Testing for Tolerance to Aphids in Indian Mustard, Brassica juncea (L.) Czern and Coss.     

V. Abraham  C. R. Bhatia 《Plant Breeding》1994,112(3):260-263

Brassica juncea plants were screened for aphid tolerance using three methods. Seven and 14 days old seedlings grown in wooden trays in a glasshouse were kept between infector trays with heavy aphid infestation. There were no surviving plants in the susceptible genotypes 50 days after sowing but survival rates ranging between 80 and 90 % were observed for selection 44. The progenies of the surviving plants were tested under natural infestation in the field. Plants were scored for leaves without aphids 40 days after sowing, healthy plants at harvest and seed yield in g/m² For most of these lines, the aphids’ survival, life span and fecundity (nymphs produced per adult) were recorded after introducing five newly-born nymphs on excised fifth leaves cultured in petri dishes. Selections showing greater tolerance to aphids than the check cultivars were identified in the progenies of a cross RLM-514 × T-6342. It was concluded that the excised leaf method can provide a reliable measure of the lines’ reaction to aphids.  相似文献   

Antioxidant flavonoid glycosides from Evolvulus alsinoides     

Manmeet Kumar  Ausaf Ahmad  Preeti Rawat  Mohammad Faheem Khan  Naila Rasheed  Prasoon Gupta  B. Sathiamoorthy  Gitika Bhatia  Gautam Palit  Rakesh Maurya 《Fitoterapia》2010

Oxidative damage is an established outcome of chronic stress. Thus, the present study was designed to investigate the modulatory role of ethanolic extract of Evolvulus alsinoides (EA) in terms of oxidative alterations at peripheral and central level in rats subjected to chronic unpredictable stress (CUS). CUS exposure for 7 days reduced Cu, Zn superoxide dismutase and catalase activity with increase in glutathione peroxidase activity and lipid peroxidation, while decrease in reduced glutathione level in blood plasma, frontal cortex and hippocampus regions of brain. Oral administration of EA extract at 200 mg/kg p.o. normalized these stress induced oxidative alterations with an efficacy similar to that of melatonin. Further, EA extract was taken up for detailed chemical investigation. Two new flavonol-4′-glycoside, kaempferol 4′-O-β-d-glucopyranosyl-(1 → 2)-β-d-glucopyranoside (3) and kaempferol 4′-O-α-l-rhamnopyranosyl-(1 → 6)-β-d-glucopyranoside (5) were isolated, along with eight known compounds (1, 2, 4 and 6–10). The structures of new compounds were established by detailed spectroscopic studies, while known compounds were characterized by direct comparison of their reported NMR data. All these compounds were evaluated for their in vitro antioxidant activity. Compounds 3, 5, 9 and 10 at 100 and 200 μg/ml showed significant in vitro antioxidant activity. Therefore, EA may hold great potential in preventing clinical deterioration in stress induced oxidative load and related disorders.  相似文献   

Phenotypic identification of farm animal genetic resources using computer learning with scoring function     

Avnish K. Bhatia  Anand Jain  S.B. Gokhale 《Computers and Electronics in Agriculture》2010,73(1):37-43

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Effect of Water Stress on the Photosynthesis, Productivity and Water Status of Mung Bean (Vigna radiata L. Wilczek)     

D. C. Uprety  Anju  Bhatia 《Journal of Agronomy and Crop Science》1989,163(2):115-123

The effect of water stress and its subsequent recovery on the photosynthesis, productivity and water status, was examined in three mungbean varieties ( Vigna radiata L. Wilczek) i.e. PS 16, P 105 and Pusa Baisakhi. The variety P 105 was found relatively less susceptible to water stress compared to high susceptibility in Pusa Baisakhi and PS 16. The adverse effect of stress was comparatively higher at the post-flowering and pod development stages. It was observed that variety P 105 had inherently maintained higher water status by retaining higher water potential and water content under water stress condition, thereby effectively reducing the water loss. The higher transpiration rate in this variety regulates the flow of water within the plant. This type of regulation of water flow and maintenance of high water status in P 105 helped to resist the adverse effect of water stress on photosynthesis and productivity. Such adaptation mechanism was not observed in varieties PS 16 and Pusa Baisakhi. The recover) mechanism was, however, operated efficiently in susceptible varieties PS 16 and Pusa Baisakhi particularly for recouping the vegetative growth, but its effect could not be retained for reproductive characters, wherein also variety P 105 due to its efficient partitioning system yielded better than other cultivars.  相似文献   

Effect of temperature on the infectivity of Sarcocystis miescheriana cysts in pork     

A Saleque  P D Juyal  B B Bhatia 《Veterinary parasitology》1990,36(3-4):343-346

Sarcocysts of Sarcocystis miescheriana in the thigh muscles of pigs became non-infective to pups after heating infected pork in minute pieces at 60 degrees C for 20 min, 70 degrees C for 15 min and 100 degrees C for 5 min. Similar pieces of infected muscle tissues, when exposed to -4 degrees C for 2 days or -20 degrees C for 1 day, became non-infective to pups. The experiment suggests that pork containing sarcocysts of S. miescheriana, and possibly of S. suihominis, requires cooking at a minimum of 70 degrees C for 15 min or freezing at -4 degrees C for 2 days or -20 degrees C for 1 day for making it safe for consumption.  相似文献   

Sex chromatin as a useful tool for detection of freemartinism in bovine twins     

S Bhatia  V Shanker 《The British veterinary journal》1985,141(1):42-48

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Significance of the asexual stages in assessing eimerian infections of goats     

B B Bhatia  B P Pande 《The Indian veterinary journal》1969,46(5):399-403

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Polymer replicas of photonic porous silicon for sensing and drug delivery applications     

Li YY  Cunin F  Link JR  Gao T  Betts RE  Reiver SH  Chin V  Bhatia SN  Sailor MJ 《Science (New York, N.Y.)》2003,299(5615):2045-2047

Elaborate one-dimensional photonic crystals are constructed from a variety of organic and biopolymers, which can be dissolved or melted, by templating the solution-cast or injection-molded materials in porous silicon or porous silicon dioxide multilayer (rugate dielectric mirror) structures. After the removal of the template by chemical dissolution, the polymer castings replicate the photonic features and the nanostructure of the master. We demonstrate that these castings can be used as vapor sensors, as deformable and tunable optical filters, and as self-reporting, bioresorbable materials.  相似文献   

Influence of rice varieties,nitrogen management and planting methods on methane emission and water productivity     

S. K. Sharma  Y. V. Singh  Suruchi Tyagi  Arti Bhatia 《Paddy and Water Environment》2016,14(2):325-333

A field experiment was conducted during rainy seasons of 2009 and 2010 at New Delhi, India to study the influence of varieties and integrated nitrogen management (INM) on methane (CH₄) emission and water productivity under flooded transplanted (FT) and aerobic rice (AR) cultivation. The treatments included two rice (‘PB 1’ and ‘PB 1121’) varieties and eight INM practices including N control, recommended dose of N through urea, different combinations of urea with farmyard manure (FYM), green manure (GM), biofertilizer (BF) and vermicompost (VC). The results showed 91.6–92.5 % lower cumulative CH₄ emission in AR compared to FT rice. In aerobic conditions, highest cumulative CH₄ emission (6.9–7.0 kg ha^?1) was recorded with the application of 100 % N by organic sources (FYM+GM+BF+VC). Global warming potential (GWP) was significantly lower in aerobic rice (105.0–107.5 kg CO₂ ha^?1) compared to FT rice (1242.5–1447.5 kg CO₂ ha^?1). Significantly higher amount of water was used in FT rice than aerobic rice by both the rice varieties, and a water saving between 59.5 and 63 % were recorded. Under aerobic conditions, both rice varieties had a water productivity of 8.50–14.69 kg ha^?1, whereas in FT rice, it was 3.81–6.00 kg ha^?1. In FT rice, a quantity of 1529.2–1725.2 mm water and in aerobic rice 929.2–1225.2 mm water was used to produce one kg rice. Thus, there was a saving of 28.4–39.6 % total water in both the rice varieties under AR cultivation.  相似文献   

Abscisic acid inhibition of arachidonic acid-mediated rishitin synthesis in potato tuber discs     

Dianne Shea  Robert D. Allen  Satish K. Bhatia  David A. Stelzig 《American Journal of Potato Research》1987,64(2):49-56

The ability of abscisic acid (ABA) to inhibit synthesis of the phytoalexin, rishitin, in aging arachidonic acid-treated potato tuber discs was studied in a time-restricted manner. The extent of inhibition was decreased to near zero when the ABA was applied up to 24 h after cutting the discs, regardless of whether the arachidonic acid treatment was at 0 or 24 h after cutting. Application of ABA to potato discs more than 24 h after cutting the discs caused high levels of inhibition in discs treated with arachidonic acid at 24 h, but not in discs treated with arachidonic acid at 0 h. Apparently ABA interferes with at least two separate aging events that are required for phytoalexin synthesis. One event is initiated by cutting the potato tissue, and the other by the arachidonic acid treatment.  相似文献