Yang Xiong , Gao Xinzeng , Li Wuling
1993, 13(1).
Abstract:本文报道白皮松茎次生韧皮部蛋白细胞中ATP酶和酸性磷酸酯酶的定位结果及其季节性变化。无论蛋白细胞发生在直立射线薄壁细胞中,还是横卧射线薄壁细胞或径向片薄壁细胞中,它们的ATP酶和酸性磷酸酯酶活性都显著地高于普通射线薄壁细胞。而且,与成熟筛胞联系的成熟蛋白细胞具有最为显著的ATP酶和酸性磷酸酯酶活性。蛋白细胞一旦解体,酶活性便急剧下降或消失。酶活性的表达贯穿春、夏、秋三季,以夏季最为显著。但是,两种酶在表达的时间和空间上有一定差异。作者认为,白皮松蛋白细胞中显著的ATP酶活性和酸性磷酸酯酶活性可能对韧皮部中碳水化合物的转运具有重要意义。
1993, 13(1).
Abstract:本文研究的目的是对太谷核不育小麦籽粒进行颜色标记,以便进一步利用太谷核不育小麦。以蓝粒小麦4D-4E二体异代换系作为际记性状供体,利用中国春小麦ph突变体诱导部分同源染色体联会,增加同组染色体间的交换,使4D染色体上的Tai基因与4E染色体上的蓝胚乳基因连锁。在本实验杂交组合[(Taitai×phph)×蓝粒小麦]×phph~2 F_3中得到一个蓝粒高不育穗行,经分析与继代观察,初步认为这一穗行为4E带有蓝胚乳基因的染色体片段转侈到4D染色体上,使蓝胚乳基因与Tai基因发生不完全连锁。同时对ph突变体诱导部分同源染色体联会的作用等问题进行了探讨。
Yao Yaqin , Wang Peihong , Hu Dongwei , Wang Zhenyi , Jiang Xuanli
1993, 13(1).
Abstract:本文用电子显微镜观察研究了抗旱性不同的6个小麦品种在不同程度水分胁迫下叶肉细胞超微结构的变化。结果表明:轻度水分胁迫(-0.5MPa)对参试的6个小麦品种叶肉细胞超微结构几乎没有影响。中度(-1.0MPa)和严重(-1.5MPa)水分胁迫下的叶肉细胞超微结构发生了程度不同的变化,且这种变化与品种抗旱性相一致。抗旱性愈弱的品种,对水分胁迫反应愈敏感。但表现在叶肉细胞结构上的变化过程基本一致。胁迫导致叶肉细胞质壁分离,液泡膜破裂。叶绿体变成球形挤入细胞中央,类囊体肿胀。线粒体基质变稀,脊减少。最终叶绿体、线粒体解体。其它细胞器消失,细胞中出现大量的小泡。
1993, 13(1).
Abstract:The paper is concerned with the process of stalar division in G. straminea root. The recent results of an experiment in developmental anatomy show that the primary structure of G. straminea is normal; and early stage of secondary growth is normal too. In
Qiao Chuanzhuo , Li Songlin , Cui Xi
1993, 13(1).
Abstract:Histological developmental studies on the adventitious roots of the seven species and four varieteis in genus Chloranthus, viz Chloranthux serratus, C.multistachys, C.japonicus, C.fortunei, C.holostegius, C.holostegius var. trichoneurus. C.holostegius var
Li Yingli , Lu Juxian , Feng Bianling
1993, 13(1).
Abstract:This paper reports pharmacognostical studies on roots of Tongoloa silaifolia (de Boiss) Wolff. The resouce, morphological and histological characteristics of this root were examined. Active componets containing in the root were examined by TLC. 8common me
Liu Quanhong , Xiao Yaping , Tian Xianhua , Huang Jiancheng , Liu Yaren , Feng Ying
1993, 13(1).
Abstract:本文在经典分类基础上,就秦岭地区常见的7种耳蕨属(Polystichum)植物,采用光学显微镜和扫描电子显微镜,对其孢子形态进行了系统的观察。在扫描电镜下,从形态和周壁纹饰上可将孢子分为两种类型:一种是周壁具明显的褶皱,其表面分布稀疏或较密集的小瘤状或小疣状突起,无穿孔;另一种周壁较薄,褶皱具明显穿孔,穿孔大小及形状不一致,周壁表面有颗粒状或小刺状突起。研究表明,孢子形态、周壁纹饰在种间具有明显差异,从而可为本属种间分类提供孢粉学依据。
1993, 13(1).
Abstract:Microwave irradiation was applied to maceration of cells of onion root tip meristem after freeze-cracking for scanning electron microscopy. Intermittent microwave irradiation prevented suddenly rise in the solution temperature, from causing damage to tiss
Li Libo , Yuan Changqi , Ting Chihtsun , Cheo Taiyien
1993, 13(1).
Abstract:This paper deals with the studies of plant taxonomy, anatomical characteristics of fruits and shape of pollen under both the light microscope and the SEM on the genus Cnidium Cuss. (Umbelliferae) in China. They are C. monnieri (L.)Cuss., C. monnieri var.
