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71.
K. Joseph John R. Khedasana V. A. Muhammed Nissar Sheen Scariah Shrikant Sutar S. R. Rao M. Abdul Nizar M. Latha S. R. Yadav K. V. Bhat 《Genetic Resources and Crop Evolution》2014,61(2):345-355
Cucumis setosus Cogn. is a rare, endemic, wild gathered or semi-domesticated vegetable restricted to Maharashtra state and border districts of adjoining states in India. Herbarium and literature survey shows that it is poorly collected and inadequately studied. Morphological characters, basic chromosome number and crossability barriers indicate that Cucumis setosus is a valid species, distinct from C. sativus and endemic to western India. Its morphology, basic cytology, crossability relationship with other Cucumis species, taxonomy, distribution, ecology, conservation, economic importance and viability under cultivation are discussed. Besides, a key to distinguish it from C. sativus var. hardwickii (wild and feral form of C. sativus) and other species having sympatric distribution in the area is also presented. Absence of bitter principle in the fruits makes it a potential germplasm for melon and cucumber improvement as well as direct domestication as a future crop. 相似文献
72.
Hosamani M Yadav S Kallesh DJ Mondal B Bhanuprakash V Singh RK 《Zoonoses and public health》2007,54(5):204-208
Isolation and characterization of an orf virus has been described here. The virus was isolated from an outbreak of 'scabby mouth' in goats in Northern India. Viral morphology from the scab biopsy revealed typical ovoid-shaped particles characteristic of Parapoxvirus. Virus was isolated from sonicated scab suspension and characterized by restriction enzyme (RE) analysis and sequencing of full-length GM-CSF- and interleukin-2 inhibitory factor (GIF) gene. RE pattern of the virus did not show close resemblance to most of the orf viruses published earlier. However, it showed high sequence identity and closer phylogenetic relationship with previously published ORFV-SA00 strain, as evident from the nucleotide and deduced amino acid sequence of GIF gene. 相似文献
73.
R. K. Kapila R. S. Yadav P. Plaha K. N. Rai O. P. Yadav C. T. Hash C. J. Howarth 《Plant Breeding》2008,127(1):33-37
Genetic diversity among 70 maintainers and two pollinators of sub-Saharan and Indian origin was studied for simple sequence repeat (SSR) loci using 34 primer pairs. A total of 213 alleles were detected with an average of 6.26 alleles per locus. Polymorphic information content (PIC) ranged from 0.05 to 0.96 with a mean of 0.58 for the SSR loci. Mean PIC across the linkage groups and number of alleles in dinucleotide motifs varied significantly. The lowest PIC (0.239) for linkage group 6 indicated comparatively conserved nature of this linkage group. Genetic similarity estimates ranged from 0.05 to 0.73 with an average value of 0.29. This indicated sufficient diversity among the maintainer and pollinator lines. The 72 lines fell in five clusters, and the clustering pattern corroborated with their pedigree and characteristic traits. Pollinator ICMR 356 was more diverse from the maintainer lines analysed, and can be a potential parent for pearl millet hybrid development. 相似文献
74.
Madhav P. Yadav Marshall L. Fishman Hoa K. Chau David B. Johnston Kevin B. Hicks 《Cereal Chemistry》2007,84(2):175-180
The molecular characteristics of two purified arabinoxylan fractions derived from corn kernels, corn fiber gum-1 and -2 (CFG-1 and -2), have been studied and correlated with emulsifying properties. CFG-1 and -2 fractions were isolated from different corn fiber sources by 1) a sequential alkaline extraction and H2O2 bleaching to produce CFG-1; and 2) additional H2O2 treatment of the alkali-extracted residue at pH 11.5, yielding CFG-2. Multiangle laser light-scattering and online viscosity were used to measure the molar mass, polydispersity, structure compactness, and intrinsic viscosity of the generated CFG fractions. Emulsification properties in an oil-in-water emulsion system with 10:1 oil-to-gum ratio was investigated by measuring turbidity of an aliquot from the bottom of the diluted emulsion over 10 days. The isolated CFG-2 from each fiber source was higher in weight-average molar mass (Mw) polydispersity) (Mw/Mn) and structure compactness, and also lower in solution weight-average intrinsic viscosity (ηw) than the corresponding CFG-1. Average Mw and ηw values were 244–491 kDa and 1.35–1.84 dL/g, respectively. The emulsion stabilizing capacity of CFG-2 from each fiber source was superior to the corresponding CFG-1. 相似文献
75.
This study quantified the magnitude of heterosis in pearl millet (Pennisetum glaucum) topcross hybrids produced by crossing 16 diverse landraces and three high yielding open-pollinating varieties on two homozygous
male-sterile lines. Hybrids and pollinators were grown in 12 year ×;location combinations in India that were grouped into
three zones. Genetic components of variance quantifying the differences among these hybrids were estimated. The hybrids showed
a conspicuous heterosis for grain yield, earliness and biomass yield but not for straw yield. The level and direction of heterosis
for time to flowering depended strongly on the earliness of the male-sterile line. In the terminal drought stress zone hybrids
made on the early maturing male-sterile line 843A had the highest level of heterosis for grain yield (88%). This was partly
due to escape from terminal stress. In the other two zones the heterosis for grain yield was on average 30%. Heterosis for
biomass yield and biomass yield per day was on average also positive in all three zones. For all traits, except time to flowering
and biomass yield per day, pollinator effects were the only significant source of variation. Differences between hybrids were
mostly caused by additive genetic effects. Significant amount of heterosis observed in landrace-based topcross hybrids for
grain yield and other productivity-related traits suggested that substantial improvement in pearl millet productivity in and
environments can be obtained by topcrossing locally adapted landraces on suitable male-sterile lines.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
76.
Modelling surplus canal water releases for artificial recharge of groundwater through surface drainage systems 总被引:1,自引:0,他引:1
Intensive agriculture in various countries has resulted in over-exploitation of groundwater resources leading to a decline
in the water table. Artificial groundwater recharge offers a good method of preventing the water table from declining further.
The Indo-Gangetic plain is currently facing the problem of a declining water table. The network of surface drains constructed
to control previous waterlogging could now be used for recharging groundwater with surplus canal water during the low irrigation
requirement period, as most of the drains cut across the irrigation canals. Therefore, a model was developed to determine
the optimum discharge to be released at the head of each drain under natural flow conditions and with interruption in the
flow by providing check structures across the drains at suitable intervals. In the proposed method, water is released in such
a way that outflow becomes zero at the outfall of the drain. The results obtained reveal that the strategy developed could
be adopted for recharging the declining water table through surface drainage systems.
Received: 3 February 1999 相似文献
77.
A water balance model applicable to intermittent irrigation practice in rice fields was developed. The model inputs consist
of climatic data and soil parameters. The model is formulated to simulate various processes such as evapotranspiration, deep
percolation, surface runoff and depth of irrigation water to be applied on a daily as well as a seasonal basis. It also simulates
daily ponding depth in the field. Both saturated and unsaturated water flow concepts were incorporated into the model to predict
deep percolation loss during wet and dry periods of the field. The model was validated using data collected from field experiments.
The details of model development and validation are outlined in this paper.
Received: 21 December 1999 相似文献
78.
Yadav Sudhir Mondal Manoranjan K. Shew Aaron Jagadish S. V. Krishna Khan Zahirul Haque Sutradhar Asish Bhandari Humnath Humphreys Elizabeth Bhattacharya Jayanta Parvin Rokhsana Rahman Mahabubur Chandna Parvesh 《Paddy and Water Environment》2020,18(2):331-343
Paddy and Water Environment - Most of the lands of the southern coastal zone of Bangladesh are protected from tidal flooding and storm surges by embankments constructed during the 1960s and 1970s,... 相似文献
79.
Shailendra Kumar Yadav U. U. Khokhar Som Dev Sharma Pramod Kumar 《Journal of plant nutrition》2016,39(2):194-203
The aim of this research was designed in order to optimize integrated plant nutrient supply (IPNS) through balanced fertilization of organic, inorganic and microbial inoculants in strawberry cv. Chandler. The potential efficiency of bio-organics used along with chemical fertilizers on cropping behaviour, physical-chemical and biological properties of rhizosphere soil, fruit yield, quality attributes and leaf nutrient content was investigated. The significant improvement in physico-chemical properties of the soil and nutrient uptake was recorded. The uninoculated control received farmyard manure (FYM) and inorganic nitrogen (N) recorded the highest cation exchange capacity (CEC) and soil organic carbon (OC) content. Highest available N and phosphorus (P) of soil were recorded in vermicompost and inorganic N applied in two and one split, respectively. The concentration of micronutrients cations viz., iron (Fe), zinc (Zn), manganese (Mn) in soil was higher in treatment received vermicompost and inorganic N in two splits. The integration of bio-organic nutrient supplements also significantly enriched the microbial status of the rhizosphere soil, leaf nutrient concentration and maintained soil health and productivity on long term basis for sustainable fruit production. 相似文献
80.
Roop Kishore Ashish Dwivedi Raghuvir Singh R. K. Naresh Vineet Kumar Priyanka Bankoti Dinesh Kumar Sharma Nishant Yadav 《Paddy and Water Environment》2017,15(1):49-58
Weeds caused serious problem on yield reduction of basmati rice worldwide. Losses caused by weeds varied from one country to another, depending on the presence of dominant weeds and the control methods practiced by farmers; therefore, suitable plant population and weed management practices should be adopted. Keeping these in mind, a field experiment was carried out during kharif seasons of 2009 and 2010 at crop Research Centre of SVPUA&T, Meerut, India comprising 4 planting geometries, viz. 20, 30, 40, and 50 hills m?2 as main plot factor, and 5 weed management practices (Butachlor @ 1.0 kg ha?1, Butachlor @ 1.0 kg ha?1 fb (followed by) one hand weeding, Butachlor @ 1.0 kg ha?1 fb Almix @ 4 g ha?1, two hand weedings and weedy check) in a split plot design with 3 replications. Experimental results revealed that plant population of 50 hills m?2 proved superior over that of 20 hills m?2 in respect of weed density, weed dry weight, number of tillers m?2, yield attributes, grain, straw, and biological yields. The maximum grain yield (29.00 and 31.00 q ha?1) and straw yield (51.30 and 52.50 q ha?1) were recorded in 50 hills m?2 followed by 40 hills m?2 during 2009 and 2010, respectively. In respect of nitrogen, phosphorus, and potassium removal, a reverse trend was observed: the highest in 20 hills m?2 followed by 30, 40, and 50 hills m?2. As far as the weed management practices are concerned, both chemical and mechanical methods of weed control were found superior over weedy check. The lowest weed density, dry weight, and highest weed control efficiency, maximum length of panicle?1, number of panicle (m2), and 1000-grain weight and grain yield of 30.40 and 32.60 q ha?1 were recorded with two hand weedings which was at par with Butachlor @ 1.0 kg ha?1 fb one hand weeding over rest of the weed management practices. 相似文献