scholarly journals Suitable Priming for Rice Yield Improvement

2019 ◽  
Vol 52 (1) ◽  
pp. 1-16
Author(s):  
I. Kareem ◽  
M.R. Ismail ◽  
A. Pueth
Keyword(s):  
Methyl Jasmonate ◽  
Magnesium Chloride ◽  
Seed Treatment ◽  
Rice Yield ◽  
Rice Variety ◽  
Growth And Yield ◽  
Yield Improvement ◽  
Self Sufficiency ◽  
Hormonal Priming ◽  
Sowing Seed

Abstract Low yield of rice has made reaching self-sufficiency level in Malaysia elusive. So, Malaysia has become a target of rice exporting countries within and outside Asia. To solve this problem, a pre-sowing seed treatment was used as a physiological intervention to alleviate the impeding problems of achieving better growth and yield of Malaysian rice variety MR219. A glass house experiment, which involved the use of solutions of osmotic salts and plant hormones, was used for this investigation. Data on germination percentages, height, number of tillers and productive tillers, tiller efficiency and yield were taken. In both osmopriming and hormonal priming treatments, the highest number of tillers and productive tillers were from pre-germination. The tallest plants from osmopriming were from 150mM treatment, while 50 ppm GA3 had the tallest in hormonal priming. The highest tiller efficiency for osmopriming was from 150mM and and 200mM sodium chloride, while in hormonal priming it was 200 ppm salicylic acid. For yield per panicle in osmopriming, it was 50mM and 100mM magnesium chloride that had the highest, while in hormonal priming it was 200 ppm methyl jasmonate. Finally, the highest grain yield per hill was produced by 200 ppm methyl jasmonate in hormonal priming, while 50Mm magnesium chloride had the highest yield in osmotic priming. So, it is concluded that the use of 200 ppm methyl jasmonate and 50Mm magnesium chloride could be used as potential hormonal priming and osmopriming, respectively, for yield improvement of MR219 rice in Malaysia.

scholarly journals CONSEQUENCES OF PRESOWING INFLUENCE OF LOW AND VARIABLE TEMPERATURES ON CARROT AND RADISH SEEDS

2019 ◽  
pp. 62-64
Author(s):  
S. R. Gasanov ◽  
S. A. Mammadova
Keyword(s):  
Low Temperatures ◽  
Raphanus Sativus ◽  
Seed Treatment ◽  
Growth And Yield ◽  
Average Weight ◽  
Vegetable Crops ◽  
Root Crops ◽  
Different Temperatures ◽  
Sowing Seed ◽  
The Impact

The study of the dynamics of plant growth and yield of vegetable crops (carrot variety Absheron winter (Daucus carota subsp. sativus (Hoffm.) Schьbl.) and radish variety Virovsky white (Raphanus sativus var.radicula Pers.)) was conducted in the field conditions after presowing exposure to different temperatures: I option – sowing of seeds exposed to low temperatures (for 15 days the swollen for 24 hours seeds were kept at a temperature of 0±1°С); Option II - sowing of seeds exposed to variable temperatures (for 5 days, the swollen for 24 hours seeds were exposed to variable temperatures of + 20°C (8 hours) and 0±1°C (16 hours) and then 10 days at a temperature of 0±1°C; K1 – sowing dry seeds; K2 – sowing soaked seeds. The impact on the seeds of low and variable temperatures caused an increase in growth processes, both in radish and carrot. Both studied crops showed a tendency to increase the yield to a greater extent when exposed to swollen seeds with variable temperatures. Thus, the average weight of radish crops exceeded the control variant by 47.1% and carrots by 27.6%. The yield of root crops per m2increased by 36.4% for radish and 30.0% for carrot. To increase the productivity of vegetable crops, we recommend using the studied methods of pre-sowing seed treatment in practice.

scholarly journals Seed Treatment With Jasmonic Acid and Methyl Jasmonate Induces Resistance to Insects but Reduces Plant Growth and Yield in Rice, Oryza sativa

2021 ◽  
Vol 12 ◽  
Author(s):  
Santhi Bhavanam ◽  
Michael Stout
Keyword(s):  
Plant Growth ◽  
Jasmonic Acid ◽  
Methyl Jasmonate ◽  
Pest Management ◽  
Seed Treatment ◽  
Seedling Emergence ◽  
Growth And Yield ◽  
Lissorhoptrus Oryzophilus ◽  
Rice Water Weevil ◽  
Rice Water

When applied exogenously to plants, jasmonates [i.e., jasmonic acid (JA) and methyl jasmonate (MeJA)] increase plant resistance against herbivores, and their use in pest management has been suggested. For integration into pest management programs, the benefits of the resistance induced by jasmonates must outweigh the costs of jasmonates on plant growth and yield. A previous field study in rice found that seed treatment with MeJA reduced densities of the rice water weevil, Lissorhoptrus oryzophilus, but also reduced plant growth. Yields from MeJA plots were similar to yields from control plots. Because this study was conducted under field conditions with natural levels of pest populations, it was unclear whether effects on growth and yield were due to direct effects of MeJA treatment on the plant or due to lower reductions in rice water weevil densities. Therefore, the present study was designed to characterize the effects of JA and MeJA seed treatment on rice plant growth and yield in a pest-free environment under greenhouse conditions. Seed treatment with 2.5 mM JA and 2.5 mM MeJA enhanced resistance in rice plants to rice water weevils when plants were exposed to weevils 30 days after planting. Seed treatment with MeJA reduced seedling emergence and plant height at 4 and 14 days after planting, respectively, compared to JA and control treatments. However, numbers of tillers per plant at 45 days after planting and days to heading were unaffected by jasmonate seed treatment. Of four yield components (panicles per plant, filled grains per panicle, percent unfilled grains, and filled grain mass) that were measured, only filled grain mass was reduced by seed treatment. Plants grown from MeJA-treated seeds showed 31% lower grain masses compared to plants grown from control-treated seeds. Thus, the effects of seed treatment with MeJA on plant growth were stronger immediately post-treatment and subsided over time, such that plant growth mostly recovered 6 weeks after treatment. At maturity, MeJA may reduce one but not all components of yield. Despite similar effects on rice water weevil resistance, the negative effects of JA seed treatment on plant growth and yield were smaller compared to MeJA seed treatment.

scholarly journals Influence of Chemicals, Botanicals and Growth Regulator Treatments on Plant Growth and Yield Attributing Traits of Lentil (Lens culinaris L.) Variety: K-75

2021 ◽  
pp. 124-129
Author(s):  
Avuta Saipriya Ramesh ◽  
Prashant Kumar Rai ◽  
Sasya Nagar
Keyword(s):  
Seed Treatment ◽  
Leaf Extract ◽  
Growth And Yield ◽  
Seed Treatments ◽  
Maximum Increase ◽  
Simple Method ◽  
Significant Difference ◽  
Percentage Yield ◽  
Field Emergence ◽  
Sowing Seed

The experiment was conducted in post graduate Seed Testing Laboratory and Field Department of Genetics and Plant Breeding, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj (U.P) during Rabi season 2020-2021, in order to standardize the suitable pre-sowing seed treatment for Lentil (K-75). Different pre-sowing seed treatments viz.,T0-Control (untreated), T1- KCL @1%, T2- KCL @ 3%, T3- KNO3 @ 1%, T4- KNO3 @ 3%, T5- Panchagavya @ 2%, T6 – GA3 @ 20ppm, T7 – Panchagavya @ 4%, T8 – GA3 @ 10ppm,T9 – Panchagavya @ 6%,T10 – Tulasi Leaf Extract @ 2%, T11 – Tulasi Leaf Extract @ 4%,T12 – Tulasi Leaf Extract @ 6% were evaluated by screening of 12 hour. It was found that all the pre-sowing seed treatments recorded the significant difference with that of control. In field condition highest field emergence percentage,yield and yielding attributes was found in T7 -Panchagavya @ 4%. Pre-sowing seed treatment with Panchagavya @ 4% followed by GA3 @ 10 ppm, Panchagavya @ 2%, KCL @ 1% significantly increased the germination and yielding attributes of Lentil. Pre-sowing seed treatments with Panchagavya (4%) and GA3 (10ppm) resulted in maximum increase in field emergence, vigour of Lentil seeds and found to be lowest in control seeds. Pre-sowing seed treatment that leads to a physiological condition that allows the seed to germinate more effectively and no costly equipment and chemical requirements could be used. Hence it is a simple method for overcoming weak germination and seedling establishment and helps to preserve agriculture and economical, non-toxic, eco-friendly sources.

scholarly journals Effect of Seed Treatment with Chemicals and Plant Growth Regulators on Growth and Yield Attributing Traits of Indian Mustard (Brassica juncea L.) Variety: Pusa Bold

2021 ◽  
pp. 170-176
Author(s):  
N. Syam Prasad ◽  
Prashant Kumar Rai ◽  
Abhinav Dayal
Keyword(s):  
Seed Treatment ◽  
Indian Mustard ◽  
Growth And Yield ◽  
Seed Treatments ◽  
Maximum Increase ◽  
Seed Vigour ◽  
Yield Attributes ◽  
Control Seed ◽  
Sowing Seed ◽  
Mustard Seeds

The Experiment was conducted in the field of Department of Genetics and Plant Breeding, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj (U.P.) during Rabi season 2020-2021, in order to standardize the suitable pre- sowing seed treatment for Mustard. Different pre- sowing seed treatments with control (Unhardened) were evaluated  viz., T0– Control,T1- Mg(No3)2 @ 0.1%,T2- Mg(No3)2 @ 0.3%,T3- Mg(No3)2 @ 0.5%,T4- Ca(No3)2 @ 0.1%,T5- KNO3 @ 0.5%,T6- Mg(So4)2 @ 0.1%,T7- Mg(So4)2 @ 0.3%,T8- Mg(So4)2 @ 0.5%,T9- GA3 @ 25ppm,T10- GA3 @ 50ppm,T11- GA3 @ 75ppm,T12- PEG6000 @ 25ppm. It was found that the all pre-sowing seed treatments showed significance difference with control. Seed treatment with KNO3 @ 0.5% found to be highest in field emergence and yield attributes of Mustard and it was followed by GA3 @ 25ppm and Mg(No3)2 @ 0.1%. Pre- sowing seed treatment with KNO3 @ 0.5% and GA3 @ 25 ppm showed maximum increase yield  of mustard seeds and found to be lowest in control seeds. Pre-sowing seed treatments of the mustard seeds in which KNO3 @ 0.5% gave best result to enhanced germinability, seed vigour, seed yield and yielding attributes. These conclusions are based on the results of six months investigation and therefore further investigation is needed to arrive at valid recommendations.

scholarly journals Pre-Sowing Seed Treatment Nanotechnology with Environment-Friendly Nanotube-Based Nanochips

2016 ◽  
Vol 58 ◽  
pp. 29-34
Author(s):  
Vladimir V. Karpachev ◽  
Jury J. Spiridonov ◽  
Nadezda L. Voropaeva ◽  
Alexey G. Tkachev ◽  
Nikolai V. Shachnev ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Seed Treatment ◽  
Field Tests ◽  
Growth And Yield ◽  
Treatment Technology ◽  
Environment Friendly ◽  
Yield Increase ◽  
Significant Yield ◽  
Sowing Seed ◽  
The Impact

This particular study deals with the impact of pre-sowing nanotube-based seed treatment technology on rapeseed (Brassica napus) growth and yield. During the field tests we identified a significant yield increase as a result of applying the pre-sowing nanotube-based seed treatment technology. The main treatment agents were physiologically active nanochips consisting of carrier matrix nanotubes with eliciting activity ("Taunit", "Taunit-M", "Taunit-MD", and graphene). Enriching nanochips with insecticide-fungicide Kruyzer for guaranteed seed protection from crucifer flea allowed to raise the yield up to 8.08 t / ha - 12.28 t / ha.

Improvement of separate elements of the techno-logy of cultivation of white cabbage in the conditions of the of the central region of the non-chernozem zone

2020 ◽  
Author(s):  
A.V. Konstantinovich ◽  
◽  
A.S. Kuracheva ◽  
E.D. Binkevich
Keyword(s):  
Seed Treatment ◽  
Unit Area ◽  
Growing Season ◽  
Agricultural Products ◽  
Stress Factors ◽  
High Quality ◽  
Temperature And Precipitation ◽  
White Cabbage ◽  
Sowing Seed

In conditions of climate change, when temperature and precipitation fluctuations occur more and more frequently during the growing season, it is necessary to obtain high quality seedlings with "immunity" to various stress factors, including high weediness, the damage from which is associated with a decrease in yield (by 25 -35%) and with a deterioration in the quality of agricultural products. Due to the imbalance in production technology, seedlings are often weakened, overgrown, with a low yield per unit area and survival rate in the field. One of the solutions to this problem is the use of PP for pre-sowing seed treatment to increase the competitiveness of seedlings in the field.

Influence of pre-sowing seed treatment on frost- and winter resistance of winter wheat after various predecessors

2018 ◽  
Vol 2 (1) ◽  
pp. 53-60
Author(s):  
A.V. Cherenkov ◽  
◽  
S.K. Gruzinov ◽  
I.O. Kobos ◽  
◽  
...  
Keyword(s):  
Winter Wheat ◽  
Seed Treatment ◽  
Sowing Seed

scholarly journals Thiourea and hydrogen peroxide priming improved K+ retention and source-sink relationship for mitigating salt stress in rice

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Manish Pandey ◽  
Radha Krishna Paladi ◽  
Ashish Kumar Srivastava ◽  
Penna Suprasanna
Keyword(s):  
Hydrogen Peroxide ◽  
Salt Stress ◽  
Rice Variety ◽  
Nacl Stress ◽  
Stress Conditions ◽  
Field Conditions ◽  
Growth And Yield ◽  
Yield Attributes ◽  
Redox Environment ◽  
Source Sink

AbstractPlant bioregulators (PBRs) represent low-cost chemicals for boosting plant defense, especially under stress conditions. In the present study, redox based PBRs such as thiourea (TU; a non-physiological thiol-based ROS scavenger) and hydrogen peroxide (H2O2; a prevalent biological ROS) were assessed for their ability to mitigate NaCl stress in rice variety IR 64. Despite their contrasting redox chemistry, TU or H2O2 supplementation under NaCl [NaCl + TU (NT) or NaCl + H2O2 (NH)] generated a reducing redox environment in planta, which improved the plant growth compared with those of NaCl alone treatment. This was concomitant with better K+ retention and upregulated expression of NaCl defense related genes including HAK21, LEA1, TSPO and EN20 in both NT and NH treated seedlings. Under field conditions, foliar applications of TU and H2O2, at vegetative growth, pre-flowering and grain filling stages, increased growth and yield attributes under both control and NaCl stress conditions. Principal component analysis revealed glutathione reductase dependent reduced ROS accumulation in source (flag leaves) and sucrose synthase mediated sucrose catabolism in sink (developing inflorescence), as the key variables associated with NT and NH mediated effects, respectively. In addition, photosystem-II efficiency, K+ retention and source-sink relationship were also improved in TU and H2O2 treated plants. Taken together, our study highlights that reducing redox environment acts as a central regulator of plant’s tolerance responses to salt stress. In addition, TU and H2O2 are proposed as potential redox-based PBRs for boosting rice productivity under the realistic field conditions.

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