Abstract:Observation on phytotomic characteristic relate to photosynthetic physiology in eaves of 5 species which of representative in phylogeny of Camellia Linn. with scanning electron microscope, analysis corrlation and phylogeny. These 5 species of Camellia are

Abstract:Calli were induced with frequencies of 75%- 90% using young pedicels,stems and leaves of Talinum Paniculatum(Jeaq. ) Geartn on MS medium. And then, the whole plants were regenerated from the calli via organogenesis.Suspension lines were established with c

Abstract:Studies on ultrastructure changes of cells in meristem region,elongation region and mature region of a root tip of Triticum aestivum L. reveal that neclear size, shape and structure change regularly. Endoplasmic reticulum, vacuole, plastid, mitochondrion,

Abstract:The structural changes of leaf surface in acclimatization and growth in field of in vitro plantlets of Sophora japonica were studied using scanning electron microscope. A progressively changing procedure of relative humidity and temperature from high to l

Abstract:经６％－１２％Ｄｅｘｔｒａｎ Ｔ７０密度梯度离心，获得了纯度较高的７ｄ龄花生幼苗下胚轴质膜和液泡膜制剂。１５０ｍｍｏｌ／Ｌ ＮａＣｌ或１０℃低温处理花生幼苗２４ｈ，其下胚轴质膜上的Ｍｇ＾２＋激活的ＡＴＰａｓｅ活性分别提高了３７．６％和１７．２％；Ｃａ＾２＋－ＡＴＰａｓｅ活性分别提高４５．８％和３３．６％。上述盐或低温处理也提高了液泡膜上Ｍｇ＾２＋激活的ＡＴＰａｓｅ活性，分别为对照的１４１．２％和１

Abstract:特定电磁波辐射器辐照玉米、小麦、绿豆干种子及发芽种子后，加一定量水置２８℃恒温下培育，然后定期取样分析测定幼芽和幼苗中抗坏血酸过氧化物酶活力及ＧＳＨ和抗坏血酸含量。研究指出，特定电磁波显著提高了酶活力及上述两种生理活性物质含量，增加幅度为１２％－６８％。作者认为用特定电磁波辐照种发芽种子有助于提高作物幼苗的抗逆能力。

Abstract:s,isozyme and proteins of single plllen grains were analysed successfully by micro- isoelectric focusing (Mulcahy et al. 1981; G Gay et al. 1986 ). It was studied that the specific protein expression directed against different developmental stage of polle

Abstract:Water requirements during stages of maize seeds radicle emergence, plumule emergence and seedling establishment have been studied with PEG imitating external water potentials. The experiments demonstrate that drought - resistance abilities of each cultiva

Abstract:The results showed that water productive efficiency can be improved by rainning and appling fertilizer and rotation in dry-land. Agent of rainning is more than that of appling fereilizer and rotation. Although two crops for a year raise to water productiv

Abstract:The pollen morphology of Punicaceae from china is examined under light and scanning electron microscopes. The result shows that the differences in pollen morphology among the species and varieties of Chinese Punicaceae are very clear and can serve as char

Abstract:Five alpine plants used for traditional Tibetan Medicine in Qinghai-Tibetan plateau were anatomically studied. It was shown that the leaf surfaces of some of the plants were covered with trichomes or thick cuticular layers and that the stomata of all the

Abstract:This paper deals with pollen morphology of 3 genera 6 species of subfamily Paronychioideae by LM and SEM. 1. There are 3 types in this subfamily: (1)SPergularia 3colpus. (2) Herniaria 3 -aperturate, (3)Gymnocarpos: polybrochate. 2. In type of aperturate,

Abstract:分析和报道了马先蒿属分布于青藏高原东北部６个特有种的核型，并根据核型及其有关参数，分析和比较了该６种马先蒿核型的不对称性和相对进化程度。６个种的体细胞染色体数目都是２ｎ＝１６。核型分别为：绵穗马先蒿Ｐ．ｐｉｌｏｓｔａｃｈｙａ Ｍａｘｉｍ．，核型公式Ｋ（２ｎ）＝１６＝４ｍ＋１２ｓｍ，染色体相对长度组成２Ｌ＋６Ｍ２＋６Ｍ１＋２Ｓ，核型不对称系数Ａｓ·Ｋ＝６５．２９％，属于２Ａ型；青海马先蒿Ｐ．ｐｒｚｅ

Abstract:This paper dealt with the relationship of yield and its components of wheat cultivars planted in Shaanxi Central Plain now and past by means of genetic correlative and path coefficient analysis. The result showed that the targets for recent wheat breeding