Results 91 to 100 of about 6,941 (192)
Shuitu Baochi Xuebao, 2019 在自然降水条件下，定量研究黔西北喀斯特石漠化区典型乡土植物刺梨在坡耕地产流产沙的变化规律，分析该植物篱控制侵蚀产沙的水动力学机理。结果表明，刺梨植物篱截流、分流作用延缓径流产生及汇流时间，增加喀斯特坡面径流入渗量，减小坡面侵蚀动力。在不同降雨强度条件下，喀斯特坡面入渗率与径流量和产沙量呈负线性相关。植物根系缠绕串连黏结根土，改变土壤的入渗特性，增强土壤抗冲性与抗蚀能力。根系密度随土层深度增加而减少，减沙效应亦变小 ...
王恒松, 张芳美
doaj
, 2004 20 0 1年 12月 ,在广东省韶关市凡口铅锌矿湿地处理系统中采集土壤样品 ,采用Singh和Stout的培养法对土样中的原生动物进行定性、定量研究。共发现原生动物 4 2种 ,对照区和湿地每克风干土壤中原生动物的平均丰度分别为 2 377和 113,三大类土壤原生动物丰度中鞭毛虫占优势 ,多于纤毛虫和肉足虫。通过原生动物种类、丰度与土壤理化参数的统计分析说明铅锌尾矿对土壤原生动物群落的危害极大。通过土壤原生动物丰度和物种相似性聚类分析结果反映出正在使用的湿地 3土壤受污染严重 ,已停止使用的湿地 ...
冯伟松,杨军,叶志鸿,缪炜,余育和,黄铭洪,沈韫芬
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Loss of E3 ligase HvST1 function substantially increases distal crossover frequency
New Phytologist, Volume 249, Issue 3, Page 1325-1341, February 2026.Summary This study characterizes the function of a grass‐specific E3 ubiquitin ligase, HvST1, in regulating synapsis and crossover (CO) formation during meiosis in barley (Hordeum vulgare). In large‐genome cereals, COs are predominantly restricted to distal chromosomal regions, limiting genetic recombination and breeding flexibility.
Jamie Neil Orr +8 more
wiley +1 more source
Shuitu Baochi Xuebao, 2017 通过设置盆栽试验，研究丁香、红瑞木、油松和白蜡4种植物在6个有机碳菌剂施用水平下的生物量、肥料利用率及根系形态的变化，以此揭示有机碳菌剂对生物量和根系形态的影响，并确定干旱区造林最佳的肥料施用量。结果表明：在试验施用范围内，4种植物根系和总生物量在不同肥料水平下存在显著差异，与对照相比，4种植物总生物量增幅分别为22.41%～82.94%，42.22%～112.96%，10.60%～55.59%和9.46%～42.61%，最大值分别在T4（20 g/株）、T3（15 g/株）、T5（30 g/株）和T5（
陈 串 +4 more
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, 1997 This series is a supplement to our recent publication entitled "Underground Organs of Herbaceous Angiosperms" (1995) to be continued from Annual Repot of Botanic Garden, Faculty of Science, Kanazawa University No. 22, 1-10(1999). The present paper aims
梅林 正芳, 清水 建美
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Effect of AMF inoculation on root distribution and water use efficiency of Amorpha fruticosa L in western coal mining area [PDF]
Coal mining in arid and semi-arid areas has led to the emergence of large areas of coal mining subsiding areas. The ecological reclamation of mining areas is hard, and the mycorrhizal microbial technology for ecological restoration has become a current ...
Chao WU +4 more
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New Phytologist, Volume 249, Issue 3, Page 1268-1282, February 2026.Summary Exogenously applied auxins are essential for establishing cell lines in tissue cultures and maintaining their proliferation. Cell lines may develop the ability to proliferate even in media lacking auxin, they may become auxin‐habituated. This study investigated the mechanisms underlying this process.
Pavel Jelínek +11 more
wiley +1 more source
Shuitu Baochi Xuebao, 2011 研究不同水肥条件对夏玉米养分吸收及根系活性的影响,解释水肥配合下夏玉米养分吸收规律和根系活跃吸收面积的变化特征.采用管栽试验,研究不同水肥条件对夏玉米不同生育期养分积累特征和根系吸收面积的影响.夏玉米干物质积累量与植株全量N、K的积累量变化趋势基本一致,植株内全量N、K积累量以拔节-大喇叭口阶段最多,P素积累主要集中于抽雄-成熟阶段.不同生育期根系活跃吸收面积与总吸收面积变化均呈单峰式曲线,峰值分别出现在大喇叭口期和抽雄期.在玉米生长季水肥充足条件下 ...
李秀芳, 李淑文, 和亮, 文宏达
doaj
Anatomical Responses, Cadmium Accumulation and Distribution in Aegiceras corniculatum (L.) Seedlings under Cd Stress [PDF]
, 2012 已有的研究表明，植物的根叶结构在调控重金属的吸收、运输和转运上起着重要的作用；同时，进入植物体内的重金属通过与特定的细胞组分结合，可以改变重金属的细胞毒性。有鉴于此，本研究以红树植物桐花树为试验材料，通过光学显微镜、扫描电子显微镜（SEM-EDX）技术，研究了不同Cd浓度处理下（0，0.5，2.5，5mgL-1），桐花树解剖结构对Cd胁迫的响应变化；采用渗透离心法分离亚细胞组分，分析了不同Cd浓度处理下，Cd在桐花树中的亚细胞分布特征 ...
刘涛
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Community‐driven variations in snow algae color modulate snow albedo reduction
New Phytologist, Volume 249, Issue 4, Page 1739-1752, February 2026.Summary Snow algae blooms visibly alter snow color and surface energy balance, yet the biological basis of this variability remains unclear. We investigated how pigment composition and community structure shape the optical properties of snow algae blooms of distinct colors – red, orange, and green – co‐occurring within the same snowfield in Glacier ...
Pablo Almela +4 more
wiley +1 more source