菌中贵族柳松菇

柳松菇,又称柳蘑、柳树菇等,作为一个商品名称,与南方市场所称“柳松茸”极易混淆,多数科技工作者称其为“黄伞”,这大概是书面用语较多的一个名称,但因国家尚未对其规范名称,姑且按习惯或按地方名称也罢.近来有不少电话咨询该品种,故匆作小文,以助推广.     

水曲柳种群种子雨的研究初报

水曲柳种群在长期历史演化过程中形成了自身传播特征。传播方式有风播和水播;孤立木和林中母树传播各异,孤立木在主风方向上传播最大距离60多米,在15m处出现分布高峰;林中母树传播最远距离为50m,分布高峰在母树周围。种子传播的有效距离为35m。种子雨过程受地形及所有林分环境的影响。     

旱柳窄吉丁虫生活史的初步观察

旱柳窄吉丁虫生活史的初步观察王杰生（眉县林业调查设计队，陕西眉县，７２２３００）商平华（眉县林业工作站，陕西眉县７２２３００）李［（眉县营头林场，陕西眉县７２２３００）１分布及危害情况旱柳窄吉丁（ＡｇｒｉｌｕｓｓＰ．）是危害旱柳主干的钻蛀性害虫，在眉...     

新疆杨树和柳树壳囊孢属真菌的生物学特性研究

为明确新疆杨树(Populus sp.)和柳树(Salix sp.)腐烂病菌的生物学特性,对来自新疆杨树和柳树的13种壳囊孢属(Cytosporaspp.)真菌的菌落颜色、菌落边缘形状及培养20 d后子实体的有无进行观察记录,同时测试了不同代表菌株对温度、pH值、光照的适应性及碳氮源利用试验。结果表明,基于菌落颜色、菌落边缘形状及子实体有无,将13种壳囊孢属真菌划分为7个形态学类群;大多数菌株的最适生长温度为25℃,最适pH值为6,光照可明显促进菌丝的生长;菌丝生长的最适碳氮源分别为葡萄糖和酵母膏。     

Assessment of tolerance of willows to saline soils through electrical impedance measurements

One-year-old potted clone plants of four willow species (Salix matsudana × alba, S. babylonica, S. psammophila and S. cheilophila) were cultivated and irrigated with saline solutions of different concentrations, while their electrical impedance spectroscopy (EIS) parameters and other physical parameters were monitored. The results indicate i) that under salt stress, height and basal diameter of all species are inhibited, and ii) that relative conductivity of cellular exudates increases while intracellular resistance (ri) and extracelluar resistance (re) drop. Both ri and re were positively correlated with height growth and basal diameter while they were significantly and negatively correlated with electric conductivity. The concentration of Na + in the shoots of willows was negatively correlated with both ri and re , whereas the concentration of K+ in the shoots was positively correlated with both ri and re . Hence, electrical impedance spectroscopy is a reliable tool for evaluating the capacity of willow species for tolerance to saline soils, with r i as the most accurate parameter.     

鲜花引路——鸡蛋花

好久没有来星海公园了,不曾想,星海公园的湖水变得这么漂亮.湖水转变成碧绿,垂柳在我的面前,落到水中,成了浅浅的墨影,两头巨鲤从墨影下缓缓游过.远处的光影中,无数的水纹向着不同的方向闪动.碧绿的湖水,让远处楼房也留不下踪影,只有对岸的柳树,还在湖水中倒映出隐隐约约的影子.湖边有一棵鸡蛋花,已经长在石栏杆的外面了,它并非生长在水中,     

柳树耐旱机制及耐旱品种研究进展

干旱胁迫是一种非生物胁迫,会对植物造成渗透胁迫、氧化应激等不利影响。柳树抗逆性强,在园林造景、改善环境及生物能源上都有应用。本文从柳树对干旱胁迫的生理形态及分子机制变化展开讨论,综述了柳树抗旱品种选育的研究进展。柳树抗旱品种的选育可通过杂交无性繁殖、抗旱基因编辑等方式,创建健全的柳树遗传转化培育体系,从而为耐旱柳树品种培育提供更坚实的种质后盾。     

明知赃物却运输 追悔莫及法无情

2007年秋天,赵学、魏东（化名,均另案处理）窜至内乡县夏馆镇黄靳村周庄河两次盗窃6棵柳树,夏馆镇黄靳村民张坤（化名）明知是犯罪所得,仍然伙同赵学、魏东一起将盗的柳树拉到夏馆镇某筷子厂卖掉。被盗的6棵柳树总价值1894元。2009年5月14日,内乡县法院以掩饰隐瞒犯罪所得罪判处张坤管制一年,并处罚金。