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31.
Bhawna Saxena Rajinder Kaur Satya Vrat Bhardwaj 《Journal of Crop Science and Biotechnology》2011,14(3):191-196
Genetic relationship and diversity among seven cabbage cultivars were analyzed using RAPD and SSR markers. These cultivars
are of great commercial value in India and are confirmed for their reaction to black rot caused by Xanthomonas campestris pv. campestris. However, so far the extent of genetic diversity and relatedness has not been studied in these cultivars. A total of 17 selected
RAPD primers generated 90 bands, 76 of which were polymorphic (84.44%). In addition, 27 selected SSR primers generated 67
amplified bands with 59 of which were polymorphic (87.6%). Though both the marker techniques were able to discriminate the
cultivars effectively, analysis of combined data of markers (RAPD and SSR) resulted in better distinction of cultivars. By
combining both the markers, a total of 157 bands were detected of which 135 bands (85.98%) were polymorphic, i.e. an average
of 5.95 bands per primer. High level of polymorphism (> 85%) recorded with two different marker systems indicated a high level
of genetic variation existing among the cultivars. Genetic relationship estimated using similarity co-efficient (Jaccard’s)
values between different pairs of cultivars varied from 0.21 to 0.77 in RAPD, 0.42 to 0.82 in SSR, and 0.43 to 0.89 with combined
markers. A high correspondence had been recorded between the values of genetic variations generated by UPGMA, clustering,
and scatter plot diagrams. The cultivars ‘January King Sel. Improved’ and ‘Golden Acre’ are highly divergent cultivars as
demonstrated by both the marker systems. 相似文献
32.
The present study investigates the performance of mango seedlings screened with indigenous arbuscular mycorrhizal (AM) fungi and Azotobacter chroococcum strains under solarized, chemical sterilized and natural soil conditions. Two isolates each of AM fungi namely, Glomus fasciculatum (Thaxter sensu Gerdemann) and Glomus mosseae (Nicol. & Gerd.), and two strains of A. chroococcum viz., A. chroococcum strain-I (AZ1) and A. chroococcum strain-II (AZ2) were inoculated at nursery stage under four different moisture conservation practices viz., black polyethylene mulch and organic mulches (grass mulch, cover crops, green manure) and clean cultivation. The observations on microbial population, root colonization, growth parameters and leaf nutrient content of the seedlings were recorded. Mango seedling's inoculated with G. fasciculatum and AZ1 had increased seedling's height, diameter, leaf area and total root length, microbial consortium of the rhizosphere soil and leaf N, P, K and Zn content in plots where solarization and black polyethylene mulching was used. The study revealed that the inoculation of mango stones and the saplings with G. fasciculatum and AZ1 under solarized black polyethylene mulched practice may be considered the best practice for raising mango nursery and maintaining soil health under rain-fed conditions of mid-hills of north-west Himalayas. 相似文献
33.
Kumar Raj Bhardwaj A. K. Rao B. K. Vishwakarma A. K. Kakade Vijaysinha Dinesh D. Singh Gaurav Kumar Gopal Pande V. C. Bhatnagar P. R. Bagdi G. L. 《Journal of Soils and Sediments》2021,21(2):1232-1242
Journal of Soils and Sediments - Soil erosion and loss threatens vast tracts of agricultural and non-agricultural land, worldwide. High soil erosion severely affects establishment of vegetation via... 相似文献
34.
Adhikari Sneha Kumari Jyoti Jacob Sherry Rachel Prasad Pramod Gangwar O. P. Lata Charu Thakur Rajnikant Singh Amit Kumar Bansal Ruchi Kumar Sundeep Bhardwaj S. C. Kumar Subodh 《Genetic Resources and Crop Evolution》2022,69(2):499-523
Genetic Resources and Crop Evolution - Agricultural production is facing serious threat from various biotic and abiotic stresses specifically under climatic challenges. It is becoming increasingly... 相似文献
35.
36.
The efficiency of microwave treatment in breaking the hard seed coat dormancy in Stylosanthes seabrana was compared with three other conventional methods including mechanical scarification, hot water treatment (100°C for 1 min) and acid scarification (5 min). The microwave treatment was as efficient in breaking hard seed coat dormancy as the hot water treatment. The ranking of treatments followed the order microwave ≥ hot water ≥ acid > mechanical scarification > control. The electrical conductivity of microwave‐treated seeds, although less than that of hot water, was greater than untreated control seeds, indicating increased permeability of the seed coat for water uptake. Seedling vigour, based on seedling length, was also similar for these treatments. Respiration was found to be higher in microwave‐treated seeds. Although levels of food reserves were not measured, future studies could hypothesize that increased imbibition of water in microwave‐treated seeds could cause a faster breakdown of food‐reserve material that is supplied to the germinating seed, resulting in increased evolution of CO2 through respiration. Scanning electron micrographs indicated the appearance of cracks and blisters on the seed surface of microwave‐treated seeds. These are most likely the sites of water entry during imbibition. 相似文献
37.
38.
The study was conducted on 18 lactating Murrah buffaloes in 83.72 ± 14.75 days after calving. Group I buffaloes were not injected
with oxytocin and served as control. Buffaloes of Group II were injected with oxytocin @ 2.5 IU per 0.5 ml intramuscularly
at the hip region for a period of 1 month while Group III buffaloes received injection of oxytocin @ 5.0 IU per ml intramuscularly
at the hip region for a period of 1 month. Milk samples from three groups of buffaloes were collected after oxytocin injections
at 15 days interval on 0, 15, 30 and 45 days. Blood samples were collected in heparinized tubes at 0, 15, 30 and 45 days of
experiment from all three groups of buffaloes. There was no significant change in cisternal, alveolar and total milk yield
by exogenous oxytocin administration. Fat % in cisternal, alveolar and total milk decreased significantly (P < 0.01) by 11.8%
and 21.3% in groups II and III buffaloes, respectively. Protein % increased significantly (P < 0.01) in group III. A significant
increase was observed in somatic cell counts of milk by 5.36% and 6.22% in groups II and III, respectively as compared to
control group.
Part of MV. Sc. Thesis of the first author submitted to National Dairy Research Institute (Deemed University) 相似文献
39.
Anjali Bhatt 《International Journal of Fruit Science》2016,16(1):57-68
Mango is distinctive among all fruits considering its exceptional flavors. All varieties of mango have their unique essence. It is one of the largest consumed fruits worldwide. Its antioxidant properties are also well known due to the presence of carotenoids and phenolic compounds. Unlike other studies, this study considers that the methanolic extraction may not well reflect the antioxidant activity of mango after consumption, i.e., in vivo. Thus, an in vitro gastrointestinal model has been used for the simulation of digestion of pre-ripe and ripe mango samples. Both samples thus extracted are compared with their conventional methanolic extracts for their antioxidant compounds and antioxidant activity. Interesting differences in the two types of extracts can be observed. The simulated gastrointestinal extracts show significantly higher antioxidant properties in parameters, such as total phenol content, flavonoid content, flavonol content, carotenoid content, reducing power, and radical scavenging activity. From the results, it can be concluded that the conventional extracts under rate the antioxidant value of mangoes and they may have much higher health significance than they are believed to have. 相似文献
40.
In order to develop composites with better mechanical properties and environmental performance, it becomes necessary to increase
the hydrophobicity of the natural fibers and to improve the interface between matrix and natural fibers. Graft copolymerization
of natural fibers is one of the best methods to attain these improvements. Only few workers have reported the use of graft
copolymers as reinforcing material in the preparation of composites. So in the present paper, we report the preparation of
graft copolymers of flax fibers with methyl acrylate (MA) using Fenton’s reagent (FAS-H2O2) as redox system. Synthesized flax-g-poly(MA) was characterized with FTIR, TGA/DTA, scanning electron microscopy (SEM), and
X-ray diffraction (XRD) techniques. Composites were prepared using flax-g-poly(MA) as a reinforcement and phenolformaldehyde
(PF) as the binding material. Mechanical properties of phenol-formaldehyde composites were compared and it has been found
that composites reinforced with flax-g-poly(MA) showed improvement in mechanical properties. Composites reinforced with flax-g-poly(MA)
showed better tensile strength (235 N) and compressive strength (814 N) in comparison to composites reinforced with original
flax fiber which showed lesser tensile strength (162 N) and compressive strength (372 N). Composites reinforced with flax-g-poly(MA)
shows the improved MOR, MOE, and SP. 相似文献