Effect of Raoiella Indica Hirst (Acari: Tenuipalpidae) Infestation on Chlorophyll and Photosynthetic Efficiency of Areca Catechue

Effect of Raoiella Indica Hirst (Acari: Tenuipalpidae) Infestation on Chlorophyll and Photosynthetic Efficiency of Areca Catechue



P. Prabheena, N. Ramani 



Areca catechu L. is one of the most important
plantation crop cultivated in Kerala. Recent reports indicate that
phytophagous mites could infest the foliage and nuts of areca palm and
induce substantial damage, leading to various levels of economic loss.
Among the mites, Raoiella indica Hirst, popularly called Red Palm Mite
(RPM) has been recognized as a serious pest of areca palm in various
localities of India. Various life stages of this mite were found
colonizing and feeding on the lower surface of palm leaves, by
de-sapping and which in turn would lead to the formation of yellowish
speckles and bronzing in later stages and the ultimate drying up of the
leaves. Photosynthesis, being a vital process determining the plant
vigour and productivity should be addressed with great concern. In the
present study, attention has been focused to analyse the feeding impact
of the red palm mite, on the photosynthetic machinery of areca palms
through the quantitative estimation of chlorophyll ‘a’, ‘b’, ‘total
chlorophyll’ pigments and also ‘photosynthetic efficiency’ of mite
infested and uninfested leaves. Results of the study revealed that the
feeding activity of the mite on the leaves of A.catechu induced drastic
reduction in the levels of chlorophyll ‘a’, ‘b’, ‘total chlorophyll’ and
‘photosynthetic efficiency’. The percentage loss in chl ‘a’, chl ‘b’
and ‘total chlorophyll’ were 62.21±0.63, 57.67±0.73 and 59.884±0.375
respectively in RPM infested Areca leaves. RPM infestation varied
significantly in photosynthetic parameters such as minimum fluorescence
(F0), maximum fluorescence ( Fm), variable fluorescence (Fv), quantum
yield of photosynthesis (Fv/Fm), performance index (PI) and the Area
which has a negatively impact on photosynthetic efficiency of areca
palms. These data obtained from chlorophyll analysis and photosynthetic
efficiency were found significant at 0.05level, up on statistical
analysis using t-test, thereby establishing the pest status of RPM on
A. catcheu.



http://ijeab.com/upload_document/issue_files/26 IJEAB-NOV-2016-42-Effect of Raoiella Indica Hirst (Acari_ Tenuipalpidae) Infestation on Chlorophyll and Photosynthetic Efficiency of Areca Catechue.pdf



ijeab.com/submit-paper/

Comments

Post a Comment

Popular posts from this blog

The Ecological Impacts of Light Pollution at Night-time a Mechanistic Appraisal

The Ecological Impacts of Light Pollution at Night-time a Mechanistic Appraisal Abdullahi MG, Roslan U, Kamarudin M. K. A. Artificial light at night and its negative consequences are of great interest in the fields of Ecology, Human Geography Astronomy, and Human Health. Most of the studies to date concentrated on the influences of light pollution has on our ability to view the night sky, on biodiversity, and ecosystems. Though, in recent years, with the use of new technologies sensors, which provide accurate information for determining of night lights at the area, most consideration were given for estimating artificial light at night within the urban areas. In this study, urban night lights within the cities of Nigeria was evaluated by monitoring data from the ground measurements using Sky Quality Meter (SQM-LU-DL) devices. Besides, the SQM was used at the zenith (upward direction) for maximum evaluating of artificial light at the sites. Differences in night sky bri...
Read more

Studying the tendency of citizens to participate in the protection and development of land scape in Tehran

Studying the tendency of citizens to participate in the protection and development of land scape in Tehran Shadi Maleki, Abbas Mafi, Seyedeh Mahsa Hosseini Today, as an essential part and parcel of urban landscape that they play a major role in metabolism and create a lack of serious damage to urban life. This study performed to investigate the willingness of citizens to participate in activities to protect and develop landscapeof Tehran district 4. The research was descriptive and correlation method that is used for collecting information. The statistical population consisted of district 4 of Tehran. The sample size was determined 230 by using Cochrane method. A questionnaire was used to collect data. According to the research, 63.04 percent of citizens showed participation in a high level. Among the variables investigated how citizen participation in conservation and development of landscape, effective strategies to motivate citizens to participate,the reasons for la...
Read more

Land Use Land Cover Change Detection by Using Remote Sensing Data in Akaki River Basin

Land Use Land Cover Change Detection by Using Remote Sensing Data in Akaki River Basin Adimasu Woldesenbet Worako   Land use land cover change (LULCC) is the result of the long time process of natural and anthropogenic activities that has been practiced on the land. GIS and remote sensing are the best tools that support to generate the relevant land use/cover change in the basin. This study was conducted in the Akaki River basin to detect land use land cover changes within the 30 years period (1985-2015) by using landsat imagery data acquired from the GCF. Supervised maximum likelihood algorithm classification were deployed to classify land use/cover into four prominent land use groups and data’s were processed by using ERDAS imagine 2014 and ArcGIS10.1 software. In the basin dominant LULC was agricultural land use which accounts around 56.28% and the second largest is built-up area by 31.51% and the rest, forest(11.9%) and water body(0.31%) coverage were takes t...
Read more