Results 21 to 30 of about 2,096,028 (161)
野生动物学报, 1995 果子狸从出生到性成熟，个体生长发育可分为仔狸、幼狸、成狸三个不同时期。仔狸期即哺乳期。营养主要来自母乳。生理特点是体发育明显增长、器官功能日趋完善。断奶后，小兽则进入幼狸期，即育成期。营养完全依赖饲料供给。生理特点是长骨骼，长肌肉，增体重。二冬龄后，小兽开始进入成狸期。亦称种狸期。生理特点是体发育趋于停滞，性器官出现季节性周期性发育成熟，并有效地参与生殖活动，繁殖后代。
陈萍君 +3 more
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New Phytologist, Volume 251, Issue 3, Page 1267-1282, August 2026.Biosynthesis and accumulation of tanshinones in the periderm of Salvia miltiorrhiza during secondary root growth. Summary Perennial herbs develop long‐lived roots that undergo repeated cycles of secondary growth, during which the periderm functions as a protective barrier and a major site of specialized metabolite accumulation.
Licheng Liu +19 more
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野生动物学报, 2017 郑州市动物园饲养5只豹,2雄3雌。2014年3月27日,其中1只母豹进入生育期,且第一次怀孕,该怀孕母豹生下1只小豹。通过监控发现,母豹分娩后十分惊恐,叼着小豹四处躲藏,拒绝哺乳,于是将幼豹拿出,进行人工育幼。新出生的小豹发育正常,个体较小,体重约500 g。每天用刚挤出的新鲜山羊奶代替母乳进行人工育幼。经过60多天的人工哺育,小豹体重和体长增加明显,由初生时的450 g增加至1 900 g,体长(含尾长)由37 cm增长至62 cm。根据幼豹的生长发育特点及观察结果,总结出幼豹在不同发育时期对温度 ...
丁爱萍 李德中 袁 丽 刘智明
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Root hair plasticity in cereals under abiotic stress
New Phytologist, Volume 251, Issue 4, Page 1684-1693, August 2026.An integrative perspective on how to study the regulation of root hair plasticity to increase the resilience of cereals to abiotic stress. Summary Abiotic stress is a constant threat to crop growth and yield in the context of climate change. Root systems that can best adapt their architecture to environmental challenges contribute to enhanced ...
Yaping Zhou, Frank Hochholdinger
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Zhejiang Daxue xuebao. Lixue ban, 2019 采用解剖镜、扫描电镜技术，对长白山早春类短命植物牡丹草地下芽形态分化进行了观察，并采用游标卡尺测定各阶段芽体大小，研究地下芽的生长发育节律。发现牡丹草地上生活周期结束后，地下贮藏器官需要休眠2 个月左右，于7 月中下旬，地下芽开始出现形态分化和发育。其进程可分为萌芽期、花序原基分化期、花序形成期和花器官分化期4 个时期，历经2 个月左右，最终以发育成熟的花序进行越冬休眠。连续测定和相关分析表明，在整个夏眠期，牡丹草地下芽的茎高、芽长、芽径均随时间指数生长，茎高和芽长 ...
LIUXuelian(刘雪莲) +4 more
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Functional Ecology, Volume 40, Issue 7, Page 2221-2236, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Anthropogenic nitrogen (N) deposition is a major driver of global change. However, its effects on the developmental plasticity of plant nutrient strategies remain poorly understood.
Quan Li +11 more
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Journal of Animal Ecology, Volume 95, Issue 7, Page 1178-1193, July 2026.This population‐comparative study reveals that male and female parents respond differently to social and ecological conditions. This sex‐specific responsive strategy is related to the incongruent parental care systems across populations in Chinese penduline tits.
Jia Zheng +5 more
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Zhongshan Daxue xuebao. Yixue kexue ban, 2019 【目的】研究生后营养过剩对SD雌性大鼠生后生长的影响，从而指导临床对儿童的营养干预。【方法】通过孕期限食法建立宫内发育迟缓（IUGR）大鼠模型，选择符合标准的雌性新生仔鼠作为实验组（即I组），I组随机分成对照组（即IC组）和小窝组（IS组）；选择宫内未干预的雌性新生仔鼠作为对照组（即宫内发育正常组，C组），随机分成正常喂养组（CC组）和小窝组（CS组）。21d断乳后，IC组及CC组分别随机分成4只一笼，后正常饲料喂养，IS组及CS组高脂饮食喂养。每周测量各大鼠体质量及鼻肛长，并在不同生长发育周期 ...
陈丹纯 +5 more
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Integrative Conservation, Volume 5, Issue 2, Page 192-204, June 2026.We developed an effective ex‐situ conservation approach for an endangered orchid species, Dendrobium sinominutiflorum. A compatible fungal strain Tulasnella sp. was obtained by using in‐situ seed baiting technique. The Symbiotic germination with Tulasnella sp. significantly promotes seed germination and seedling growth.
Han‐Xiao Huang +6 more
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Shuitu Baochi Xuebao, 2005 在塔克拉玛干沙漠腹地特殊的生态条件下,通过植物固沙试验,对植物固沙中重要环节的植物种选择、配置、造林密度和造林季节以及合理灌溉问题进行了研究,并对不同灌溉条件下沙地盐分积累状况,以及对植物生长发育的影响进行了比较深入的研究。指出用矿化度>7.41g/L的咸水灌溉,对耐盐性较弱的固沙灌木的生长发育有限制作用。用矿化度<4.13g/L的咸水灌溉,在沟灌条件下对一般固沙灌木生长发育在短期内没有不利影响。而在滴灌条件下,林地盐分积累有逐年增加的趋势,这对固沙灌木的生长发育有一定的影响 ...
赵存玉 陈广庭 王涛
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