scholarly journals Respon pertumbuhan vegetatif padi varietas IPB 4S pada kondisi cekaman kekeringan

Agromix ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 218-226
Author(s):  
Nasrudin Nasrudin ◽  
Efrin Firmansyah
Keyword(s):  
Drought Stress ◽  
Leaf Area ◽  
Root Length ◽  
Growth Parameters ◽  
Field Capacity ◽  
Dry Weight ◽  
Leaf Color ◽  
Rice Varieties ◽  
Root Dry Weight ◽  
Randomized Design

Drought stress affected growth and decreases rice yield. The use of high yielding varieties and drought tolerance is a strategic step that can be applied during drought stress. The aim of this research was to examine the response of the growth of IPB 4S rice varieties on planting media with drought stress during vegetative phase. The research used a nonfactorial Completely Randomized Design with six levels: field capacity, 10% of field capacity, 20% of field capacity, 30% of field capacity, 40% of field capacity, and 50% of field capacity. The treatments were repeated three times. The growth parameters were plant high, number of tiller, leaf color, leaf area, root length, root dry weight, canopy dry weight, and biomass. The results showed that the drought stress significantly different to leaf area, root length, canopy dry weight, and biomass but were not significantly different to plant height, number of tiller, leaf color, dan root dry weight. Increased of drought stress 30 to 50% of field capacity decreased of leaf area, canopy dry weight, and biomass, but increased root length.

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 Mitigation of salt stress in rice plant at germination stage by using methyl jasmonate

2016 ◽  
Vol 2 (1) ◽  
pp. 74-81 ◽  
Author(s):  
Sakil Mahmud ◽  
Shayla Sharmin ◽  
Bishan Lal Das Chowdhury ◽  
Mohammad Anowar Hossain ◽  
Muhammad Javidul Haque Bhuiyan
Keyword(s):  
Salt Stress ◽  
Methyl Jasmonate ◽  
Root Length ◽  
Growth Parameters ◽  
Dry Weight ◽  
Germination Percentage ◽  
Alpha Amylase ◽  
Rice Varieties ◽  
Biochemical Component ◽  
Germination Stage

To explore the possibility of using methyl jasmonate (MeJA) for alleviation of salt stress, the present study was conducted where six rice varieties (BRRI dhan31, BRRI dhan46, Gota, Kajalsail, Pokkali and Pengek) were grown in non saline (0 dSm-1), saline (12 dSm-1), saline (12 dSm-1) + 10 ?M MeJA and saline (12 dSm-1) + 20 ?M MeJA conditions at germination stage (till the 9 days). MeJA was applied by imbibing seeds in it for 24 hours. To evaluate the effect of MeJA on saline stressed plant at germination stage, change in growth parameters namely germination percentage, shoot and root length, fresh and dry wt. of shoot, fresh and dry wt. of root and biochemical component- activity of alpha-amylase were monitored. Salinity had a minimum effect on final germination percentage (FGP) of rice varieties, but delayed in attaining it. MeJA had least positive effect. Salinity significantly reduced the shoot and root length, fresh and dry weight of all the varieties. MeJA had more decreasing effect in susceptible varieties while increasing effect in moderately tolerant and tolerant. Activity of alpha-amylase in germinated seed varied from 0.051 mg to 0.111 mg mal./mg tissue. At 12dSm-1 salinity, susceptible and moderately tolerant varieties showed significant reduction but tolerant showed significant increase. MeJA intensified the negative effect further in susceptible varieties. In tolerant and moderately tolerant varieties, increment in activity took place and 10 ?M had a better effect over 20 ?M MeJA.Asian J. Med. Biol. Res. March 2016, 2(1): 74-81

Impact of Exogenous Applications of Salicylic Acid on the Tolerance to Drought Stress in Pepper (Capsicum Annuum L.) Plants

2020 ◽  
Author(s):  
zahra khazaei ◽  
Asghar Estaji
Keyword(s):  
Electrical Conductivity ◽  
Salicylic Acid ◽  
Drought Stress ◽  
Field Capacity ◽  
Dry Weight ◽  
Sweet Pepper ◽  
Total Phenolic ◽  
Pepper Plant ◽  
Randomized Design ◽  
Relative Water

Abstract Background: Drought is also one of the most widespread abiotic stresses that adversely effects the growth and development of plants. To investigate the effect of salicylic acid and drought stress on several physiological and chemical reactions in sweet pepper plants, the experiment was achieved as a factorial based on a completely randomized design in greenhouse. Drought stress levels were non-stress conditions (irrigation with field capacity), moderate stress (30% field capacity irrigation) and intense water stress (60% field capacity irrigation) and three concentrations of salicylic acid included 0 (as control), 0.5 and 1 mM were sprayed on the plant in three to four leaf stages. Results: The results showed that drought decreased fresh and dry weight of shoots and roots, leaf relative water content (RWC), fruit diameter and length, the index including chlorophyll and leaf area and increased electrical conductivity (EC), antioxidant activity, total phenolic content, ascorbate, polyphenol oxidase (PPO) and ascorbate peroxidase (APX) activity. After application of foliar salicylic acid, all of the above parameters, except the electrical conductivity content, increased. Conclusions: From the results of this experiment it is concluded that salicylic acid provides a better tolerance for drought stress in pepper plant through its influence on vegetative, biochemical and physiological characteristics.

scholarly journals Growth Enhancement of Phragmites australis, Eichhornia crassipes and Saccharum officinarum for Rhizoremediation of Crude Oil

2018 ◽  
Vol 7 (1) ◽  
pp. 60-84
Author(s):  
Monday Ubogu ◽  
Lucky O. Odokuma ◽  
Ejiro Akponah
Keyword(s):  
Crude Oil ◽  
Leaf Area ◽  
Root Length ◽  
Growth Parameters ◽  
Control Plant ◽  
Dry Weight ◽  
Saccharum Officinarum ◽  
Germination Percentage ◽  
Growth Enhancement ◽  
Plant Soil

P. australis, E. crassipes (in mangrove swamp) and S. officinarum (in rainforest) are capable of tolerating some levels of crude oil in soil. However, some important growth characteristics such speedy growths, extensive root system and increased biomass desirable for efficient rhizoremediation are depressed. To cushion this suppressive effects, plants were subjected to the following treatments: Plant + Soil (PS) (Control); Plant + Soil + Oil (PSO); Plant + Soil + Oil + Fertilizer (PSOF); Plant +Soil + Oil + Fertilizer + Microorganisms (PSOFM); and Plant + Soil + Fertilizer + Microorganisms + Solarization (PSOFMS). Treatments were monitored for 120 days to determine their effects on the following growth parameters: Germination, germination percentage, height, and root length, dry weight, and leaf area. Results indicated that treatments PSOF, PSOFM and PSOFMS enhanced all growth parameters over contaminated untreated soil (PSO) with the exception of germination in P. australis and S. officinarum; while root length, leaf area in E. crassipes were statistically the same for PS, PSO, PSOFM and PSOFMS (P ˂ 0.05). Overall, growth enhancement efficiencies of the applied treatments were in the order: PSOFM ˃ PSOF ˃ PSOFMS. Thus, growth of these plants can be enhanced in crude oil contaminated soil by the above treatments for efficient rhizoremediation.

scholarly journals Evaluation of growth and yield of selected hybrid and inbred rice varieties grown in net-house during transplanted aman season

1970 ◽  
Vol 34 (1) ◽  
pp. 67-73
Author(s):  
M SH Islam ◽  
MSU Bhuiya ◽  
AR Gomosta ◽  
AR Sarkar ◽  
MM Hussain
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Dry Matter ◽  
Dry Weight ◽  
Growth And Yield ◽  
Rooting Depth ◽  
Rice Varieties ◽  
Root Dry Weight ◽  
Matter Production ◽  
1000 Grain Weight

Pot experiments were conducted during T. aman 2001 and 2002 (wet season) at Bangladesh Rice Research Institute (BRRI) in net house. Hybrid variety Sonarbangla-1 and inbred modern variety BRRI dhan-31 were used in both the seasons and BRRI hybrid dhan-l was used in 2002. The main objective of the experiments was to compare the growth and yield behaviour of hybrid and inbred rice varieties under controlled condition. In 2001, BRRI dhan-3l had about 10-15% higher plant height, very similar tillers/plant, 15-25% higher leaf area at all days after transplanting (DAT) compared to Sonarbangla-1. Sonarbangla- 1 had about 40% higher dry matter production at 25 DAT but had very similar dry matter production at 50 and 75 DAT, 4-11% higher rooting depth at all DATs, about 22% higher root dry weight at 25 DAT, but 5-10% lower root dry weight at 50 and 75 DAT compared to BRRI dhan-31. The photosynthetic rate was higher (20 μ mol m-2/sec-1) in BRRI dhan-3l at 35 DAT (maximum tillering stage) but at 65 DAT, Sonarbangla-l had higher photosynthetic rate of 19.5 μ mol m-2 sec-1. BRRI dhan-3l had higher panicles/plant than Sonarbangla-1, but Sonarbangla-1 had higher number of grains/panicle, 1000-grain weight and grain yield than BRRI dhan-31. In 2002, BRRI dhan-31 had the highest plant height at 25 DAT, but at 75 DAT, BRRI hybrid dhan-l had the highest plant height. Sonarbangla-1 had the largest leaf area at 25 and 50 DAT followed by BRRI dhan-31, but at 75 DAT, BRRI dhan-31 had the largest leaf area. The highest shoot dry matter was observed in BRRI dhan-31 followed by Sonarbangla-1 at all DATs. Sonarbangla-1 had the highest rooting depth and root dry weight at all DATs. BRRI dhan-31 gave the highest number of panicles/plant followed by Sonarbangla-I, BRRI hybrid dhan-l had the highest grains/panicle followed by BRRI dhan-31 and Sonarbangla-I had the highest 1000-grain weight followed by BRRI dhan-31. The highest amount of grains/plant (34.6 g) was obtained from BRRI dhan-31. Key Words: Shoot dry matter; root dry weight; leaf area; photosynthesis; grain yield. DOI: 10.3329/bjar.v34i1.5755Bangladesh J. Agril. Res. 34(1) : 67-73, March 2009

scholarly journals Growth response of black velvet tamarind (Dialium guineense Willd) seedling to different potting media

2011 ◽  
Vol 3 (2) ◽  
pp. 166-170 ◽  
Author(s):  
A. U. Osaigbovo ◽  
C. N. C. Nwaoguala
Keyword(s):  
Growth Parameters ◽  
Poultry Manure ◽  
Dry Weight ◽  
River Sand ◽  
Monthly Basis ◽  
Root Dry Weight ◽  
Shoot Dry Weight ◽  
Randomized Design ◽  
Top Soil ◽  
Potting Media

The response in growth and development of seedlings of Dialium guineense to different potting media was studied in the screen house. Five potting media: River sand (Rs), Top soil (Ts), Poultry manure (Pm), Rice husk (Rh) and Oil palm refuse bunch (OPRB) were used. They were evaluated as sole treatments and in combination with river sand (Rs) in different ratios (1:1, 1:2, 2:5 and 5:2) respectively. Altogether, twenty one (21) potting media types were evaluated. The experiment was laid out in a completely randomized design (CRD) in three replications. Data were collected on monthly basis for plant growth parameters, while shoot and root dry weight were measured at the end of the experiment. On the average the seedlings of D. guineense responded best on the Rs + Ts 1:2 growth medium in number of leaves (16.67), stem girth (0.31 cm), number of nodes (11.67), shoot dry weight (1.24 g) and root dry weight (0.50 g). Rs + Ts 1:2 was followed by Rs + Pm 1:1 and Ts sole respectively with respect to the growth parameters evaluated and were not significantly (p 0.05) from one another, but were significantly (p < 0.05) different from other media and their combinations with river sand.

Pengaruh Berbagai Konsentrasi Atonik Terhadap Pertumbuhan Stek Panili (Vanilla plani

Agrotek ◽  
2018 ◽  
Vol 2 (4) ◽  
Author(s):  
Amelia S. Sarungallo ◽  
Bagyono Bagyono ◽  
Bagyono Bagyono ◽  
Aris Patiung ◽  
Aris Patiung
Keyword(s):  
Root Length ◽  
Dry Weight ◽  
Germination Percentage ◽  
Single Node ◽  
Growing Media ◽  
Root Dry Weight ◽  
Randomized Design ◽  
Two Factors ◽  
Media Types ◽  
Completely Randomized Design

This research was aimed to identify the influence of Atonic cencentration to the growth of single-node Vanilla cutting planted at various growing media types. Completely randomized design was used in this research with two factors namely Atonic concentration (500 ppm, 1000 ppm, 1500 ppm, 2000 ppm, dan 2500 ppm) and growing media types (tanah, pasir, tanah + pupuk kandang, tanah + pasir, tanah + pasir + pupuk kandang). The result showed that there were no interaction between Atonic concentration and growing media types to the growth of single-node vanilla cutting. Furthermore, the application of Atonic concentration at 2000 ppm established the best result of root length (12,32 cm) and root dry weight (0,16); while the best result of germination percentage (92,23%) revealed by Atonic concentration of 1500 ppm. Regression analysis of germination percentage showed that the optimal concentration of Atonic was 1842 ppm with R<sup>2</sup> = 60,3%. Mixed media of soil + sand + dung performed the best result in root length, root dry weight and germination percentage.

scholarly journals Production of Brachiaria decumbens Grass at Various Levels of Drought Stress Treatment

2018 ◽  
Vol 5 (3) ◽  
Author(s):  
A F A Putra ◽  
N D Hanafi ◽  
Hamdan ◽  
M Tafsin ◽  
R E Mirwandhono
Keyword(s):  
Drought Stress ◽  
Plant Height ◽  
Field Capacity ◽  
Dry Weight ◽  
Water Volume ◽  
Fresh Weight ◽  
Brachiaria Decumbens ◽  
Stress Treatment ◽  
Randomized Design ◽  
Completely Randomized Design

This study aims to determine effects of production of Brachiaria decumbens grass on different drought stress treatments. Research was conducted at the Greenhouse Faculty of Agriculture University of North Sumatera from Desember 2016 until April 2017. The design used was Completely Randomized Design (CRD), with three treatments and seven replications. The treatment consisted of three levels of drought stress which were control (100% field capacity=fc), medium drought stress (25% fc), and heavy drought stress (50% fc). The variable were fresh weight production, dry weight production and plant height. The results showed that drought stress treatment control (100% fc) significantly (P<0,05) affect fresh weight production, dry weight production, but not plant height. It is concluded that increasing water volume of field capacity increase production Brachiaria decumbens grass.

scholarly journals Marigold Growth in Six-packs following Transplanting from Plugs at Several Stages of Development

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 632f-633
Author(s):  
Kay Oakley ◽  
Robert Geneve ◽  
Sharon Kester ◽  
Myra Stafford
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Root Length ◽  
Dry Weight ◽  
Separate Experiment ◽  
Total Root Length ◽  
Root Dry Weight ◽  
Shoot Dry Weight ◽  
Significant Difference ◽  
Root Restriction

Root and shoot development in Marigold `Little Devil Flame' was studied after being grown for varying lengths of time in 392-count plugs before transplanting to six-pack cells. Seedlings were grown for 0, 5, 10, 15, 20, and 25 days before transplanting to six-packs. All plants were measured at day 25. There was no significant difference in total root length, area and dry weight per plant or in leaf area and shoot dry weight per plant for seedlings transplanted from 0 to 15 days. Both total root dry weight and total shoot dry weight of seedlings transplanted on day 20 was reduced by 32% compared to seedlings that were not transplanted. Total root dry weight of seedlings transplanted at day 25 was reduced by 60% while total shoot dry weight of seedlings was reduced by 56% from those not transplanted. In a separate experiment, the growth rate of seedlings grown in plugs was sigmoidal (r2 = 0.98). Growth rate was significantly reduced between 20 and 25 days in the plug. These results suggest that root restriction in the plug may be a factor in the reduction of seedling growth following transplanting.

Response of growth and nitrogen fixation to pod elimination of three annual Medicago species submitted to drought and subsequent recovery

2016 ◽  
Vol 96 (5) ◽  
pp. 757-764 ◽  
Author(s):  
Hossein Sadeghi ◽  
Farzaneh Fakhari
Keyword(s):  
Nitrogen Fixation ◽  
Drought Stress ◽  
Growth Parameters ◽  
Field Capacity ◽  
Physiological Basis ◽  
Subsequent Recovery ◽  
Randomized Design ◽  
Four Levels ◽  
Annual Medicago ◽  
Medicago Species

This research examined the effect of pod elimination on growth and N2 fixation ability in three annual Medicago species during drought stress and subsequent recovery. This study was carried out as a factorial experiment based on a completely randomized design with four replications. The treatments included annual Medicago species, presence or removal of the pod, and water stress at four levels: 100% (as a control), 80%, 60%, and 40% field capacity (FC) during the period of stress. The results showed that annual Medicago species can be considered as semi-drought tolerant species and their recovery ability from mild and moderate drought stress is relatively good. M. polymorpha performed better and showed higher recovery ability in comparison with other tested species. The results of this study showed that elimination of pods from annual Medicago species before sowing enhanced seedling performance under drought stress. However, the effect of pod elimination showed higher significance on growth parameters than nitrogen fixation. The information from this research would be useful for better understanding the physiological basis of changes in drought resistance, as well as targeted breeding programs, to improve the performance of annual Medicago species under conditions of limited or scarce water supply.

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