SEED GERMINATION OF SOLANUM INCANUM: AN EXAMPLE OF GERMINATION PROBLEMS OF TROPICAL VEGETABLE CROPS

1978 ◽  
pp. 155-162 ◽  
Author(s):  
A. Joshua
Keyword(s):  
Seed Germination ◽  
Vegetable Crops ◽  
Solanum Incanum

scholarly journals Thrips (Thysanoptera) of vegetable crops (okro, spinach, garden egg and pumpkin) grown in Southeastern Nigeria

2011 ◽  
Vol 39 (No. 4) ◽  
pp. 132-138 ◽  
Author(s):  
E.T. Oparaocha ◽  
R.N. Okigbo
Keyword(s):  
Lower Number ◽  
Frequency Of Occurrence ◽  
Vegetable Crops ◽  
Southeastern Nigeria ◽  
Amaranthus Hybridus ◽  
Solanum Incanum ◽  
Telfairia Occidentalis ◽  
Port Harcourt ◽  
Microscopic Studies ◽  
Hibiscus Esculentus

Eight vegetable crops were sampled at five localities in Southeastern Nigeria and were found to harbour one or more species of thrips. The crops were Amaranthus hybridus, A. spinosus, Basella rubra, Solanum incanum, S. melongena, Hibiscus esculentus, Telfairia occidentalis and a species of Solanum. The sampled localities, with the frequency of occurrence of thrips, were Umuahia (29.6%), Owerri (28.5%), Port Harcourt (25.7%), Calabar (18.7%) and Enugu (6.0%). The studies revealed that crops with very heavy infloresences, e.g. Amaranthus hybridus, had a higher number of thrips (40%) per flower/leaf, while simple flowered crops like Telfairia occidentalis could only harbour a far lower number of thrips per flower/leaf. This showed a preference of these thrips for plants with heavy inflorescences which provided them with more protection, especially their larvae. Taxonomic/microscopic studies identified three species of thrips: Haplothrips gowdeyi that attacked 63% of all the sampled crops, Frankliniella schultzei was hosted by 50% of the crops, and Megalurothrips ventralis also preyed on 50% of the plant samples.  

Effect of distillery effluent on seed germination in some vegetable crops

2002 ◽  
Vol 82 (3) ◽  
pp. 273-275 ◽  
Author(s):  
S Ramana ◽  
A.K Biswas ◽  
S Kundu ◽  
J.K Saha ◽  
R.B.R Yadava
Keyword(s):  
Seed Germination ◽  
Distillery Effluent ◽  
Vegetable Crops

SALINITY AND SEED GERMINATION OF SOME VEGETABLE CROPS

1994 ◽  
pp. 305-310 ◽  
Author(s):  
G. Cucci ◽  
A. De Caro ◽  
L. Ciciretti ◽  
B. Leoni
Keyword(s):  
Seed Germination ◽  
Vegetable Crops

scholarly journals Examination of soils and crops after the inundations of 1st February, 1953. II. The influence of salt on the chief vegetable crops.

1955 ◽  
Vol 3 (1) ◽  
pp. 1-14
Author(s):  
J.G.C. Van Dam
Keyword(s):  
Seed Germination ◽  
Soil Structure ◽  
Salt Content ◽  
Leptosphaeria Maculans ◽  
Soil Layer ◽  
Index Number ◽  
Vegetable Crops ◽  
Brussels Sprouts ◽  
Poor Seed

Eleven trial fields were selected on the islands of South Holland in an investigation of the reactions of vegetables to the salt content of the soil. The C index (number of grams of NaCl per litre of soil moisture) was calculated for the 5-20 cm. soil layer, and varied from normal to 8. In fields with a high C index the following effects were observed: Before rain leaching, seed germination of leeks, spinach and carrots was poor. Seed germination of chicory was also poor where the soil structure had deteriorated; soil structure was improved by gypsum applications. The crops grew more slowly and were harvested at a later date than in normal soils. Bolting was stimulated in cabbage lettuce and spinach. Lettuce, endive and savoy cabbage showed marginal leaf scorch, and leeks showed tipburn. Phaseolus beans, peas and strawberries were very sensitive to even a low salt content. There were only slight differences in yields of brassicas sown in situ and transplanted; with leeks sowing in situ was inferior to transplanting. The forcing quality of chicory roots from salty soils was approximately the same as of those from normal soils. The cauliflower crop failed in the trial fields. Yields of leafy crops were better in soils with high than with low moisture contents. Brussels sprouts and red cabbage were more susceptible to attack by Phoma lingam [Leptosphaeria maculans] in the salt trial fields than in normal soils. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Molecular characterization of monocrotophos and chlorpyrifos tolerant bacterial strain for enhancing seed germination of vegetable crops

Chemosphere ◽  
2019 ◽  
Vol 223 ◽  
pp. 636-650 ◽  
Author(s):  
Durgesh Kumar Jaiswal ◽  
Jay Prakash Verma ◽  
Ram Krishna ◽  
Anand Kumar Gaurav ◽  
Janardan Yadav
Keyword(s):  
Seed Germination ◽  
Molecular Characterization ◽  
Bacterial Strain ◽  
Vegetable Crops

Effect of algalization on seed germination of vegetable crops

1991 ◽  
Vol 7 (6) ◽  
pp. 622-623 ◽  
Author(s):  
B. Nanda ◽  
S. K. Tripathy ◽  
S. Padhi
Keyword(s):  
Seed Germination ◽  
Vegetable Crops

scholarly journals Studies on the Allelopathic Effect of Corn Spurry (Spergula arvensis L.) on Cole Crops and English Pea

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 430D-430
Author(s):  
H.F. Harrison ◽  
J. K. Peterson ◽  
M. Snook
Keyword(s):  
Seed Germination ◽  
Brassica Oleracea ◽  
Reversed Phase ◽  
Allelopathic Effect ◽  
Dodecanoic Acid ◽  
Vegetable Crops ◽  
Sucrose Esters ◽  
Aqueous Methanol ◽  
Light Competition ◽  
Shoot Tissue

These studies were initiated to investigate severe growth inhibition observed when some vegetable crops were infested with corn spurry (Spergula arvensis L.). Interference by a natural population of the weed reduced the shoot weights of English pea (Pisum sativum L.) and collard (Brassica oleracea L.) by 93% and 72%, respectively. In a greenhouse experiment where light competition by corn spurry was prevented, broccoli (Brassica oleracea L.) shoot weights were reduced by corn spurry, but pea weights were not different from the controls. Homogenized corn spurry shoot tissue incorporated into a greenhouse potting medium inhibited the growth of both species, and a concentration effect was observed. Sequential hexane, dichloromethane, methanol, and 50% aqueous methanol extracts of corn spurry root and shoot tissue were tested for inhibitory activity using millet seed germination and broccoli seedling growth bioassays. Dichloromethane, methanol, and aqueous methanol shoot extracts were inhibitory to broccoli; whereas all shoot extracts inhibited millet germination. Shoot extracts were more inhibitory than root extracts. Further fractionation of the inhibitors using a combination of reversed-phase sephadex LH-20 and silicic acid column chromatographic procedures showed that a major portion of the millet germination inhibition was due to sucrose esters (SE). Preliminary characterization of the esters showed that there were four different SE groups. The major groups contained either octanoic or dodecanoic acid along with butanoic and petanoic acids. All groups inhibited seed germination at concentrations as low as 20 ppm. This is the first report of the SE class of defense chemicals in plant species outside of the solanaceae family.

scholarly journals Influence of biostimulators on germination parameters and early growth of sunflower seedling

2015 ◽  
Vol 60 (1) ◽  
pp. 1-9
Author(s):  
Zlatica Miladinov ◽  
Igor Balalic ◽  
Velimir Radic ◽  
Jovan Crnobarac ◽  
Milan Jockovic ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seed Quality ◽  
Early Growth ◽  
Vegetable Crops ◽  
Male Sterile ◽  
Sunflower Line ◽  
The Individual ◽  
Sunflower Seedling ◽  
Positive Effect ◽  
Germination Parameters

The aim of this paper was to examine the influence of biostimulators, with or without the use of fungicides, on seed quality parameters and early growth of sunflower seedling. Testing was conducted at the Institute of Field and Vegetable Crops in Novi Sad on cytoplasmic male sterile sunflower line HA-26-PR. The experiment included six treatments: Slavol S (25%), Slavol S (25%) + fungicide (a.m. metalaxyl-M), Bioplant Flora (2%), Bioplant Flora (2%) + fungicide (a.m. metalaxyl-M), Slavol S (25%) + Bioplant Flora (2%), Slavol S (25%) + Bioplant Flora (2%) + fungicide (a. m. metalaxyl-M) and control. Results of the research showed that treating the seed with biostimulators prior to sowing has a significant influence on seed germination parameters and early growth of sunflower seedling. The individual application of fertilizers, with or without the use of fungicide, gave a positive effect, while their combination led to a negative effect. The individual application of fertilizers, with or without combination with fungicide, may increase germination energy by 5%, germinability by 6%, but may also reduce the time of seed germination. Likewise, their use has a positive effect on early growth of sunflower seedling.

Sign in / Sign up

Export Citation Format

Share Document