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41.
Tao Xu Nengfei Bian Mingxing Wen Jin Xiao Chunxia Yuan Aizhong Cao Shouzhong Zhang Xiue Wang Haiyan Wang 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》2017,130(3):483-494
Key message
A novel high-tillering dwarf mutant in common wheat Wangshuibai was characterized and mapped to facilitate breeding for plant height and tiller and the future cloning of the causal gene.Abstract
Tiller number and plant height are two major agronomic traits in cereal crops affecting plant architecture and grain yield. NAUH167, a mutant of common wheat landrace Wangshuibai induced by ethylmethyl sulfide (EMS) treatment, exhibits higher tiller number and reduced plant height. Microscope observation showed that the dwarf phenotype was attributed to the decrease in the number of cells and their length. The same as the wild type, the mutant was sensitive to exogenous gibberellins. Genetic analysis showed that the high-tillering number and dwarf phenotype were related and controlled by a partial recessive gene. Using a RIL2:6 population derived from the cross NAUH167/Sumai3, a molecular marker-based genetic map was constructed. The map consisted of 283 loci, spanning a total length of 1007.98 cM with an average markers interval of 3.56 cM. By composite interval mapping, a stable major QTL designated QHt.nau-2D controlling both traits, was mapped to the short arm of chromosome 2D flanked by markers Xcfd11 and Xgpw361. To further map the QHt.nau-2D loci, another population consisted of 180 F2 progeny from a cross 2011I-78/NAUH167 was constructed. Finally, QHt.nau-2D was located within a genetic region of 0.8 cM between markers QHT239 and QHT187 covering a predicted physical distance of 6.77 Mb. This research laid the foundation for map-based cloning of QHt.nau-2D and would facilitate the characterization of plant height and tiller number in wheat.42.
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44.
Construction of a cucumber genetic linkage map with SRAP markers and location of the genes for lateral branch traits 总被引:7,自引:0,他引:7
WANG Gang * PAN Junsong * LI Xiaozun HE Huanle WU Aizhong & CAI Run Agriculture Biology School of Shanghai Jiaotong University Shanghai China 《中国科学:生命科学英文版》2005,48(3):213-220
Cucumber (Cucumis sativus L. 2n = 2x = 14), thatbelongs to Cucurbitaceae family, is one of majorvegetables with a planting area second to that of to-mato in the world[1]. Due to its economical importanceplant breeders and geneticists have paid much atten-tion to the genetic study on this important vegetablecrop, but the research progress in cucumber is muchless than that in tomato. In 1990, Pierce[2] reviewed allthe reported genes of cucumber that had been geneti-cally analyzed since the 1930… 相似文献
45.
Characterization of microRNAs in serum: a novel class of biomarkers for diagnosis of cancer and other diseases 总被引:1,自引:0,他引:1
46.
Ayman Al Haj Zen Antoine Lafont Eric Durand Camille Brasselet Patricia Lemarchand Gaston Godeau Bruno Gogly 《Matrix biology》2003,22(3):251-258
Decorin is a small leucine-rich proteoglycan that plays a role in control of cell proliferation, cell migration, collagen fibrillogenesis and modulation of the activity of TGF-beta. In the present study, we investigated the effects of decorin on the production of metalloproteinases (MMP-1, -2, -3, -9 and -13), tissue inhibitors of metalloproteinases (TIMP-1, -2) and cytokines (TGF-beta, IL-1beta, IL-4 and TNF-alpha). Decorin was overexpressed in cultured human gingival fibroblasts using adenovirus-mediated gene transfer. Decorin infection resulted in decreased protein levels of MMP-1 and MMP-3 whereas MMP-2 and TIMP-2 secretion was increased. MMP-9, MMP-13 and TIMP-1 were not affected by decorin infection. Cytokine measurements by ELISA showed that decorin overexpression reduced TGF-beta and IL-1beta. In contrast, IL-4 and TNF-alpha levels were markedly increased in decorin-infected cells. These results suggest that decorin could modulate the expression of certain metalloproteinases and their inhibitors, as well as the production of cytokines. Altogether, our data suggest that decorin might play a pivotal role in tissue remodeling by acting on the balance between extracellular matrix synthesis and degradation. 相似文献
47.
Seasonal variation of mixing depth and its influence on phytoplankton dynamics in the Zeya reservoir, China 总被引:2,自引:0,他引:2
Xuechu Chen Xiaodong Wang Deyi Wu Shengbing He Hainan Kong Zen’ichiro Kawabata 《Limnology》2009,10(3):159-165
In reservoirs or lakes, mixing depth affects growth and loss rates of phytoplankton populations. Based on 1-year data from
the Zeya reservoir, China, we scaled the mixing depth throughout a whole year by utilizing cluster analysis, and then investigated
its influence on phytoplankton dynamics and other physical and chemical parameters. Over the whole year, all physical and
chemical parameters except TN and temperature had significant correlations with mixing depth, indicating that mixing depth
is one of the important driving factors influencing water environment. According to mixing depth, a year can be divided into
three different periods, including the thermally stratified period, isothermally mixed period, and transition period between
them. When considering the former two different periods separately, mixing depth had no correlation with the phytoplankton
biovolume. However, over the whole year a significant correlation was observed, which indicated that the influence of mixing
depth on phytoplankton growth in the Zeya reservoir still followed Diehl’s theory. Furthermore, according to the steady-state
assumption, a unimodal curve (mixing depth—phytoplankton biovolume) with a significant peak appearing at a mixing depth of
2 m was observed, closely agreeing with Diehl’ prediction. 相似文献
48.
Identification and characterization of novel amphioxus microRNAs by Solexa sequencing 总被引:1,自引:0,他引:1
49.
Increased understanding of the species–area relationship (SAR) can improve its usefulness as a tool for prediction of species loss for biodiversity conservation targets. This study was conducted: (i) to determine the best plant attribute for the SAR in the community of arthropods living within the grass Muhlenbergia robusta; (ii) to determine the contribution of phenophases of plant foliage (dry and fresh), shade and conspecific distance to the variation in arthropod richness within the plant; (iii) to determine the best functional model of changes in the abundance, diversity and biomass in communities of arthropods in response to increases in plant size; (iv) to determine the best host‐plant attribute for prediction of these community attributes; and (v) to determine the effect of the plant phenophase, shade and M. robusta isolation on the abundance, diversity and biomass of the arthropod community. The above‐ground dry weight of grass was found to be the best host‐plant attribute for the SAR, while the light environment explained the arthropod richness within the grass, with higher richness observed in shaded environments. This study also showed that the best functional mathematical models for estimation of changes in the abundance, dry weight and diversity of arthropods in response to increases in grass size (dry weight) are the power model, exponential model and logarithmic model, respectively. Furthermore, the host‐plant foliage phenophase, shade and the isolation of M. robusta with other conspecifics had no effect on the abundance, biomass or diversity per basal area of the grass. 相似文献
50.