‘库尔勒香梨’果实外观描述概况及其调控研究进展

该文对‘库尔勒香梨’果实不同外观特征的名称进行了综述,包括花萼脱落的果实、花萼宿存的果实,萼端凹陷的果实、萼端突起的果实,"公梨""母梨",粗皮果、畸形果。并提出统一名称的合理建议。还对‘库尔勒香梨’果实外观调控研究进展加以综述。     

核桃品种对黑斑病抗性的研究

作者用标准差法研究了20个核桃品种(系)对黑斑病的抗性,结果表明,供试品种(系)均可感病,但品种(系)间的抗性存在显著差异,其中‘陇32’和‘西林2’等2个品种(系)为高抗品种,‘陇11’‘陇15’‘维纳’‘扎343’‘辽3’等5个品种(系)为中抗品种,‘中林1’、A02、‘元丰’‘丰辉’‘西洛3’等5个品种为抗病品种,‘中林5’‘阿7’‘鲁光’‘辽1’‘辽4’‘西扶2’等6个品种为感病品种,‘香玲’和‘中林3’等2个品种为高感品种。     

Blockage of mesenteric lymph return promotes the vascular reactivity and calcium sensitivity in hemorrhagic shock rats

AIM: To observe the effects of mesenteric lymph duct ligation and mesenteric lymph drainage on the vascular reactivity and calcium sensitivity in hemorrhagic shock (HS) rats, and to investigate the role of mesenteric lymph on the vascular hyporeactivity during shock. METHODS: Seventy-two male Wistar rats were randomly divided into sham group (only operation), shock (duplicating HS model) group, shock+ligation group (duplicating HS model and mesenteric lymph duct ligation) and shock+drainage group (duplicating HS model and mesenteric lymph drainage). The changes of mean artery pressure (MAP) after injection of norepinephrine (NE, 3 μg/kg) at different time points were recorded. After hypotension (40 mmHg) for 3 h, the vascular ring of superior mesenteric artery (SMA) was made for determining the vascular reactivity and sensitivity to calcium by observing the contraction initiated by NE and Ca²⁺ under depolarizing conditions (120 mmol/L K⁺) in the isolated organ perfusion system. Meanwhile, the effects of angiotensin Ⅱ (AngⅡ) and insulin (Ins) on the vascular reactivity were also observed. RESULTS: Compared to sham group, the △MAP in shock group was increased significantly at 0 h and 0.5 h after shock, and that was decreased markedly at 1.5 h, 2 h, 2.5 h and 3 h after shock, respectively, and that in shock+ligation group and shock+drainage group was increased at 0 h, 0.5 h and 1 h after shock, decreased at 2.5 h and 3 h after shock, respectively. The △MAP in shock+ligation group and shock+drainage group was higher than that in shock group at 0.5 h after shock and all the time points followed. The SMA reactivity to NE and sensibility to Ca²⁺ in shock group, shock+ligation group and shock+drainage group were lower markedly than those in sham group. The vascular reactivity and calcium sensitivity in shock+ligation and shock+drainage groups were higher than those in shock group. The vascular reactivity and calcium sensitivity in shock group, shock+ligation group and shock+drainage group were lower than those in sham group, and those in shock+ligation and shock+drainage groups were increased as compared to shock group, respectively. CONCLUSION: Blockage of mesenteric lymphatic return with the methods of mesenteric lymph duct ligation and mesenteric lymph drainage promotes the vascular reactivity of HS rats. The mechanism may be related to improving the calcium sensitivity in the vasculature.     

臭椿病毒病病原鉴定

臭椿(Ailanthus altissima)属苦木科(Sima-roubaceae)落叶乔木,为我国常用中草药;以根皮入药,具有消炎、杀菌、杀虫、抗肿瘤及抗病毒等作用;亦可用在建筑、能源、环保和造纸等方面,具有广阔的开发和应用前景。已有研究表明,引起臭椿花叶症状的病毒病原主要     

Mitogen-activated proteins kinases pathway and pathological pain sensitization

Pathological pain or clinical pain is caused by tissue and nerve injuries, and is usually chronic and mainly divided into inflammatory pain and neuropathic pain. Pathological pain is typically characterized by hyperalgesia (increased responsiveness to noxious stimuli) and allodynia (painful responses to normally innocuous stimuli). The mitogen-activated proteins kinases (MAPKs) are a family of evolutionally conserved molecules that play a critical role in cell signaling, consisting of extracellular signal regulated kinase (ERK), p38, and c-Jun N-terminal kinase (JNK), which play an important role in neural plasticity of pathological pain. Inhibition of MAPKs alleviates inflammatory pain and neuropathic pain in different animal models. It is very important to study the inhibition of MAPKs as a therapeutic approach to treat pathological pain.     

粘类小麦雄性不育系F_1结实性状的遗传分析

采用MINQUE统计方法、加性-显性(AD)及其与环境互作的遗传模型,对粘类小麦雄性不育系和恢复系杂交F1小穗两边结实数、中间结实数等结实性状进行了分析。结果表明,粘类小麦雄性不育系育性恢复性主要以加性效应为主,其次是显性效应,加性方差占表现型方差的比例变幅为38%~48%;不育系(V)-90-110、(Ven)-90-110、(K)-224、(V)-224所配制的组合,在2个结实性状上,包括国内法、国际法,平均结实率均具有正向显著或极显著的加性效应,亲本5253、02-7-215、00-6-247、M8003具有使不育系恢复度提高的加性效应;双亲加性效应高的组合多数表现出其显性效应比较差;国际法恢复度高的组合(K-224×5253),究其原因是双亲国际法恢复度的加性效应高,尤其亲本5253国际法恢复度的加性效应在供试材料中是最高的,其显性效应也较高(36.14%);粘类小麦雄性不育系杂交结实率的高低与环境的互作相对较小,育性恢复性在年份间的表现比较稳定。     

黄淮海（南片）夏玉米高产高效栽培技术规程

本规程以高产、抗病、抗倒、稳产品种为核心,以精细播种、提高播种质量为基础;以中高密度为保证;以加强肥水调控为重点,以实现品种、技术和生态气候三个因素的最佳结合为目的,以技术、环境、产量指标与产量形成的动态关系为生长调控主线,     

郑州市休闲农业空间分布特征分析

休闲农业作为拓展城市旅游的朝阳产业,满足了城市居民日益增长的游憩需求,同时也为城市发展提供了未来储备。笔者以郑州市为例,综合空间地域、分布类型、交通可达性等多种因素,对郑州市休闲农业的空间特征进行分析评价,并针对休闲农业存在的问题,从规划合理性、类型多样性、空间可达性和提高参与性等方面提出了一些建议,旨在推动郑州市休闲农业的合理化均衡化发展,同时也为城市规划、旅游规划、政府合理优化景点布局等提供参考。