Indian Agricultural Statistics Research Institute

About: Indian Agricultural Statistics Research Institute is a facility organization based out in New Delhi, India. It is known for research contribution in the topics: Population & Small area estimation. The organization has 454 authors who have published 870 publications receiving 7987 citations.

Genetic characterisation and population structure analysis of indigenous and exotic eggplant (Solanum spp) accessions using microsatellite markers

Abstract: In this study, a total of 20 simple sequence repeat (SSR) markers were used to study the genetic diversity and population structure among 60 accessions of eggplant. Out of 20 SSR markers, 15 were f...

Achievability of municipal solid waste compost for tea cultivation with special reference to cadmium

Abstract: Municipal solid waste compost (MSWC) is quite often used for soil amendment in agricultural crops and yet little is known about its effect on tea (Camellia sinensis L.) cultivation. This study investigated the effect of MSWC application on cadmium (Cd) concentrations in soil, tea plants and infusions. Different doses of MSWC were added to soil with two Tocklai vegetative (TV) tea clones (TV1 and TV23) for two years in pot experiments. Several fractions of Cd in amended soils, biomass yield, Cd contents in different parts of tea plants and in tea infusions were measured. Several indexes related to risk assessment had also been calculated. The geo-accumulation index values of Cd in soil amended with MSWC ranged from –1.74 to 3.12 indicating class 0 (practically uncontaminated) to class 4 (heavily contaminated) contamination level. Average daily intakes (ADI) of Cd through tea infusion produced from tea plant amended with MSWC were 8.9 × 10–6 and 9.2 × 10–6 mg kg–1 per body weight and day for men and women, respectively, were estimated. Such values were much lower than those given in the Joint FAO/WHO Provisional Tolerable Monthly Intake Guideline for Cd. The non-carcinogenic risk values (also called hazard quotient) for Cd, estimated from the ADI values were found to be 1.78 × 10–2 and 1.94 × 10–2 mg kg–1 per day for men and women, respectively, suggesting no health hazard. The results suggested the possibility of management of MSW through composting and the feasibility of compost application for tea cultivation.

Protection from terminal heat stress: a trade-off between heat-responsive transcription factors (HSFs) and stress-associated genes (SAGs) under changing environment

Abstract: Terminal heat stress (HS) has adverse effect on the quantity and quality of wheat grains, as evident from the reduction in the yield. Plant has inherited tolerance mechanism to protect itself from the environmental stresses by modulating the expression and activity of stress associated genes (SAGs)/proteins (SAPs) which protect the plant from the damage caused by HS. Heat shock transcription factor (HSF) regulates the expression of SAGs in plant under HS. Bioinformatics and phylogenetic characterization of wheat showed the presence of 56 HSFs classified into three groups—A, B, and C. The regulation of Plant HSFs basically takes place at transcriptional, post-transcriptional, translational, and post-translation levels. It also undergoes post-translational modifications such as phosphorylation, ubiquitination, and Small Ubiquitin-like MOdifier (SUMO)-mediated degradation. The expression of Heat Shock Protein (HSP) genes in response to various stimuli is regulated by HSFs. HSF1 has been reported to be the master regulator for cytoprotective HSPs expression. HSF potentially bind and activate his own promoters as well as the promoters of other members of their gene family. HSFs perceive the elevation in temperature through different signaling molecules like H2O2, kinases and ultimately increase the expression of HSPs and other SAPs inside the cell in order to protect the nascent protein from denaturation. HSFs, being placed at pivotal position, needs to be further identified, characterized and manipulated using the advanced genetic tools in order to regulate the expression of potential genes involved in defense mechanism of plants under stress. It can also be used as potential molecular marker in wheat breeding program.

Zinc (Zn) application methods influences Zn and iron (Fe) bioavailability in brown rice

Abstract: In this study, we evaluated the possibility of increasing Zn and Fe bioavailability in twenty-six popularly grown rice cultivars by external application of Zn through soil and/or foliar means. A field experiment was conducted in an Inceptisol applying Zn through soil and/or foliar means and the harvested whole grains were processed to brown rice and subsequently analysed for Zn, Fe, phytic acid and crude protein contents. Native Zn concentration in the brown rice of those tested cultivars varied from 22.9 to 79.7 with a mean of 40.3 mg kg−1. Zn concentration in brown rice increased to the tune of 17 and 95% upon Zn application through soil and soil + foliar, respectively, over the control across the tested cultivars. Zn application further caused a decrease in the phytic acid/Zn molar ratio to the magnitude of 64.0 and 23.0% upon soil + foliar and sole soil application, respectively. The decrease in phytate/Zn molar ratio was higher in high yielding varieties followed by local varieties, aromatics and hybrids and thus increased the bioavailability of Zn in brown rice. An antagonistic effect was also observed on the iron content in brown rice upon application of Zn. The decrease in iron concentration in brown rice was higher with soil + foliar application than with only soil application of Zn. Zn application through soil + foliar over basal application could be a useful strategy to produce Zn dense grains and to reduce the phytate/Zn and phytate/Fe molar ratios and thus enhancing their bioavailability. Application of Zn fertilizers can also enhance crude protein content in brown rice.

Quantitative metabolomics approach reveals dynamics of primary metabolites in ‘Kinnow’ mandarin (C. nobilis × C. deliciosa) during advanced stages of fruit maturation under contrasting growing climates

Abstract: This study employs a quantitative metabolomics approach to study the dynamics of primary metabolites in ‘Kinnow’ mandarin as influenced by maturation and ripening under contrasting growing ...