di alam terancam punah, sehingga perbanyakan anggrek secara in vitro sangat diperlukan. Penelitian ini bertujuan untuk mengetahui pengaruh ekstrak yeast dan pisang raja terhadap pertumbuhan tunas embrio anggrek V. hookeriana Rchb.f. Desain penelitian ini menggunakan RAL faktorial, faktor pertama adalah ekstrak yeast dengan 3 taraf: 0,5 g/L, 1 g/L, dan 1,5 g/L, faktor kedua adalah buah pisang raja dengan 3 taraf: 50 g/L, 100 g/L, dan 150 g/L. Penelitian dilakukan menggunakan teknik kultur jaringan, pengamatan dilakukan setiap bulan sekali dengan mengamati aspek morfologi plantlet. Media yang digunakan adalah Vacin-Went (VW) + kombinasi ekstrak yeast dan pisang raja. Parameter pengamatan berupa tinggi tunas, berat kering tunas, jumlah daun, diameter daun, panjang daun, berat kering daun, jumlah akar, diameter akar, panjang akar, berat kering akar, dan morfologi tunas. Hasil analisis menunjukkan bahwa perlakuan pisang raja 150 g/L + ekstrak yeast 0,5 g/L merupakan konsentrasi yang paling berperan terhadap parameter pertumbuhan anggrek V. hookeriana Rchb.f. Penelitian ini berhasil membuktikan bahwa penambahan komponen organik dalam media kultur jaringan memberikan respon pertumbuhan dan perkembangan yang baik pada eksplan. Komponen organik membantu proses fisiologis eksplan, karena komponen organik mengandung senyawa potensial yang dibutuhkan selama proses pertumbuhan dan perkembangan. Abstract Vanda hookeriana Rchb.f. is one of protected orchid and its survival in the wild was threatened by extinction, so orchid propagation was needed. This research aimed to determine the effect of yeast and pisang raja extracts to embryonal shoot growth of Vanda hookeriana Rchb.f. Experimental design used factorial RAL, first factor was yeast extract with 3 treatments (0.5 g/L; 1 g/L; & 1.5 g/L). Second factor was pisang raja with 3 treatments (50 g/L; 100 g/L; & 150 g/L). The research was conducted using in vitro culture techniques, observations were made once a month by observing the plantlet morphological parameters. The medium used was Vacin-Went (VW) + combination of yeast and pisang raja extracts. Observation parameters were shoot height, shoot dry weight, leaf number, leaf diameter, leaf length, leaf dry weight, number of roots, root diameter, root length, root dry weight and shoot morphology. The analysis showed that pisang raja treatment 150 g/L + yeast extract 0.5 g/L was the best concentration for the growth parameters of Vanda hookeriana Rchbf. This research were succeeded in proving that the addition of organic components in tissue culture media gave better response to growth and development of the explants. Organic components helps the explants in physiological ways because of  the organic components contain potential compounds needed during the growth and development process.

scholarly journals Growth parameters of acid lime (Citrus aurantifolia Swingle) cv. Kuliana lime

2019 ◽  
Vol 38 (4) ◽  
Author(s):  
Subhrajyoti Mishra ◽  
Dilip Kumar Dash
Keyword(s):  
Leaf Area ◽  
Rainy Season ◽  
Growth Parameters ◽  
Leaf Growth ◽  
Dry Weight ◽  
Research Station ◽  
Spring Season ◽  
Fresh Weight ◽  
Acid Lime ◽  
Leaf Parameters

An experiment was carried out to identify the effect of season on various leaf parameters of Kuliana lime during 2016-17 at Horticultural Research Station, Department of Fruit Science and Horticulture Technology, O.U.A.T., Bhubaneswar. The rainy season recorded the maximum leaf fresh weight (0.39 g), leaf dry weight (0.18 g), leaf area (16.19 cm2) whereas spring season have greater production of chlorophyll-a (1.19 mg per g of FW), chlorophyll-b (0.61 mg per g of FW) and total chlorophyll (1.81 mg per g of FW). Rainy season flush showed the maximum leaf area, leaf fresh weight and dry weight, due to the better availability of soil moisture and high relative humidity of atmosphere resulting in low transpiration losses which perhaps favoured the better leaf growth. Though spring season have the most favourable climatic condition but carbohydrate in spring flush leaves were might utilized mainly to support reproductive growth hence there was reduction in the dry weight of leaves.

scholarly journals Influence of Phosphorus forms on Growth and Yield of Cowpea, Kales and Amaranth Vegetable Species

2019 ◽  
pp. 1-9
Author(s):  
Fidelis W. Githua ◽  
Winnie Ntinyari ◽  
Nicholas K. Korir ◽  
Joseph P. Gweyi-Onyango
Keyword(s):  
Leaf Area ◽  
Phosphate Rock ◽  
Rock Phosphate ◽  
Growth Parameters ◽  
Dry Weight ◽  
Leafy Vegetables ◽  
Growth And Yield ◽  
Fresh Weight ◽  
Shoot Fresh Weight ◽  
Root Dry Weight

Maximum production potential of leafy vegetable is limited by phosphorous (P) deficiency in the soils. This is due to the high cost of the phosphate fertilizer and the fixed form of the available phosphorous in the soil. There is therefore, need for farmers to use alternative and cheaper sources of P that are economic friendly to supply the required mineral nutrition to their crops. Rock phosphate is widely available but has a challenge in solubilization to make P available to the crops. In the current study, the aim was to evaluate the effect phosphate forms and acidulate rock phosphate on growth and yield of selected leafy vegetables. The experiment was laid out in Randomized Complete Block Design in split-plot arrangement, with three leafy vegetables (cowpeas, kales and amaranth) being the main plots, and various sources of P (Triple super phosphate (TSP)  Mijingu Phosphate Rock(MPR), Mijingu phosphate Rock + sulphur (MPR)PR+S and control) constituting the subplots with three replicates. The collected data included: root dry weight, leaf area, shoot fresh weight and leaf area and was subjected to SAS for ANOVA and where there were significant differences between means were further separated using the Fischer’s LSD at 5% level of significance. The results revealed that there were significant increase in the growth parameters of the vegetables as an effects of phosphorus application compared with the control. TSP elicited the best results in all the tested parameters in 5 WAP, 6 WAP and 7 WAP respectively in both seasons  The highest value of root dry weight (11.2 g), leaf area (1905.0 cm2), number of branches (40.67) shoot fresh weight (236.8 g) as influenced by TSP application in the vegetable species. The MRP + sulphur  also followed in superiority  of increasing the growth parameters which is an indication that sulphur can be used in solubilizing rock phosphate and making it a suit alternative for farmers. Thus, farmers are advised to directly apply rock phosphate and sulphur to soil as a possible alternative to the more expensive soluble phosphate fertilizers in tropical cropping system.

Relations Between Growth Parameters in Oil Palm Seedlings Grown in Polybags

1980 ◽  
Vol 16 (3) ◽  
pp. 275-278 ◽  
Author(s):  
E. O. Lucas
Keyword(s):  
Leaf Area ◽  
Oil Palm ◽  
Growth Parameters ◽  
Weight Ratio ◽  
Dry Weight ◽  
Seedling Height ◽  
Fresh Weight ◽  
Area Index ◽  
Non Destructive ◽  
Selection Of

SUMMARYThe relation between some growth parameters in polybag oil palm nursery seedlings were assessed. ‘Non-destructive’ parameters such as leaf number, seedling height and girth were highly and positively correlated with one another and with the dry weight of seedlings. Amongst the ‘destructive’ parameters only leaf area, height/weight ratio and fresh weight were positively correlated with dry weight. The Leaf Area Index was poorly correlated with other parameters examined. The relevance of these findings to the selection of oil palm seedlings for transplanting into the field is discussed.

scholarly journals Limitation on Growth and Yield of Phaseolus vulgaris L. Due to Telfairia Mosaic Virus

2021 ◽  
pp. 30-38
Author(s):  
A. A. J. Mofunanya ◽  
E. A. Effa ◽  
B. A. Ngele ◽  
F. A. Akomaye ◽  
A. O. Damian
Keyword(s):  
Mosaic Virus ◽  
Leaf Area ◽  
Growth Parameters ◽  
Block Design ◽  
Dry Weight ◽  
Growth And Yield ◽  
Shoot Height ◽  
Randomized Block Design ◽  
Net Assimilation ◽  
Number Of Seeds

Aims: To assess limitation on growth and yield of P. vulgaris due to Telfairia mosaic virus (TeMV). Study Design: The study was conducted in a randomized block design. Place and Duration: Department of Botany, University of Calabar, Calabar, Nigeria between April and August, 2016. Methodology: Seeds of P. vulgaris were obtained, sorted, planted in polyethylene bags, and on germination, inoculated with TeMV, growth and yield limitation assessed at 2, 4, 6, 8 and 12 weeks after inoculation. Results: Results showed that the virus decreased growth of P. vulgaris resulting in yield loses. Growth parameters were severely limited by TeMV with percentage reduction in Leaf area, shoot height, number of primary shoot, petiole length and number of leaves produced of 44.5%, 52.8%, 44.0%, 44.9% and 51.45 respectively at 10 weeks after inoculation (WAI). Leaf fresh weight (38.4%) and dry weight (32.3%) were significantly (P=0.05) reduced. Relative growth rate, net assimilation rate and leaf area ratio were negatively impacted by the virus with reductions of 26.5%, 36.7% at 4 WAI and 33.5% at 12 WAI respectively. Limitation on yield due to TeMV was significant (P=0.05) with reduction in pod length of 36.9%, number of pods per plant of 36.5%, number of seeds per pod of 26.5%, number of seeds per plant of 53.3% and weight of 100 seeds of 18.5%. Limitation induced on fresh and dry weight of shoot and root, pod width, seed length and seed width was not significant. Conclusion: The study confirmed the threat of TeMV necessitating control of the virus on this important legume.

scholarly journals Growth parameters and plant biomass of tomato evaluated under different concentrations of boric acid

2020 ◽  
Vol 2 (3) ◽  
pp. 113-118
Author(s):  
Ezekiel Dare Olowolaju ◽  
◽  
Akinjide Moses Afolabi ◽  
Abiodun Mutairu Adejumo ◽  
Kehinde Adesegun Momodu ◽  
...  
Keyword(s):  
Boric Acid ◽  
Leaf Area ◽  
Nutrient Solution ◽  
Plant Biomass ◽  
Growth Parameters ◽  
Dry Weight ◽  
Growth Indices ◽  
Shoot Height ◽  
Morphological Attributes ◽  
Number Of Leaves

The objective of this study was to investigate the growth parameters and plant biomass of tomato (Solanum lycopesicum) evaluated under different levels of boric acid, major source of boron. The treatments were; Normal nutrient solution (control, boric acid conc. = 0.000308 g l-1); nutrient solution in which the concentration of boric acid increased by the factor of 5 (boric acid x5, boric acid conc. = 0.00154 g l-1); and nutrient solution in which the concentration of boric acid was increased by the factor of 10 (boric acidx10, boric acid conc. = 0.00308 g l-1). Morphological attributes determined were shoot height, number of leaves, leaf area, shoot, leaf and root fresh and dry weight, and growth indices. Shoot height, number of leaves, leaf area, shoot, leaf and root fresh and dry weight, and growth indices in the seedlings treated with boric acid increased by factor of 10 (boric acid x10)were greater than other treatments. It can be concluded that nutrient solution of boric acid increased by a factor of ten improve the growth parameters and plant biomass of tomato.

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