Chander Malik

Chander Malik
Jaipur National University · School of Life and Basic Sciences

M.Sc., Ph D., Ph D

About

61
Publications
6,266
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873
Citations
Citations since 2017
6 Research Items
249 Citations
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040

Publications

Publications (61)
Article
Social protection is regarded as a basic human right guaranteed in several International Covenants and Treaties. The Constitution of Pakistan exclusively stipulates the provision of social security for all citizens of the country. The aim of the study is to explore and evaluate the social protection schemes with regards to its coverage, scope and o...
Article
Social protection is regarded as a basic human right guaranteed in several International Covenants and Treaties. The Constitution of Pakistan exclusively stipulates the provision of social security for all citizens of the country. The aim of the study is to explore and evaluate the social protection schemes with regards to its coverage, scope and o...
Article
Foeniculum vulgare has been considered as an important medicinal plant. Morphological and molecular characterization of this aromatic herb will enhance our understanding in improving its optimal yields through breeding. Fennel seeds of 7 genotypes lines, namely, FNL-41, 46, RF 101, 125, 143, 178 and 205, grown in Rajasthan were used for morphologic...
Article
Inter simple sequence repeats (ISSRs) and random amplification of polymorphic DNA (RAPD) were used to determine genetic relationships and variety specific markers in fennel varieties grown in Rajasthan. In this study, the percentage polymorphism revealed by RAPD and ISSR was 50 and 39.1%, respectively. Dendrogram constructed from unweighted pair gr...
Article
Abstract Background: The present study reports the inhibitory effects of biogenic nanoparticles synthesized from Tridax procumbens stem (fresh and powder) aqueous extract on seed germination and seedling growth of Vigna radiata. These synthesized nanoparticles were well characterized by UV-visible spectroscopy; SEM; XRD and FTIR analysis. The const...
Article
Fennel (Foeniculum vulgare Mill), wild or cultivated, is widely distributed throughout the world and belongs to the Apiaceae family. It is an old medicinal plant and has been commonly used as a traditional food and medicine. Fennel seeds are used for their anti-inflammatory, antispasmodic, antimicrobial properties and oestrogen-promoting action. Re...
Article
A quantitative categorization of seed storage proteins profiles of 8 varieties of Trigonella foenum graecum was performed by sodium dodecyl sulphate- polyacrylamide gel electrophoresis (SDS-PAGE). This technique was used to explore the level of genetic discrepancy in Trigonella. Total soluble proteins were resolved on 10% resolving gel. A total of...
Article
The present study quantifies the micro and macronutrients in the mature cotton fibres of one short staple and six long staple varieties and correlated with fibre strength, length and fineness. The role of macronutrients like Ca<sup>+</sup>, Mg<sup>2+</sup>, Na<sup>+</sup> and K<sup>+</sup>, and micronutrients Mn<sup>2</sup>+, Zn<sup>2+</sup> and Fe...
Article
Significant crop loss is observed when plant is subjected to environmental stress. One of the major problems faced in late sown varieties of wheat is low temperature stress during the months of Nov.-Dec. Because of low temperature, in these varieties more input of seeds is required and very less yield is obtained due to the poor seedling growth and...
Article
Due to its tremendous impetus of modulating metals into their nanosize, nanotechnology is a combined influence of microelectronics, medical imaging and computer aided engineering and manmade polymers. Nanoparticles have gained much interest due to their high surface volume ratio. This leads to the alteration in its mechanical, thermal and catalytic...
Article
Use of nanoparticles in various fields is raising their demand day by day. Different wet chemical methods are frequently used for the preparation of metallic nanoparticles. However, the chemicals used are generally harmful and inflammable. In the present investigation we describe a cost effective and eco friendly technique for green synthesis of si...
Article
The present investigation was carried out on the experimentally-induced mutations with gamma rays on the seeds of Verbesina encelioides Benthem and Hooker. Ionizing radiations altered the mean total seed germination and also temporal patterns of the germination when compared with control. Higher doses were deleterious for most of the seed parameter...
Article
Full-text available
This paper deals with the in vitro effects of brassinosteroids (BRs) on growth in the form of multiple shoots, chlorophyll content, Hill reaction activity (HRA), activities of catalase (CAT), peroxidase (POX), polyphenol oxidase (PPX), and ascorbate peroxidase (APX) in Arachis hypogaea L. genotypes (M-13 and PBS24030). In vitro impact of BR on shoo...
Article
Cytogenetical and molecular studies in Argemone mexicana Lin. (2n = 28) and A.ochroleuca ssp. ochroleuca Sweet. (2n = 56) showed exclusive bivalent pairing at meiois; their triploid hybrid had, univalents, bivalents and trivalents; autotetraploid of diploid A. mexicana had bivalents and quadrivalents and polyhaploid of A. ochroleuca showed bivalenc...
Article
Full-text available
Variable leaf segments of Verbesina encelioides exhibited different responses when cultured on MS supplemented with 0.5 mg/l BAP. With the addition of IAA/NAA to the basal medium completely inhibited the formation and growth of callus. Endogenous content of IAA in the different segments of the leaf when assayed revealed that middle segment had high...
Article
Various industrial and other anthropogenic activities have considerably increased the levels of heavy metals in the environment. These metals restrict the plant growth and pose a threat to human life. Experiments were conducted to assess the effects of heavy metals on various physiological parameters in Brassica juncea cvs. Further, whether hardeni...
Article
Full-text available
The intent of present study was to assess the varietal differences in epicuticular wax (ECW) content in peanut (Arachis hypogaea L.) genotypes M-13 and PBS24030. Complete plants were regenerated from in vitro-sectioned embryonated cotyledons i.e. coteledonary node (CN). Multiple shoots arose on varying concentrations of 0.1% Brassinolides (BR) of G...
Article
Full-text available
3 Abstract: An efficient protocol for plant regeneration has been developed for crop improvement programs. The present study was designed to assess the regeneration response of cotyledonary node explant taken from the germinating seeds of peanut (Arachis hypogaea L.). Complete plants were regenerated from in vitr o cultured sectioned cotyledonary n...
Article
Full-text available
Plants of spreading (cv. M-13) and semi-spreading (cv. Girnar-2) type 3 of groundnut (Arachis hypogaea L.) were foliar sprayed separately with different plant growth regulators (PGRs) e.g. Brassinolides (250 ppm), ethephon (250 ppm), Planofix (Naphthyl Acetic Acid; NAA; 50 ppm); Triacontanol (10 ppm), Cytozyme (Gibberellic acid (GA), 100 ppm), Bioe...
Article
A decrease in net photosynthesis (Pn) in leaves of main shoot with age (7-28 days after opening) at two stages of peanut (Arachis hypogaea L. var. M-13) reproductive growth (70 and 90 DAS) is reported. Pn rate decreased with advance in age of leaves, the decline was rapid during peak period of pod filling (90 DAS). Foliar application with aliphatic...
Article
Cotton ovules collected during late September with prevalent night cool temperature (15C), cultured at 30C/15C i.e. cycling temperatures in Beasley and Ting medium had very few epidermal cells showing bulging. Supplementing cultures with guaianolide derivative I (E-13 methyldehydrocostus lactone) promoted fibre initiation. At—1 day preanthesis (DPA...
Article
Osmotic priming of aged onion seeds with 25% polyethylene glycol-8000 for 5 d resulted in a marked increase in the rate of germination and early seedling growth. Priming reduced electrolyte leakage as well as lipid peroxidation in seeds implying the activation of membrane repair processes. Priming was also associated with increased levels of antiox...
Article
In developing groundnut (Arachis hypogaea) kernels, the most active period of lipid, chiefly triacylglycerol (TG) accumulation is between 15 and 35 days after podding (DAP). Between 5 and 15 DAP starch content was enhanced but declined thereafter up to maturity. With progressive development of kernels both phospholipids and free fatty acids decreas...
Article
This work is an investigation of the influence of ABA and calcium on soluble and wall-bound activities of peroxidase and O-diphenol oxidase of cotton fibres at the stages of primary and secondary wall development, during incubation of intact fibres for 3h at 28C. ABA (10 M) caused marked inhibition of enzyme activities in both the fractions, wherea...
Article
In the recent years phenolics have gained importance as PGR(s) [plant growth regulators]. To study their effect on pod development in peanut, four phenolic compounds (H-acid, 1,2,4-acid, resorcinol, and RD-Brown) were used in a field experiment with two foliar spray applications of 100 and 200 ug/mL at 35 and 50 days after planting. A randomized bl...
Article
Changes in endogenous levels of IAA, GA3 and ABA during in vivo fibre growth of Gossypium arboreum L. cv. LD 230 revealed an overriding influence of ABA in restricting the rate of fibre elongation. No relationship between IAA levels and extent of fibre elongation was discernible. The fibre growth of unfertilized cotton ovules cultured in vitro was...
Article
The germination performance of maize seeds ( Zea mays L. cv. Partap-1) pre-treated individually with the substituted phthalimide AC 94,377 (1-(3-chlorophthalimido)-cyclohexanecarboxamide), GA 4&plus;7 and ABA was markedly improved under sub- and supra-optimal temperature regimes. ABA was especially stimulatory at the sub-optimal temperature. Metabo...
Article
Mixtalol (a mixture of long chain aliphatic alcohols varying in chain length from C24 to C32) applied to Brassica juncea plants as foliar spray caused an increase in secondary and tertiary branching with consequent enhancement in seed yield through increased number of inflorescences and siliquae per plant. The percentage of immature siliquae and sh...
Article
Plants of spreading type of groundnut (Arachis hypogaea cv. M-13) were given foliar sprays separately with phenolic compound β-naphthol-1-amino, 4-sulphonate (50, 100, 150 μg/ml) and a mixture of aliphatic alcohols—C-24 to C-34 (1 μg/ml) at 30 and 37 days after flowering. In the treated plants, the total number of flowers produced per plant, number...
Article
Osmotic priming of maize seeds ( Zea mays L. cv. Partap) using polyethylene glycol or potassium salts (K 2 HPO 4 , KH 2 PO 4 , KNO 3 and K 2 HPO 4 &plus;KNO 3 ) resulted in accelerated germination at a chilling temperature (10 °C). The response of seeds primed in solutions of either 2.5&percnt; K 2 HPO 4 or 2.5&percnt; K 2 HPO 4 &plus; KNO 3 was pa...
Article
Exogenous application of 1-amino; 4-sulphonate, β-naphthol; 8-amino; 3–6 disulphonate, γ-naphthol; 1, 3-dihydroxybenzene and 4, 6-Bis (diazonaphthalene sulphonate-resorcinol) 5, 20, 50 ppm) increased number of pods per plant, number of seeds/pod and improved the yield (kg/ha) in chickpea. Some of the compounds enhanced total free amino acids and so...
Article
Activities of the enzymes of non-photosynthetic C4 dicarboxylic acid metabolism (viz. phosphoenolpyruvate carboxylase, NAD-malate dehydrogenase, NADP-malic enzyme, glutamate-oxaloacetate transaminase) and pyruvate kinase and aspartate-α-ketoglutarate transaminase showed imbibitional changes in germinating seeds of wheat (Triticum aestivum L. cv. WL...
Article
Exogenously added salicylic acid. (5–25 ppm) and tannic acid. (5–20 ppm) reduced stomatal aperture and caused complete closure in isolated epidermal peelings ofEuphorbia hirtaL. Studies on some enzyme activities revealed that both phenols drastically reduced the activity level of acid phosphatase and ATPase compared with the controls. The probable...
Article
Exogenously applied 1-amino-4-sulphonate-β-naphthol increased the oil content and altered the fatty acid composition of the semispreading variety C-501 of peanut. The content of oleic acid decreased while that oflinoleic acid increased in the kernels of treated plants.
Article
Abscisic acid promoted tube elongation, 14CO2 fixation and phosphoenolpyruvate carboxylase activity during in vitro germination of Amaryllis vittata Ait. pollen. Other growth regulators tested viz. indol-3yl-acetic acid, gibberellic acid, N6-benzyladenine and ethephon did not affect pollen tube elongation at 1 g/ml concentration but inhibited it at...
Article
Plants of peanut (Arachis hypogaea L. var. PG No. 1) were given two foliar sprays of phenolic compounds (H-acid, 1, 2, 4-acid, resorcinol and RD-Brown) at 100 and 200 ppm, 35 and 50 days after sowing. In treated plants, shelling %, yield (kg/ha), number of gynophores per plant and number of pods per plant were significantly greater than in the cont...
Article
Soluble and wall-bound activities of acid phosphatase, β-glucosidase, α-galactosidase and invertase in the ovules ofGossypium arboreum L. andGossypium hirsutum L. are implicated in the hydrolysis and translocation of substrates during pre- and postanthesis phases. The physiological functions of these hydrolytic enzymes are discussed in relation to...
Chapter
An essential role of boron has been persistently confirmed for angiosperms, especially in plants virion possess well-developed xylem. Based on the available studies, the following putative major roles for this microelement may be assigned: I, at the whole plant level (control of growth and differentiation; II., at the physiological level (regulatio...
Article
Effect of varying relative humidity (35 to 100%) on the shape, volume, ratio of major: minor axis and fresh weight of Amaryllis vittata pollen is described. In vitro and in vivo carboxylation is also compared. High RH (80 and 100%) accelerated 14C02 fixation while PEP carboxylase did not increase noticeably. At 100% RH, level of 14C02 fixation incr...
Article
Subcellular distribution of phosphoenolpyruvate carboxylase in germinating Amaryllis vittata AIT. pollen during early and late phase of pollen germination is examined. Carbon fixation in Amaryllis pollen is known to occur non-photosynthetically through β-carboxylation mediated by phosphoenol pyruvate carboxylase. The subcellular distribution of enz...
Chapter
Publisher Summary This chapter discusses the various facets of cotton-fiber development and focuses on some currently critical areas of investigation. In addition to its commercial importance, cotton fiber has several attributes that make it an experimental system of choice for the investigation of physiological and biochemical changes accompanying...
Article
Full-text available
ABA and calcium on dark fixation of carbon dioxide in cotton fibres. -Phyton (Horn, Austria) 33 (1): 1-6, 1 figure. -English with German summary. The influence of ABA and calcium on dark fixation of CO 2 by cotton fibres (Gossypium hirsutum L. cv. F 414) was studied at the stage of 15 days after anthesis, denoting the phase of primary wall developm...
Article
A study has been made of the dark metabolism of CO2 by elongating fibres of Gossypium arboreum L. cv. LD 133 (a short staple type) and Gossypium hirsutum L. cv. LH 372 (a long staple type) at different fibre ages. In both cultivars, phosphoenolpyruvate carboxylasc, glutamate-oxalacetate transaminase and malate dehydrogenase show elevated activities...
Article
The effect of different spectral quality of light is studied on pollen germination and pollen tube length in Campsis grandiflora. Both the processes appear to be mediated through phytochrome. Blue light was more effective in the last phase of pollen tube elongation and presumably regulated the endogenous level of IAA through IAA-oxidase system.
Article
Indole-3-acetic acid (IAA) and gibberellic acid (GA3) enhanced the formation of roots on the stem cuttings of Abelmoschus esculentus. The effect increased considerably when both IAA and GA3 were applied together.
Article
Hypocotyl cuttings of Phaseolus mungo rooted in water and most profusely in IAA. 1 mg/1 Act-D + IAA significantly increased rooting. The fluctuations of peroxidase, IAA oxidase and amylase activities appear to be associated with the production of roots through the regulation of endogenous contents of nutrition and auxin.
Article
This report gives practical, explanatory information on the installation, operation, and maintenance of VHF Electronic Polarimeters and on the reduction of data for computations of ionospheric total electron content (TEC). It should be used by Air Weather Service maintenance and observer personnel engaged in making real-time TEC measurements, and i...
Article
The development of suspensor in Brassica campestris is of the “Onagrad type”; The suspensor growth was maximum between the globular and heart stage of embryo development. There after, the suspensor diminished and immediately after the torpedo stage, it degenerated, Several enzymes (e. g. acid-, alkaline-, adenosine triphosphatase, peroxidase, succi...

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Question (1)
Question
Can anyone recommend methods to estimate tocopherols and terehalose in plant tissues under stress? (other than HPLC)

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