PLANT-SEED TRANSMISSION OF SOYBEAN IN Colletotrichum truncatum

Nucleus ◽  
2015 ◽  
Vol 12 (1) ◽  
Author(s):  
Gabrielle de Lima MASSON ◽  
Bruno Agostini COLMAN ◽  
Paulo Rogério Beltramin da FONSECA ◽  
Alexandre Dinnys ROESE
Keyword(s):  
Seed Transmission ◽  
Colletotrichum Truncatum ◽  
Plant Seed

Transmission of weed seed by livestock: a review

2011 ◽  
Vol 51 (5) ◽  
pp. 391 ◽  
Author(s):  
J. P. Hogan ◽  
C. J. C. Phillips
Keyword(s):  
Management Practices ◽  
Germination Rate ◽  
Seed Viability ◽  
Seed Transmission ◽  
Grazing Pressure ◽  
Grazing Management ◽  
Weed Seed ◽  
Plant Seed ◽  
Native Flora ◽  
Weed Seeds

Weed seeds are readily translocated by livestock by attachment to their coat, by consumption or in vehicles used for transporting them. Livestock transport by land, sea and air is increasing worldwide, which together with increasing livestock production, is anticipated to escalate the risk of weed incursions and displace native flora. There is a particular risk of widespread weed seed dissemination in Australia with its extensive grazing practices and significant amounts of livestock movement. Consumption of weed seeds is largely dependent on grazing management practices, with lax grazing facilitating inflorescence production, the seeds of which may then be consumed if grazing pressure increases. Seed passage through the animal depends on the type of seed and animal intake and is typically 30–70 h. The germination rate of weed seeds is usually reduced by passage through the animal, but faeces in which seed is excreted also have the potential to provide nutrients and moisture to support the germinated plant. Seed viability is largely determined by the type of seed dormancy (particularly the permeability of the seed coat) and the species of livestock. It is concluded that weed seed transmission by livestock is a growing concern that requires addressing at local, national and international levels.

Agronomic performance of autumn- and winter-cropped Indian mustard (Brassica juncea L.) in response to varying levels of nitrogen fertiliser

2020 ◽  
pp. 83-95
Author(s):  
Bent Al-Hoda Asghari ◽  
Mohsen Yousefi ◽  
Katarzyna Możdżeń ◽  
Joanna Puła ◽  
Peiman Zandi ◽  
...  
Keyword(s):  
Brassica Juncea ◽  
Seed Yield ◽  
Agronomic Traits ◽  
Growth Parameters ◽  
Indian Mustard ◽  
Climatic Conditions ◽  
Plant Seed ◽  
Nitrogen Fertiliser ◽  
Nitrogen Levels ◽  
Cropping Seasons

Indian mustard (Brassica juncea L. Czern) cultivation is suggested for regions with short seasons and low rainfall. Although there have been many studies conducted on agronomic production of mustard in Iran, the information regarding the interactive impact of cropping seasons and nitrogen fertiliser on growth characteristics and yield quality of mustard plant is still insufficient and requires further investigation. This study focused on the possible implications of different cropping seasons and different nitrogen levels on selected agronomic traits in mustard. In this experiment, five different doses of nitrogen and two sowing periods were used to assess for their combined effects on the growth parameters, seed yield and agronomic characteristics of mustard in the semi-arid climatic conditions of Takestan. The results revealed that cultivation seasons and nitrogen rates had a significant effect on plant height, biomass yield, number of siliques per plant, seed oil content and seed yield.

scholarly journals Large-Scale Seedling Grow-Out Experiments Do Not Support Seed Transmission of Sweet Potato Leaf Curl Virus in Sweet Potato

Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 139
Author(s):  
Sharon A. Andreason ◽  
Omotola G. Olaniyi ◽  
Andrea C. Gilliard ◽  
Phillip A. Wadl ◽  
Livy H. Williams ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Large Scale ◽  
Seed Transmission ◽  
Potato Production ◽  
Potato Leaf ◽  
Vector Transmission ◽  
Leaf Curl Virus ◽  
Seed Coats ◽  
Potato Seedlings ◽  
Leaf Curl

Sweet potato leaf curl virus (SPLCV) threatens global sweet potato production. SPLCV is transmitted by Bemisia tabaci or via infected vegetative planting materials; however, SPLCV was suggested to be seed transmissible, which is a characteristic that is disputed for geminiviruses. The objective of this study was to revisit the validity of seed transmission of SPLCV in sweet potato. Using large-scale grow-out of sweet potato seedlings from SPLCV-contaminated seeds over 4 consecutive years, approximately 23,034 sweet potato seedlings of 118 genotype entries were evaluated. All seedlings germinating in a greenhouse under insect-proof conditions or in a growth chamber were free of SPLCV; however, a few seedlings grown in an open bench greenhouse lacking insect exclusion tested positive for SPLCV. Inspection of these seedlings revealed that B. tabaci had infiltrated the greenhouse. Therefore, transmission experiments were conducted using B. tabaci MEAM1, demonstrating successful vector transmission of SPLCV to sweet potato. Additionally, tests on contaminated seed coats and germinating cotyledons demonstrated that SPLCV contaminated a high percentage of seed coats collected from infected maternal plants, but SPLCV was never detected in emerging cotyledons. Based on the results of grow-out experiments, seed coat and cotyledon tests, and vector transmission experiments, we conclude that SPLCV is not seed transmitted in sweet potato.

Does N deposition mitigate the adverse impacts of drought stress on plant seed germination and seedling growth?

2020 ◽  
Vol 109 ◽  
pp. 103650
Author(s):  
Shu Wang ◽  
Mei Wei ◽  
Bingde Wu ◽  
Huiyuan Cheng ◽  
Kun Jiang ◽  
...  
Keyword(s):  
Drought Stress ◽  
Seed Germination ◽  
Seedling Growth ◽  
N Deposition ◽  
Plant Seed ◽  
Adverse Impacts

scholarly journals Studies on the Formosan Plant Seed Oils. XVIII

1940 ◽  
Vol 61 (12) ◽  
pp. 1288-1291 ◽  
Author(s):  
Chuta HATA ◽  
Tatsuki KUNISAKI
Keyword(s):  
Seed Oils ◽  
Plant Seed

scholarly journals Seed Transmission of Pseudoperonospora cubensis

PLoS ONE ◽  
2014 ◽  
Vol 9 (10) ◽  
pp. e109766 ◽  
Author(s):  
Yigal Cohen ◽  
Avia E. Rubin ◽  
Mariana Galperin ◽  
Sebastian Ploch ◽  
Fabian Runge ◽  
...  
Keyword(s):  
Seed Transmission ◽  
Pseudoperonospora Cubensis
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