Fate and Transformation of CuO Nanoparticles in the Soil–Rice System during the Life Cycle of Rice Plants

2017 ◽  
Vol 51 (9) ◽  
pp. 4907-4917 ◽  
Author(s):  
Cheng Peng ◽  
Chen Xu ◽  
Qinglin Liu ◽  
Lijuan Sun ◽  
Yongming Luo ◽  
...  
Keyword(s):  
Life Cycle ◽  
Cuo Nanoparticles ◽  
Rice Plants

Ferrous Ions Inhibit Cu Uptake and Accumulation via Inducing Iron Plaque and Regulating Metabolism of Rice Plants Exposed to CuO Nanoparticles

2021 ◽  
Author(s):  
Peng Yuan ◽  
Cheng Peng ◽  
Jiyan Shi ◽  
Jianshe Liu ◽  
Dongqing Cai ◽  
...  
Keyword(s):  
Cuo Nanoparticles ◽  
Iron Plaque ◽  
Ferrous Ions ◽  
Rice Plants ◽  
Cu Uptake

Ferrous ions (Fe2+) in the rhizosphere play an indispensable role in the interaction between plants and nanoparticles (NPs). Here, we investigated the effect of Fe2+ (3 mM) on the dynamic...

Changes in release level of momilactone B into the environment from rice throughout its life cycle

2003 ◽  
Vol 30 (9) ◽  
pp. 995 ◽  
Author(s):  
Hisashi Kato-Noguchi ◽  
Takeshi Ino ◽  
Masahiko Ichii
Keyword(s):  
Life Cycle ◽  
Release Rate ◽  
Rice Plant ◽  
Growth Inhibitor ◽  
Rice Plants ◽  
Flowering Initiation ◽  
Single Rice ◽  
Germination And Growth

Momilactone B was released into the neighboring environment from rice throughout its life cycle. The rate of momilactone B release from rice increased until flowering initiation, and then decreased. The release rate of momilactone B at the day of flowering started was 2.1 μg plant–1 d–1. On average, a single rice plant released about 100 μg of momilactone B into the neighboring environment over its life cycle. Since momilactone B is a growth inhibitor, these results suggest that momilactone B released from rice plants may serve as an allelochemical to inhibit the germination and growth of neighboring plants.

scholarly journals Environmental exposure of a simulated pond ecosystem to a CuO nanoparticle-based wood stain throughout its life cycle

2018 ◽  
Vol 5 (11) ◽  
pp. 2579-2589 ◽  
Author(s):  
Mélanie Auffan ◽  
Wei Liu ◽  
Lenka Brousset ◽  
Lorette Scifo ◽  
Anne Pariat ◽  
...  
Keyword(s):  
Life Cycle ◽  
Environmental Exposure ◽  
Cuo Nanoparticles ◽  
Pond Ecosystem ◽  
Aquatic Mesocosms ◽  
Cuo Nanoparticle

Indoor aquatic mesocosms were used to assess the behavior of a wood stain containing CuO nanoparticles in a simulated pond ecosystem for 1 month.

scholarly journals Biological of black bug Paraeuscosmetus pallicornis (Hemiptera: Lygaeidae) on two varieties of rice plants at laboratory

1970 ◽  
Vol 5 (2) ◽  
pp. 229-236
Author(s):  
Nurhabibah ◽  
Cyccu Tobing ◽  
Hasanuddin
Keyword(s):  
Life Cycle ◽  
Rice Plants ◽  
Randomized Design ◽  
Plant Pest ◽  
Agricultural Faculty ◽  
Descriptive Method ◽  
Total Life

The objective of the research was to study the biology of black bug Paraecosmitus palicornis insects on two varieties of rice at laboratory. The research was conducted at Plant Pest Laboratory of Agricultural Faculty University of Sumatera Utara, Medan from September to December 2017. The research used by descriptive method and complete randomized design with nine replications. The results showed that total life cycle on Mekongga varieties was ±27.1 days and a female laids ±41.56 eggs. Total life cycle on Mapan 05 varieties was ±26.2 days and female laids ± 12,55 eggs.

scholarly journals Biologi dan statistik demografi kutudaun Rhopalosiphum rufiabdominale (Sasaki) dan Tetraneura nigriabdominalis (Sasaki) (Hemiptera: Aphididae) di akar padi

2020 ◽  
Vol 16 (3) ◽  
pp. 180
Author(s):  
Purnama Hidayat ◽  
Harleni Harleni ◽  
Yani Maharani ◽  
Hermanu Triwidodo
Keyword(s):  
Growth Rate ◽  
Life Cycle ◽  
Doubling Time ◽  
Demographic Variable ◽  
Aphid Species ◽  
Intrinsic Growth Rate ◽  
Statistical Parameters ◽  
Rice Plants ◽  
Rice Roots ◽  
Important Pest

<p><em>Rhopalosiphum </em><em>rufiabdominale</em> (Sasaki) and <em>Tetraneura nigriabdominalis</em> (Sasaki) are aphid species found in the roots of rice plants. Information about the host range and biology of <em>R. </em><em>rufiabdominale</em> is relatively known than <em>T. nigriabdominalis</em>. This study aims to determine the biology and demographic statistics of <em>R. </em><em>rufiabdominale</em> and <em>T. nigriabdominalis</em> in the roots of rice plants. The aphids obtained from lowland rice roots in Leuwiliang, Bogor Regency were maintained and reared in Ciherang variety rice roots in the laboratory. Each individual of the 1st instar aphid nymph in the same cohort was infested into the roots of rice in 60 plastic containers for biological observations and statistical demographic variable data collection. Survivorship (l<sub>x</sub>), fecundity (m<sub>x</sub>), and the average number of nymphs born by adult every day at age (x) are used to calculate demographic statistical parameters. The results showed that the two species of the aphids have 4 nymph instars. Life cycle and longevity of <em>R. </em><em>rufiabdominale</em> were 4.98 days and 15.94 days with fecundity of 67.44 respectively, whereas the life cycle and longevity of <em>T. nigriabdominalis </em>were 5.25 days and 18.11 days with fecundity of 11.11 respectively. <em>R. </em><em>rufiabdominale</em> aphids have an intrinsic growth rate (r) of 0.46 days and a doubling time (DT) of 1.50 days, whereas <em>T. nigriabdominalis</em> has an intrinsic growth rate of 0.14 days and a doubling time of 4.99 days. The results of this study indicate that although the life cycle lengths of the two species are almost the same, the population of <em>R. </em><em>rufiabdominale</em> develops 3.5 times faster than <em>T. nigriabdominalis</em> and therefore <em>R. </em><em>rufiabdominale</em> has the potential to become an more important pest in rice plants.</p>

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