桂花新品种

在系统调查我国桂花品种的基础上,对37个新品种(四季桂品种群6个、银桂品种群11个、金桂品种群7个、丹桂品种群13个)进行了描述。     

桂花资源的开发与应用现状及发展趋势

桂花虽在中国品种甚多,但许多品种还深藏在深山旷野,流散在民间等待开发。名花不等于名牌,拥 有资源只是有了创名牌的基础。必须充分利用资源优势、品种优势,尽快培育新优品种,通过不断优化升级, 创出优秀的桂花品牌商品进入市场,才真正有竞争能力,使名花转化为名牌,确保桂花产业的可持续发展。     

Bovine lactoferrin purification from whey using Yellow HE‐4R as the chromatographic affinity ligand

The worldwide production of whey increases by around 186 million tons each year and it is generally considered as a waste, even when several whey proteins have important economic relevance. For its valorization, inexpensive ligands and integrated chromatography methods need to be developed for specific and low‐cost protein purification. Here, we describe a novel affinity process with the dye Yellow HE‐4R immobilized on Sepharose for bovine lactoferrin purification. This approach based on a low‐cost ligand showed an efficient performance for the recovery and purification of bovine lactoferrin directly from whey, with a yield of 71% and a purification factor of 61.     

我国甜、糯玉米生产现状及前景分析

通过对我国甜、糯玉米育种现状、生产加工现状和市场现状及其生产前景分析，提出我国甜、糯玉米产业的形成关键要以加强育种研究；因势利导，重点发展，提高产量，扩大面积；制定甜、糯玉米质量标准，加快品种审定；发展订单农业，形成良性循环；引导消费，开拓和培育市场等为对策。     

综合法低度白酒新工艺应用试验

报导了综合法低度白酒新工艺在适用性试验、质量检查试验、增产试验、经济效益分析等方面的应用结果,探讨了该工艺的特点及推广应用价值。     

贵州桂花净油的成分研究

本文报道桂花净油的化学成分,采用GC/MS/DS定性、气相色谱定量。共检出54个成分,其中七个成分未见报道。银桂为上品,金桂是较好的品种,丹桂次之。     

Nonuniform FDM for Poisson-Type Equations on a Disk with Singular Solutions

We are concerned with the Dirichlet boundary value problem of Poisson-type equations on a disk. Matsunaga and Yamamoto [8 N. Matsunaga and T. Yamamoto ( 1999 ). Convergence of Swartztrauber–Sweet's approximation for the Poisson-type equation on a disk . Numer. Funct. Anal. Optimz. 20 : 917 – 928 .[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]] proved that if the exact solution u is very smooth over the closure of the disk, then the approximate solution by the Swartztrauber–Sweet scheme with uniform partition is second order accurate. In this article, it is assumed that the exact solution performs singular properties such that its derivatives go to infinity at the boundary of the disk. We use a stretching polynomial-like function with a parameter to construct a local grid refinement and consider the Swartztrauber–Sweet scheme over the non-uniform partition. The effects of the parameter are analyzed completely by carrying out convergence analysis and numerical results show that there exists an optimal value for the parameter to have a best approximated solution.     

甘薯HXK基因的克隆、组织表达及生物信息分析

通过RT-PCR技术从甘薯的总RNA中克隆得到了全长的己糖激酶基因,测序结果表明HXK(hexokinase)基因编码区长1491bp,编码496个氨基酸,其翻译的蛋白质分子量为53.4kD,其氨基酸序列与其它已知高等植物HXK基因具有很高的同源性.构建了原核表达载体pET-HXK,经IPTG诱导后可表达获得相对分子量约为71kD的外源融合蛋白,与预测结果一致.并对HXK基因在不同组织中的转录水平进行了数字表达谱和荧光定量分析.     

甜玉米分蘖与籽粒产量关系的初步研究

甜玉米在生育期间产生分蘖是普遍存在的现象,对甜玉米分蘖与其籽粒产量关系的初步研究表明:在正常栽培密度条件下,分蘖去除与否对产量及其产量性状没有明显的影响,但分蘖的有无作为植株性状是对产量有利的性状,选育甜玉米品种应选有蘖株较易获得高产品种.     

水杨酸对锦绣杜鹃叶片中PAL、PPO及POD活性的影响

用不同浓度的水杨酸（SA）处理锦绣杜鹃植株,分析不同的SA处理时间杜鹃叶片苯丙氨酸解氨酶（PAL）、多酚氧化酶（PPO）、过氧化物酶（POD）等主要防御酶活性的变化。结果表明：水杨酸处理杜鹃叶片可明显诱导PAL、PPO、POD等防御酶活性的提高,其中50～100μg／mL浓度的SA对诱导杜鹃PAL、PPO、POD酶的活性影响最为显著,但受SA诱导的影响各不同,主要是在对防御酶活性的提高和表达时间上存在着差异,其中PAL受SA诱导后,活性提高最大,持续时间最长。