Comparative bioefficacy of and chitinase against in tea ( (L.) O.Kuntze.

Tea ( (L.) O.Kuntze) is an industry-oriented economical crop in India.

Bio efficacy of indigenous biological agents and selected fungicides against branch canker disease of (Macrophoma theicola) tea under field level.

Background: Branch canker caused by Macrophoma theicola is a major stem disease of tea plants (Camellia spp.). In tea plantations, this disease causes crop loss and it is one of the major limiting factor for yield stagnation.

Electro-antennographic response of Helopeltis theivora to synthetic pesticides used in tea plantations.

Helopeltis theivora is considered as one of the major pest in tea plantations causing considerable economic damage. Recent control strategies against this notorious polyphagous pest mainly depend on the application of insecticides. The study is focused on the antennal response of H.

Chitinase from Pseudomonas fluorescens and its insecticidal activity against Helopeltis theivora.

The tea mosquito bug (TMB), Helopeltis spp. (Hemiptera: Miridae) is an insidious pest that poses a significant economical threat to tea plantations. Pseudomonas cultures are being used extensively for pest management which, however, resulting in a low mortality rate of insects and which has prompted us to search for a new microbial metabolite for TMB control.

Accumulation of Polyphenols in Tea Callus Derived from Anther.

Background: Tea is an economic important crop with high medicinal value due to rich polyphenols content. In the present research we studied the accumulation of polyphenols of regenerated callus from anthers.

Objective: Callus induction of tea anthers and accumulation of phenolic compounds from the anther-derived callus.

Biochemical and molecular analysis of (L.) O. Kuntze tea from the selected P/11/15 clone.

Green tea is one of the most important beverages consumed across the world and it possesses various phytotherapeutics. Polyphenol oxidase (PPO) activity, total polyphenols, catechins, amino acid content and enzymatic antioxidants are considered to be potential parameters in tea characterization. P/11/15 clone ( (L) O.

Molecular characterization of tea mosquito bug from tea growing regions of India.

The tea mosquito bug, Helopeltis (Hemiptera: Miridae), is an insidious pest that poses a significant economical threat to tea plantations. As a basic first step to control this pest is authentic identification, but the inability to determine morphological characters of Helopeltis species makes this process very difficult. DNA barcoding is a reliable alternative to traditional morphological identification of this pest.

Susceptibility against grey blight disease-causing fungus Pestalotiopsis sp. in tea (Camellia sinensis (L.) O. Kuntze) cultivars is influenced by anti-oxidative enzymes.

Reactive oxygen species (ROS) production is the first level of response by a host during stress. Even though the ROS are toxic to cell, when present in a limited amount, they act as a signalling molecule for the expression of defence-related genes and later are scavenged by either enzymatic or non-enzymatic mechanisms of the host. The different anti-oxidative enzymes like glutathione reductase (GR), superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APO), peroxidase (POD) and polyphenol oxidase (PPO) were estimated, and their activities were compared between infected and healthy leaves of the tolerant and susceptible cultivars of tea.

Suppressive subtractive hybridization approach revealed differential expression of hypersensitive response and reactive oxygen species production genes in tea (Camellia sinensis (L.) O. Kuntze) leaves during Pestalotiopsis thea infection.

Tea (Camellia sinensis (L.) O. Kuntze) is an economically important plant cultivated for its leaves.

Contribution of leaf growth on the disappearance of fungicides used on tea under South Indian agroclimatic conditions.

The sprayed chemicals on tea leaves disappear over a period of time by the influence of rainfall elution, evaporation, growth dilution, and photodegradation. Influence of plant growth on the four fungicides (hexaconazole, propiconazole, tridemorph, and c) was studied to know the constructive loss of fungicides. The study shows that residues of fungicides sprayed on tea shoots got diluted by the growing process.

Electrofocusing of methanolic extracts for identification of individual flavonol biomolecules in Camellia species.

An effort has been made to isolate individual catechin compounds from green tea leaves in their pure form by electrophoresis. In the present study total polyphenol extraction was carried out initially and estimated through spectrophotometric and HPLC methods. Extracted polyphenol was separated on 0.

Genetic integrity of somaclonal variants in tea (Camellia sinensis (L.) O Kuntze) as revealed by inter simple sequence repeats.

Adoption of inter simple sequence repeats (ISSR) technique to analyze the genetic variability of somatic embryo derived tea plants was evaluated. Morphological characterisation of the field grown plants revealed no identical character aligning with the parent, UPASI-10. Out of 40 primers, 15 exhibited concurrent polymorphism were selected for the study.