10 research outputs found
Not Available
Chara anusandhan evam pashudhan vikas ke naye aayam (ed. Tomar P.S., et al.,) Pub. IGFRI, Janshi, 209p.Not AvailableNot Availabl
Mutation spectrum of RB1 mutations in retinoblastoma cases from Singapore with implications for genetic management and counselling
10.1371/journal.pone.0178776PLoS ONE126e017877
Physiological traits for shortening crop duration and improving productivity of greengram (V. radiata (L.) Wilczek) under high temperature
Not AvailableGreengram is an important protein-rich food legume crop. During the reproductive stage,
high temperatures cause flower drop, induce male sterility, impair anthesis, and shortens
the grain-filling period. Initially, 116 genotypes were evaluated for 3 years in two locations,
and based on flowering, biomass, and yield attributes, they were grouped into four major
clusters. A panel of 17 contrasting genotypes was selected for their heat tolerance in
high-temperature greenhouses. The seedlings of the selected genotypes were exposed
to heat shock in the range 37°C–52°C and their recovery after heat shock was assessed
at 30°C. The seedlings of EC 398889 turned completely green and rejuvenated, while
those of LGG 460 failed to recover, therefore, EC 398889 and LGG 460 were identified
as heat-tolerant and heat-sensitive genotypes, respectively. Except for EC 398889, the
remaining genotypes could not survive after heat shock. Fresh seeds of EC 398889 and
LGG 460 were planted in field and pollen fertility and sucrose-synthase (SuSy) activity in
grains were assessed at high temperatures. The pollen germination and SuSy activity were
normal even at temperatures beyond 40°C in EC 398889 and high SuSy activity enabled
faster grain filling than in LGG 460. The precise phenotyping demonstrated significant
differences in the light-temperature response of photosynthesis, chlorophyll fluorescence
imaging of quantum yield (Fv/Fm), and electron transport rate (ETR) between heat-tolerant
(EC 398889) and heat-sensitive (LGG 460) genotypes. Molecular profiling of selected
accessions showed polymorphism with 11 SSR markers and the markers CEDG147,
CEDG247, and CEDG044 distinguished tolerant and sensitive groups of accessions.Not Availabl
Land use/land cover identification in an alpine and arid region (Nubra Valley, Ladakh) using satellite remote sensing
Determination of diffusion coefficients of hydrogen and deuterium in Zr–2.5%Nb pressure tube material using hot vacuum extraction-quadrupole mass spectrometry
New vegetation type map of India prepared using satellite remote sensing: comparison with global vegetation maps and utilities
A seamless vegetation type map of India (scale 1: 50,000) prepared using medium-resolution IRS LISS-III images is presented. The map was created using an on-screen visual interpretation technique and has an accuracy of 90%, as assessed using 15,565 ground control points. India has hitherto been using potential vegetation/forest type map prepared by Champion and Seth in 1968. We characterized and mapped further the vegetation type distribution in the country in terms of occurrence and distribution, area occupancy, percentage of protected area (PA) covered by each vegetation type, range of elevation, mean annual temperature and precipitation over the past 100 years. A remote sensing-amenable hierarchical classification scheme that accommodates natural and semi-natural systems was conceptualized, and the natural vegetation was classified into forests, scrub/shrub lands and grasslands on the basis of extent of vegetation cover. We discuss the distribution and potential utility of the vegetation type map in a broad range of ecological, climatic and conservation applications from global, national and local perspectives. Weused 15,565 ground control points to assess the accuracy of products available globally (i.e., GlobCover, Holdridge’s life zone map and potential natural vegetation (PNV) maps). Hence we recommend that the map prepared herein be used widely. This vegetation type map is the most comprehensive one developed for India so far. It was prepared using 23.5m seasonal satellite remote sensing data, field samples and information relating to the biogeography, climate and soil. The digital map is now available through a web portal (http://bis.iirs.gov.in)
New vegetation type map of India prepared using satellite remote sensing: Comparison with global vegetation maps and utilities
International audienceA seamless vegetation type map of India (scale 1: 50,000) prepared using medium-resolution IRS LISS-III images is presented. The map was created using an on-screen visual interpretation technique and has an accuracy of 90%, as assessed using 15,565 ground control points. India has hitherto been using potential vegetation/forest type map prepared by Champion and Seth in 1968. We characterized and mapped further the vegetation type distribution in the country in terms of occurrence and distribution, area occupancy, percentage of protected area (PA) covered by each vegetation type, range of elevation, mean annual temperature and precipitation over the past 100 years. A remote sensing-amenable hierarchical classification scheme that accommodates natural and semi-natural systems was conceptualized, and the natural vegetation was classified into forests, scrub/shrub lands and grasslands on the basis of extent of vegetation cover. We discuss the distribution and potential utility of the vegetation type map in a broad range of ecological, climatic and conservation applications from global, national and local perspectives. We used 15,565 ground control points to assess the accuracy of products available globally (i.e., GlobCover, Holdridge’s life zone map and potential natural vegetation (PNV) maps). Hence we recommend that the map prepared herein be used widely. This vegetation type map is the most comprehensive one developed for India so far. It was prepared using 23.5 m seasonal satellite remote sensing data, field samples and information relating to the biogeography, climate and soil. The digital map is now available through a web portal (http://bis.iirs.gov.in)