全文获取类型
收费全文 | 20642篇 |
免费 | 1876篇 |
国内免费 | 2818篇 |
出版年
2024年 | 82篇 |
2023年 | 349篇 |
2022年 | 896篇 |
2021年 | 1242篇 |
2020年 | 925篇 |
2019年 | 1062篇 |
2018年 | 1009篇 |
2017年 | 703篇 |
2016年 | 926篇 |
2015年 | 1458篇 |
2014年 | 1622篇 |
2013年 | 1697篇 |
2012年 | 2073篇 |
2011年 | 1865篇 |
2010年 | 1042篇 |
2009年 | 1048篇 |
2008年 | 1146篇 |
2007年 | 977篇 |
2006年 | 904篇 |
2005年 | 730篇 |
2004年 | 567篇 |
2003年 | 449篇 |
2002年 | 377篇 |
2001年 | 256篇 |
2000年 | 235篇 |
1999年 | 265篇 |
1998年 | 168篇 |
1997年 | 168篇 |
1996年 | 130篇 |
1995年 | 114篇 |
1994年 | 102篇 |
1993年 | 82篇 |
1992年 | 114篇 |
1991年 | 90篇 |
1990年 | 81篇 |
1989年 | 61篇 |
1988年 | 51篇 |
1987年 | 47篇 |
1986年 | 49篇 |
1985年 | 43篇 |
1984年 | 22篇 |
1983年 | 21篇 |
1982年 | 15篇 |
1981年 | 7篇 |
1980年 | 6篇 |
1978年 | 8篇 |
1977年 | 5篇 |
1973年 | 5篇 |
1971年 | 6篇 |
1970年 | 6篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
Qiang Xiaojing Ding Junjun Lin Wei Li Qiaozhen Xu Chunying Zheng Qian Li Yuzhong 《Plant and Soil》2019,439(1-2):373-391
Plant and Soil - Endophytic fungi colonization is an eco-friendly strategy to respond to environmental stresses and confer tolerance to the host plant. Here, the responses of wheat plant inoculated... 相似文献
992.
Lin Dunmei Pang Mei Fanin Nicolas Wang Hongjuan Qian Shenhua Zhao Liang Yang Yongchuan Mi Xiangcheng Ma Keping 《Plant and Soil》2019,434(1-2):467-480
Plant and Soil - Home-field advantage (HFA) hypothesis predicts that plant litter decomposes faster beneath the plant species from which it was derived than beneath other plant species. However, it... 相似文献
993.
Plant and Soil - Cadmium (Cd) is the most widespread toxic heavy metal to plant growth. As the second leading oil crop, some genotypes of Brassica napus (B. napus) are potential Cd accumulators.... 相似文献
994.
Xiaoqin Zhang Tao Tong Bin Tian Yunxia Fang Jiangjie Pan Junjun Zheng Dawei Xue 《Phyton》2019,88(3):253-260
Barley (Hordeum vulgare L.) is one of the most Aluminum (Al) sensitive cereal species. In this study, the physiological, biochemical, and molecular response of barley seedlings to Al treatment was examined to gain insight into Al response and tolerance mechanisms. The results showed that superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) activity were inhibited to different degrees following Al exposure. The MDA content also significantly increased with increasing Al concentrations. SRAP results indicated significant differences between Al treatments and controls in terms of SRAP profile, and the genomic template stability (GTS) decreased with increasing Al concentration and duration. These integrative results help to elucidate the underlying mechanisms that the barley response to Al toxicity. 相似文献
995.
The auxin influx carrier,OsAUX3, regulates rice root development and responses to aluminium stress 总被引:1,自引:0,他引:1
Mei Wang JiYue Qiao ChenLiang Yu Hao Chen ChenDong Sun LinZhou Huang ChuanYou Li Markus Geisler Qian Qian De An Jiang YanHua Qi 《Plant, cell & environment》2019,42(4):1125-1138
In rice, there are five members of the auxin carrier AUXIN1/LIKE AUX1 family; however, the biological functions of the other four members besides OsAUX1 remain unknown. Here, by using CRISPR/Cas9, we constructed two independent OsAUX3 knock‐down lines, osaux3‐1 and osaux3‐2, in wild‐type rice, Hwayoung (WT/HY) and Dongjin (WT/DJ). osaux3‐1 and osaux3‐2 have shorter primary roots (PRs), decreased lateral root (LR) density, and longer root hairs (RHs) compared with their WT. OsAUX3 expression in PRs, LRs, and RHs further supports that OsAUX3 plays a critical role in the regulation of root development. OsAUX3 locates at the plasma membrane and functions as an auxin influx carrier affecting acropetal auxin transport. OsAUX3 is up‐regulated in the root apex under aluminium (Al) stress, and osaux3‐2 is insensitive to Al treatments. Furthermore, 1‐naphthylacetic acid accented the sensitivity of WT/DJ and osaux3‐2 to respond to Al stress. Auxin concentrations, Al contents, and Al‐induced reactive oxygen species‐mediated damage in osaux3‐2 under Al stress are lower than in WT, indicating that OsAUX3 is involved in Al‐induced inhibition of root growth. This study uncovers a novel pathway alleviating Al‐induced oxidative damage by inhibition of acropetal auxin transport and provides a new option for engineering Al‐tolerant rice species. 相似文献
996.
997.
Zhang Hui Zhang Lu Han Junyou Qian Zhiyuan Zhou Bingying Xu Yunmin Wu Gang 《Plant molecular biology》2019,100(6):571-578
Plant Molecular Biology - A mutation in the nuclear localization signal of squamosa promoter binding like-protein 9 (SPL9) delays vegetative phase change by disrupting its nuclear localization. The... 相似文献
998.
Liu Shuai Li Su Fan Xiao-Yang Yuan Guo-Di Hu Tao Shi Xian-Meng Huang Jun-Biao Pu Xiao-Yan Wu Chuan-Sheng 《Photosynthesis research》2019,141(2):245-257
Photosynthesis Research - Chlorophyll content in lichens is routinely used as an accurate indicator of lichen vigor, interspecific differences, and the effect of site-related environmental... 相似文献
999.
Liu Siqi Wang Bo Li Xiaojing Pan Jingxian Qian Xuexue Yu Yahui Xu Ping Zhu Jian Xu Xiaofeng 《Plant Cell, Tissue and Organ Culture》2019,137(3):485-494
Plant Cell, Tissue and Organ Culture (PCTOC) - Callus is a remarkable regeneration tissue. The genes correlated with root development can be involved in regulating callus development in higher... 相似文献
1000.