Biomatriconditioning or biopriming with biofungicides or biological agents applied on hot pepper (Capsicum annuumL.) seeds reduced seedborneColletotrichum capsiciand increased seed quality and yield

2015 ◽  
pp. 89-96 ◽  
Author(s):  
S. Ilyas ◽  
K.V. Asie ◽  
G.A.K. Sutariati ◽  
Sudarsono
Keyword(s):  
Seed Quality ◽  
Biological Agents ◽  
Hot Pepper

scholarly journals Roles of Intra-fruit Oxygen and Carbon Dioxide in Controlling Pepper (Capsicum annuum L.) Seed Development and Storage Reserve Deposition

2006 ◽  
Vol 131 (1) ◽  
pp. 164-173 ◽  
Author(s):  
J. Blasiak ◽  
A. Kuang ◽  
C.S. Farhangi ◽  
M.E. Musgrave
Keyword(s):  
Seed Weight ◽  
Seed Quality ◽  
Atmospheric Composition ◽  
Hot Pepper ◽  
Free Treatment ◽  
Low Weight ◽  
Storage Reserve ◽  
Fruit Wall ◽  
Lower Variation ◽  
Gas Tight

Seeds developing within a locular space inside hollow fruit experience chronic exposure to a unique gaseous environment. Using two pepper cultivars, `Triton' (sweet) and `PI 140367' (hot), we investigated how the development of seeds is affected by the gases surrounding them. The atmospheric composition of the seed environment was characterized during development by analysis of samples withdrawn from the fruit locule with a gas-tight syringe. As seed weight plateaued during development, the seed environment reached its lowest O2 concentration (19%) and highest CO2 concentration (3%). We experimentally manipulated the seed environment by passing different humidified gas mixtures through the fruit locule at a rate of 60 to 90 mL·min-1. A synthetic atmosphere containing 3% CO2, 21% O2, and 76% N2 was used to represent a standard seed environment. Seeds developing inside locules supplied with this mixture had enhanced average seed weight, characterized by lower variation than in the no-flow controls due to fewer low-weight seeds. The importance of O2 in the seed microenvironment was demonstrated by reduction in seed weight when the synthetic atmosphere contained only 15% O2 and by complete arrest of embryo development when O2 was omitted from the seed atmosphere. Removal of CO2 from the synthetic atmosphere had no effect on seed weight, however, the CO2-free treatment accelerated fruit ripening by 4 days in the hot pepper. In the sweet peppers, fruit wall starch and sucrose were reduced by the CO2-free treatment. The results demonstrate that accretionary seed growth is being limited in pepper by O2 availability and suggest that variation in seed quality is attributable to localized limitations in O2 supply.

Improvement of seed quality and field emergence ofFusarium moniliforme infected sorghum seeds using biological agents

1999 ◽  
Vol 79 (2) ◽  
pp. 206-212 ◽  
Author(s):  
N S Raju ◽  
S R Niranjana ◽  
G R Janardhana ◽  
H S Prakash ◽  
H Shekar Shetty ◽  
...  
Keyword(s):  
Seed Quality ◽  
Biological Agents ◽  
Field Emergence

scholarly journals Aplikasi Agens Hayati untuk Mengendalikan Hawar Daun Bakteri pada Produksi Benih Padi

2018 ◽  
Vol 45 (3) ◽  
pp. 235
Author(s):  
Rahayu Nurkartika ◽  
Satriyas Ilyas Satriyas Ilyas ◽  
Dan Muhammad Machmud
Keyword(s):  
Bacillus Subtilis ◽  
Plant Growth ◽  
Yield Components ◽  
Seed Quality ◽  
Block Design ◽  
Biological Agents ◽  
Rice Seed ◽  
Seed Treatments ◽  
Streptomycin Sulphate ◽  
Pseudomonas Diminuta

<p align="center"><strong><em>ABSTRACT</em></strong></p><em>This experiment is a further development of several previous studies on the potential of Bacillus subtilis 5/B and Pseudomonas diminuta A6 (rhizobacteria), and Aeromonas sp. F112 (phyllobacteria) as biological agents. Research aimed to evaluate the application of biological agents to promote plant growth and to control bacterial leaf blight (BLB) disease in rice seed production. This research consisted of two experiments, the first was in the nursery while the second was in the field. The first experiment conducted in a completely randomized  design with one factor (seed treatments) and three levels, i.e., control (untreated), matriconditioning + streptomycin sulphate 0.2% (BsM), biomatriconditioning + B. subtilis 5/B + P. diminuta A6 (BM). The second experiment was conducted in a randomized complete block design with one factor (biological agent aplication methods) and nine levels, i.e., control (untreated), matriconditioning +  streptomycin sulphate 0.2% (BsM), biomatriconditioning + B. subtilis 5/B + P. diminuta A6 (BM), soaking of seedlings root with  B. subtilis 5/B + P. diminuta A6 (RA), foliar spraying with Aeromonas sp. F112 (SD), BM + RA, BM + SD, RA + SD, BM + RA+ SD. The result showed that seed treatments significantly increased field emergence. Eventhough all treatments did not significantly affect plant growth, incidency and severity level of BLB disease, and yield components, biomatriconditioning showed a better improvement in yield components. The seeds produced from plants treated with the biological agents showed significantly higher vigor index than untreated and matriconditioning + streptomycin sulphate 0.2%. </em><br /><br /><em>Keywords: Aeromonas sp., Bacillus subtilis, biomatriconditioning, seed quality, Pseudomonas diminuta</em>

scholarly journals Halogens, alcohols and potassium permanganate extend the storability of hot pepper seeds (Capsicum annuum l.) under accelerated ageing conditions

2013 ◽  
Vol 21 (2) ◽  
pp. 131-138
Author(s):  
Deepu Mathew ◽  
S.D. Doijode ◽  
K. Madhavi Reddy
Keyword(s):  
Moisture Content ◽  
Potassium Permanganate ◽  
Seed Quality ◽  
Seed Viability ◽  
Dry Weight ◽  
Accelerated Ageing ◽  
Hot Pepper ◽  
Seed Moisture Content ◽  
Seed Vigour ◽  
Seed Moisture

ABSTRACT The feasibility of extending the storability of fresh hot pepper seeds, by modifying the storage atmosphere, using the respiration inhibitors and seed desiccants was examined. Halogens such as chlorine, bromine and iodine and methanol, ethanol and potassium permanganate were used for a period of 22 months under accelerated ageing conditions of high seed moisture and temperature. The various seed quality parameters - viability, vigour, speed of germination, seedling dry weight, and moisture content were evaluated. In the untreated control, decreased seed viability was observed within 10 months of storage. However, iodine and chlorine were proved effective in retaining high seed viability up to 90.7 and 88.0%, respectively, even after 22 months of storage. Chlorine treatment was able to retain the seed vigour (904.0), iodine (766.4), KMnO4 (754.4) and methanol (566.7) whereas the value of vigour index in control was 72.0. Chlorine and iodine were on par in their ability to maintain the speed of seed germination (25.2 and 24.8, respectively), followed by KMnO4 (20.2). Seedling dry weight was proved as a parameter not sensitive in estimating the seed quality since even after 22 months storage of seeds at atmospheres of chlorine, iodine, KMnO4 and methanol did not show any differences. KMnO4 sharply reduced the seed moisture content from 9.83 to 7.89% providing better storability over the control.

scholarly journals Peningkatan Mutu Fisiologis dan Daya Simpan Benih serta Ketahanan Patogen dan Agen Hayati pada Benih Padi Berpelapis

2017 ◽  
Vol 44 (3) ◽  
pp. 242
Author(s):  
Tantri Palupi ◽  
Satriyas Ilyas ◽  
Muhammad Machmud ◽  
Dan Eny Widajati
Keyword(s):  
Seed Quality ◽  
Storage Period ◽  
Germination Percentage ◽  
Positive Control ◽  
Negative Control ◽  
Biological Agents ◽  
Xanthomonas Oryzae ◽  
Seed Coating ◽  
Arabic Gum ◽  
Main Plot

<p><em></em><em>ABSTRACT<br /><br />Xanthomonas oryzae pv. oryzae (Xoo), is a seedborne pathogen causing bacterial leaf blight (BLB) disease, and reduces the quality of seed and rice production. One of the efforts to control the BLB disease and to improve the quality Xoo infected seeds is the seed coating technique enriched with biological agents. The experiment was aimed to study the effect of coating on seed quality and storage life, as well as the Xoo and biological agents resistence (P. diminuta A6 and B. subtilis 5/B) on the seeds. The experiment was carried out from August 2011 to March 2012, using a split plot design with four replications. The main plot was storage period, i.e. 0, 1, 2, 3, 4, 5, 6, and 7 months. The sub plot was seed coating treatment consisted of negative control (healthy seed); positive control (seeds contaminated with Xoo); seed infested with biological agens;  alginate 3% + 1% peat + biological agents; arabic gum 3% + 1% gypsum + biological agents; CMC 1.5% + 1% talc + biological  agents;  and  bactericide  streptomycin  sulfat 20%. The  coated  seeds were  stored an air-conditioned room (18-20 °C,  RH  48-50%). The results showed that the treatments were able to maintain seeds quality during storage, i.e. germination percentage, uniformity percentage, and vigor index, better than those of the positive control. The P. diminuta A6 was still presence (0.08 x 106 cfu mL-1) in seeds coated after 7 month storage, and the B. subtilis 5/B was still presence (0.07 x 106 cfu mL-1) up to 6 month storage with 3% arabic gum + 1% gypsum + biological agents.  <br /><br />Keywords: Bacillus subtilis 5/B, Pseudomonas diminuta A6, seed quality, storage space, Xanthomonas oryzae pv. oryzae<br /><br /></em><em> </em></p>

scholarly journals Physiological seed quality of ‘BRS Mari’ hot pepper during seed development and maturation

2019 ◽  
pp. 205-208
Author(s):  
E.V. Justino ◽  
A.C. Amaral-Lopes ◽  
P.P. Silva ◽  
W.M. Nascimento
Keyword(s):  
Seed Development ◽  
Seed Quality ◽  
Hot Pepper

Occurrence of “Fish Mouth” Seeds in Hot Pepper (Capsicum annumL.) and Effect on Seed Quality

2013 ◽  
Vol 26 (2) ◽  
pp. 353
Author(s):  
Rakesh C. Mathad ◽  
Basavegowda ◽  
S B Patil ◽  
S N Vasudevan
Keyword(s):  
Seed Quality ◽  
Hot Pepper
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