scholarly journals Evaluation of the Seed Germination Vigor of Rice Varieties by Sodium Dithionite Treatment

10.5109/24050 ◽  
1994 ◽  
Vol 38 (3/4) ◽  
pp. 183-192
Author(s):  
Fumitake Kubota ◽  
Yurika Takada ◽  
Waichi Agata ◽  
Ken Ishimaru
Keyword(s):  
Seed Germination ◽  
Sodium Dithionite ◽  
Rice Varieties ◽  
Seed Germination Vigor ◽  
Germination Vigor

scholarly journals Perkecambahan benih dan pertumbuhan bibit jarak pagar (Jatropha curcas Linn.) dengan invigorasi menggunakan zat pengatur tumbuh pada periode simpan yang berbeda

2018 ◽  
Vol 2 (2) ◽  
pp. 148
Author(s):  
Indah Puspitaningtyas ◽  
Syaiful Anwar ◽  
Karno Karno
Keyword(s):  
Growth Rate ◽  
Seed Germination ◽  
Plant Growth ◽  
Growth Regulator ◽  
Jatropha Curcas ◽  
Plant Growth Regulator ◽  
Seed Storage ◽  
Vigor Index ◽  
Seed Germination Vigor ◽  
Germination Vigor

Jatropha curcas is a plant that is used as an alternative energy for fossil fuel replacement because of it’s high oil content. Jatropha curcas seeds have 30-40% oil content. The purpose of the study was to improve the seed quality and to enhance seedling growth of Jatropha curcas after storage using plant growth regulator. This study used factorial design based on Completely Randomized Design with two factors and 3 replications. The first factor was seed storage which consist of 2 levels : A1 = seed storage in 2015, A2 = seed storage in 2016. The second factor was plant growth regulator level which consists of 6 levels : B1=GA+NAA 0 ppm, B2= GA+NAA 20 ppm, B3= GA+ NAA 40 ppm, B4= GA+NAA 60 ppm, B5 = GA+NAA 80 PPM, B6 = GA+NAA 100 ppm. Parameters measured were seed germination, vigor index, growth rate, plant height and the number of leaves. The data were analyzed statistically by analysis of variance and followed by Tukey test and Polynomial Orthogonal. The result showed that seed germination, vigor index and growth rate were significantly affected by storage treatment and invigoration using plant growth regulator treatment. Invigoration using auxin and gibberellic acid 40 ppm has the highest result of seed germination, vigor index and growth rate. There was no influence of seed storage and invigoration with plant growth regulator treatment on plant height and number of leaves. Keywords : Jatropha curcas, invigoration, plant growth regulator.

scholarly journals PRIMING OF BRACHIARIA SEEDS WITH DIFFERENT SUGAR SOURCES AND CONCENTRATIONS

2018 ◽  
Vol 31 (4) ◽  
pp. 843-849 ◽  
Author(s):  
Thiago Barbosa Batista ◽  
Eliana Duarte Cardoso Binotti ◽  
Flávio Ferreira da Silva Binotti ◽  
Marco Eustáquio de Sá ◽  
Tiago Alexandre da Silva
Keyword(s):  
Seed Germination ◽  
Seed Priming ◽  
Water Control ◽  
Physical Dormancy ◽  
Beneficial Effects ◽  
Physiological Quality ◽  
Seed Germination Vigor ◽  
Urochloa Brizantha ◽  
Germination Vigor ◽  
Direct Immersion

ABSTRACT Seed priming is a practice for improving the expression of seed physiological potential. Such technique consists of synchronizing and reducing the time of seed germination by controlled hydration. The aim of this study was to evaluate the effect of seed-priming with different sugar sources and concentrations on the physiological quality Urochloa brizantha seeds and initial seedling performance. Before treating, seeds were scarified chemically with concentrated sulphuric acid (H2SO4) for 5 minutes to overcome physical dormancy. The experimental design was completely randomized in a 3 x 6 factorial scheme consisting of priming using three sugar sources (glucose, sucrose, and maltose) and six concentrations (zero [water control], 2%, 5%, 10%, 15%, and 20%), with four replicates. The seeds were primed by direct immersion for 2 hours at 25 ºC and, after hydration, they were dried for moisture equilibrium recovery. Seed germination, vigor, viability, and initial seedling growth were evaluated. The results showed that glucose was the source able to promote beneficial effects on the germination of U. brizantha cv. MG-5 seeds. Moreover, the supply of glucose at the concentrations of 2 and 5% for physiological conditioning increased seedling dry phytomass.

scholarly journals Overexpression of Nelumbo nucifera metallothioneins 2a and 3 enhances seed germination vigor in Arabidopsis

Planta ◽  
2011 ◽  
Vol 235 (3) ◽  
pp. 523-537 ◽  
Author(s):  
Yuliang Zhou ◽  
Pu Chu ◽  
Huhui Chen ◽  
Yin Li ◽  
Jun Liu ◽  
...  
Keyword(s):  
Seed Germination ◽  
Nelumbo Nucifera ◽  
Seed Germination Vigor ◽  
Germination Vigor

Action of nitric oxide on the physiological potential and biochemical mechanisms of pea seeds

2021 ◽  
Vol 43 ◽  
Author(s):  
Marcelo Coelho Sekita ◽  
Denise Cunha Fernandes dos Santos Dias ◽  
Daniel Teixeira Pinheiro ◽  
Aparecida Leonir da Silva ◽  
Antônio César Batista Matos ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Seed Germination ◽  
Seed Vigor ◽  
Water Control ◽  
No Donor ◽  
Germination Process ◽  
Physiological Quality ◽  
Pea Seeds ◽  
Germination Vigor ◽  
Pea Seed

Abstract: Nitric oxide (NO) can act in biochemical pathways of the germination process; however, there is little information about how it acts on the performance of pea seeds. The aim of this study was to evaluate the physiological and biochemical effects of NO on pea seed germination and vigor. Pea seeds cv. Itapuã 600 obtained from three seed lots with different levels of physiological quality were sown in a substrate moistened with water (control) or sodium nitroprusside (SNP) solution, a NO donor (50 μM), to assess germination, vigor, activity of antioxidant enzymes, reactive oxygen species, lipid peroxidation, and amylase activity. NO application does not alter pea seed germination, but it increases vigor. It is more effective in seeds with lower physiological potential. In addition, NO leads to reduction in oxidative stress, favors the translocation of reserves to the embryo, and has potential for use in the treatment of pea seeds to increase seed vigor.

scholarly journals Low Doses of Cuscuta reflexa Extract Act as Natural Biostimulants to Improve the Germination Vigor, Growth, and Grain Yield of Wheat Grown under Water Stress: Photosynthetic Pigments, Antioxidative Defense Mechanisms, and Nutrient Acquisition

Biomolecules ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1212 ◽  
Author(s):  
Qasim Ali ◽  
Rashida Perveen ◽  
Mohamed A. El-Esawi ◽  
Shafaqat Ali ◽  
Syed Makhdoom Hussain ◽  
...  
Keyword(s):  
Water Stress ◽  
Seed Germination ◽  
Seed Yield ◽  
Photosynthetic Pigments ◽  
Defense Mechanisms ◽  
Seed Priming ◽  
Low Doses ◽  
Antioxidative Defense ◽  
Cuscuta Reflexa ◽  
Germination Vigor

The present study was conducted to investigate the effects of Cuscuta reflexa extract (CRE) on the activities of germination enzymes, seed germination vigor, biomass production, physio-biochemical attributes, and seed yield of water-stressed wheat plants. Different levels of CRE (0, 10, 20, 30, 40, and 50%), including water soaking, were used as seed priming. Water stress negatively affected the seed germination, germination enzyme activities, growth, yield, and different physio-biochemical attributes of wheat plants. Low doses of CRE (10, 20, and 30%) ameliorated the adverse effects of water stress on seed germination attributes, and activities of germination enzymes, but negative impacts were recorded at higher doses (40 and 50%) of CRE. Water-stressed wheat plants grown from seeds pre-treated with low doses of CRE also showed better growth and yield as compared with non-treated ones, and that was associated with an improvement in water relations, photosynthetic pigments, nutrient acquisition, reduced lipid peroxidation, and better antioxidative defense mechanisms. The maximum increase in seed yield was 14.77 and 12.32%, found in plants grown from seeds treated with 20% and 10% CRE, respectively. In conclusion, it is suggested that using low doses of CRE as seed priming can contribute to better wheat yield under water stress, especially in semi-arid and arid areas.

scholarly journals Effects of Garlic Extract, Allamanda Leaf Extract and Provax -200 on Seed Borne Fungi of Rice

2012 ◽  
Vol 10 (1) ◽  
pp. 46-50 ◽  
Author(s):  
F. Yeasmin ◽  
M. Ashrafuzzaman ◽  
I. Hossain
Keyword(s):  
Aspergillus Niger ◽  
Seed Germination ◽  
Fusarium Oxysporum ◽  
Aspergillus Flavus ◽  
Fusarium Moniliforme ◽  
Leaf Extract ◽  
Allium Sativum ◽  
Bipolaris Oryzae ◽  
Rice Varieties ◽  
Nigrospora Oryzae

Seeds of rice were treated with Garlic (Allium sativum) clove extract @ 1:0, 1:1, 1:2 dilutions in water, allamanda (Allamanda cathartica) leaf extract @ 1:1, 1:2, 1:3 dilutions in water and Provax-200 @ 0.3% for controlling seed borne fungi, where the seed samples of three rice varieties viz. Katharee, Gutee Aus and Kalijira were collected from farmer’s storages of Bangladesh. The seed germination under control ranged from 64 to 77%, where treatments resulted up to 100% germination. The identified seed borne fungi of rice were Bipolaris oryzae, Curvularia oryzae, Fusarium oxysporum, F. moniliforme, Nigrospora oryzae, Aspergillus flavus, Aspergillus niger and Penicillium sp., where prevalence of Bipolaris oryzae (7.5%) and Fusarium moniliforme (8.3%) were the maximum. All the treatments significantly reduced the seed borne fungi up to 100% over the control, where Provax was found best and was statically similar to garlic (1:1) extract against seed borne pathogen of rice.DOI: http://dx.doi.org/10.3329/agric.v10i1.11064The Agriculturists 2012; 10(1): 46-50

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