scholarly journals Silicon In the Growth of Rice Seedlings Pretreated with Dietholate and Subjected to Cold Stress

2021 ◽  
Vol 9 (11) ◽  
pp. 398-410
Author(s):  
Jéssica Cezar Cassol ◽  
Sidinei José Lopes ◽  
Mariane Peripolli ◽  
Jaíne Rubert ◽  
Eduarda Preto Mena Barreto ◽  
...  
Keyword(s):  
Cold Stress ◽  
Seed Treatment ◽  
Sodium Metasilicate ◽  
Antioxidant Compounds ◽  
Rice Seedlings ◽  
Radicle Growth ◽  
Seed Pretreatment ◽  
Cellular Detoxification ◽  
Sodium And Potassium ◽  
Radicle Length

Silicon (Si) is an enzyme stimulator that can promote signaling for the production of antioxidant compounds, important in cellular detoxification of excess ROS accumulated during stress. The aim of the study was to evaluate the effects of Si on post-germination rice seeds in the mitigation of cold stress combined with stress induced by seed treatment with the dietholate protector. The experimental design was fully randomized with three replicates and a 3x2x2x4x2 factorial arrangement: three temperatures (5, 10 and 20 °C), two cultivars (IRGA 424 RI and Guri INTA CL), two seed pretreatments (with and without dietholate), four rates of Si (0; 4.0; 8.0 and 16 mg.L-1) and two sources of Si (sodium and potassium metasilicate). Seed pretreatment with dietholate reduced shoot and radicle length, especially at the lower temperatures of 5 and 10 °C. Sodium metasilicate as the source of Si was more efficient in boosting shoot and radicle length, both with and without pretreatment, regardless of temperature. Si was found to attenuate low-temperature stress and the impairment of shoot and radicle growth in rice seedlings grown from seeds pretreated with dietholate.

Proteomic Analysis of the Response of Liangyoupeijiu (Super High-Yield Hybrid Rice) Seedlings to Cold Stress

2006 ◽  
Vol 48 (8) ◽  
pp. 945-951 ◽  
Author(s):  
Ping-Fang Yang ◽  
Xiao-Juan Li ◽  
Yu Liang ◽  
Yu-Xiang Jing ◽  
Shi-Hua Shen ◽  
...  
Keyword(s):  
Cold Stress ◽  
Proteomic Analysis ◽  
Hybrid Rice ◽  
High Yield ◽  
Rice Seedlings

A proteomic analysis of cold stress responses in rice seedlings

PROTEOMICS ◽  
2005 ◽  
Vol 5 (12) ◽  
pp. 3162-3172 ◽  
Author(s):  
Suxia Cui ◽  
Fang Huang ◽  
Jie Wang ◽  
Xiao Ma ◽  
Yongsheng Cheng ◽  
...  
Keyword(s):  
Cold Stress ◽  
Stress Responses ◽  
Proteomic Analysis ◽  
Rice Seedlings

scholarly journals 573 Seed Vigor Testing for Small-seeded Flower Species using Computer-aided Image Analysis

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 545C-545
Author(s):  
Kay Oakley ◽  
Robert Geneve ◽  
Sharon Kester ◽  
Patchara Wonprasaid
Keyword(s):  
Seed Quality ◽  
Digital Images ◽  
Accelerated Aging ◽  
Petri Dish ◽  
Seed Vigor ◽  
Radicle Growth ◽  
Agronomic Crops ◽  
Computer Aided ◽  
Initial Seed ◽  
Radicle Length

Standardized seed vigor tests must be developed for greenhouse-grown flower species. Current vigor tests used to evaluate large-seeded agronomic crops are generally not useful for evaluating smaller-seeded flower species. One alternative is to use radicle length in seedlings grown under controlled environments as an indicator of seed vigor. For that purpose, a seed vigor test was developed that uses digital images taken using a flat bed scanner to measure radicle length in small-seeded flower species. A novel, cellulose substrate was used for germinating seeds. It provided similar moisture-holding properties to standard germination blotters used by commercial seed analysts, but is clear. This has allowed for quick image acquisition without removing seedlings from the petri dish. Correlations were made between seedling growth (radicle length, total seedling length, and total seedling area) with other vigor tests (saturated salts accelerated aging) and greenhouse plug flat emergence. For several seed lots of impatiens that varied in initial seed quality, radicle length after 4 days showed good correlations (>R2 = 0.79) with other measures of seed vigor for describing seed quality. This system is an improvement over other attempts to use computer-aided assessment of digital images because it provides digital images that do not vary due to external lighting; it uses software that can evaluate radicle length in a petri dish assay that does not require a slant-board for straight radicle growth; it relies on standard germination technics used by every seed lab; it uses a clear substrate to replace the opaque blotter to allow digital images to be taken within the petri dish; and accurate measurements of seedling parts is performed in under 2 min per petri dish.

Proteomic Analysis of Rice Seedlings Under Cold Stress

2017 ◽  
Vol 36 (4) ◽  
pp. 299-307 ◽  
Author(s):  
Li Ji ◽  
Ping Zhou ◽  
Ya Zhu ◽  
Fang Liu ◽  
Rongbai Li ◽  
...  
Keyword(s):  
Cold Stress ◽  
Proteomic Analysis ◽  
Rice Seedlings

Butylate and Carbofuran Interaction in Barley and Corn

Weed Science ◽  
1973 ◽  
Vol 21 (4) ◽  
pp. 339-342 ◽  
Author(s):  
Allan S. Hamill ◽  
Donald Penner
Keyword(s):  
Zea Mays ◽  
Hordeum Vulgare ◽  
Seed Treatment ◽  
Shoot Growth ◽  
Interaction Effects ◽  
Carbamate Pesticides ◽  
Corn Roots ◽  
Root And Shoot Growth ◽  
Radicle Length

Radicle length of barley (Hordeum vulgareL. ‘Larker’) seedlings was greatly reduced by the combination of the herbicideS-ethyl diisobutylthiocarbamate (butylate) applied in combination with the insecticide 2,2-dimethyl-2,3-dihydrobenzofuranyl-7-N-methylcarbamate (carbofuran). Corn (Zea maysL. ‘Michigan 400’) seedlings were not similarly affected. Carbofuran interacted with butylate to reduce synergistically the root and shoot growth of barley but not that of corn. The combination of these two carbamate pesticides synergistically increased respiration in barley. The basis for these interaction effects in barley appeared to be decreased metabolism of butylate and increased respiration in the presence of carbofuran. Although the same metabolism trend was apparent in tolerant corn, the butylate level was much lower since the absorption of butylate was reduced by the carbofuran seed treatment. The14C from14C-butylate preferentially accumulated in barley shoots and corn roots.

scholarly journals Priming treatments for improvement of germination and emergence of cotton seeds at low temperature

2015 ◽  
Vol 71 (1) ◽  
pp. 121-134 ◽  
Author(s):  
Hatice Çokkizgin ◽  
Yüksel Bölek
Keyword(s):  
Cold Stress ◽  
Aminolevulinic Acid ◽  
Germination Rate ◽  
Dry Weight ◽  
Hypocotyl Length ◽  
Seed Vigour ◽  
Seedling Length ◽  
Cotton Genotypes ◽  
Good Stand ◽  
Radicle Length

AbstractEarly sowing in cotton is important for obtaining a high and qualiy yield. Since cotton prefers high temperatures to have a good stand establisment, this work is important to determine better performing genotypes or to promote germination and emergence at low temperatures (<20°C). This research aimed to increase seed germination rate and seed vigour under cold stress conditions. Two cotton genotypes belonging toG. hirsutumL. species (Aydin-110 and Paymaster-2379) were primed with PEG-6000 (200, 300, 400 g/L), KNO3(2, 3, 4%), KH2PO4(0.3, 0.4, 0.5 M), NaCl (2, 3, 4%) or Mannitol (2, 4, 6%) to determine the best priming medium and its best amount. After priming, seeds were germinated in germination cabin at cold (18°C) and warm (30°C) temperatures and some characteristics (germination rates, radicle length, hypocotyl length and seedling length) were analyzed. Priming with KNO3(4% or 2%) was found to result in the highest germination rates in both cotton genotypes. The seeds of the genotypes were also primed with 5-aminolevulinic acid (ALA) (1, 10, 25 mg/L), gibberellic acid (GA3) (100, 250, 500 μM), methyl jasmonate (MeJA) (1, 3, 5 μM), acetylsalicylic acid (ASA) (1, 10, 100 μM) or kinetin (1, 5, 10 mg/L) added to KNO3(4%) medium to choose the most effective plant growth regulator (PGR) application and its dose. PGRs were observed to have reverse effects on germination rate. Finally, emergence test was conducted with KNO3(4%) and KNO3(2%) using metabolic chill test, and some traits (radicle length, radicle weight, hypocotyl length, hypocotyl weight, seedling length, seedling fresh weight and seedling dry weight) were examined. Our results suggested that priming with KNO3(2%) might be an effecient way to have vigourous cotton plants under the cold stress.

scholarly journals Effect of ultrasonic seed treatment on rice seedlings under waterlogging stress

2020 ◽  
Vol 80 (4) ◽  
pp. 561-571
Author(s):  
Suihua Huang ◽  
Yuanyuan Jia ◽  
Ping Liu ◽  
Hao Dong ◽  
Xiangru Tang
Keyword(s):  
Seed Treatment ◽  
Rice Seedlings ◽  
Waterlogging Stress

scholarly journals The Effectiveness of Several Plant Extracts to Induce Rice Plant Resistance against Bacterial Leaf Blight - (Xanthomonas oryzae pv. oryzae)

2019 ◽  
Vol 23 (1) ◽  
pp. 16
Author(s):  
Fitri Widiantini ◽  
Avissa Ayuningdiyas ◽  
Endah Yulia ◽  
Tarkus Suganda
Keyword(s):  
Plant Extracts ◽  
Seed Treatment ◽  
Defense Mechanism ◽  
Leaf Blight ◽  
Xanthomonas Oryzae ◽  
Bacterial Leaf Blight ◽  
Rice Seedlings ◽  
Control Techniques ◽  
Rice Plants ◽  
Plant Defense Mechanism

Resistant plants are one of the disease control techniques that considered to be effective. Resistant plants can be produced in various ways including the application of plant extracts. The aim of this study was to examine the ability of several plant extracts to increase the resistance of rice plants to bacterial leaf blight (BLB) caused by Xanthomonas oryzae pv. oryzae (Xoo). A total of 13 plants were extracted and applied in two methods, which were seed treatment and seedling treatment which sprayed on two-week old rice seedlings. Xoo bacteria were inoculated on rice plants two weeks after planting. The observations on the intensity of BLB disease infection showed that water hyacinth extract (Eichhornia crassippes), spiny amaranth (Amaranthus spinosus) and jasmine leaves (Jasminum grandiflorum) can suppress the development of BLB disease in both application methods. The application of plant extracts as inducing agents needs to be repeated to maintain the activated plant defense mechanism.

scholarly journals LOW-OXYGEN TREATMENT OF PREGERMINATED IMPATIENS SEEDS TEMPORARILY SUPPRESSES RADICLE ELONGATION

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1156e-1156
Author(s):  
Gary F. Polking ◽  
Richard J. Gladon ◽  
David S. Koranski
Keyword(s):  
Control Treatment ◽  
Low Oxygen ◽  
Hypocotyl Length ◽  
Radicle Growth ◽  
Radicle Elongation ◽  
Oxygen Treatment ◽  
Central Facility ◽  
Radicle Length

Generation of pregerminated seeds at a central facility and subsequent mechanical sowing at a remote facility require that radicle elongation during shipment be minimized. Low-oxygen treatments were applied to pregerminated `Super Elfin Salmon Blush' impatiens seeds to suppress radicle growth during a subsequent one-day simulated shipping period in air. In the first experiment, O2 concentrations of 0, 3, 7, 10, 13, and 20% were applied for 24 and 48hr. The 0% O2/24-hr and the 0% O2/48-hr treatments held the radicle length close to the desired length of 1.0mm, but both of these treatments decreasad 7-day hypocotyl length and percentage normal seedlings, when they were compared with the control treatment (untreated pregerminated seeds) In the second experiment, O2 concentrations of 0, 1, 2, 3, 7, and 20% were applied for 24 and 48hr. Five treatments (0, 1, and 2% O2/24-hr and 0 and 1% O2/48-hr) held the radicle to a length <1.0mm. Of these five treatments, only the 2% O2/24-hr treatment resulted in recovery parameters (7-day hypocotyl length and percentage normal seedlings) that compared with those of the control treatment.

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