Post harvest physiconutritional changes in Kagzi limes (Citrus aurantifolia Swingle) treated with selected oil emulsions and diphenyl

Influence of oil emulsions and diphenyl on post-harvest physico nutritionalchanges in Kagzi limes (Citrus aurantifolia) was studied. During twelvedays of storage, physiological loss in weight (PLW) and rotting were at a minimum in fruits treated with Neem (Azadirachta indica A. Juss.) oilplus diphenyl; juice content was at a maximum in mustard oil + diphenyltreated fruits. With the advancement of storage period, total soluble solidswere increased while ascorbic acid and acidity of fruits decreased. Mustardoil plus diphenyl supported maximum ascorbic acid (25.60 mg/100 ml juice) andminimum total soluble solids (9.03%).     

优质油料种源诸葛菜

十字花科诸葛菜(Orychophragmus violoceus)是我国有开发价值的优质油料作物种源。1.诸葛菜的种子油分品质优良.农艺性状较好.是潜在的优质油料新作物。2.诸葛莱的种子油分品质优异.棕榈酸、亚油酸的含量较高.亚麻酸、芥酸的含量较低.是油菜优质育种的优良种源。3.诸葛菜还可以作为蔬菜、观赏植物的种源和体细胞遗传学的实验材料。     

光照强度对大豆产量及品质的影响Ⅰ.全生育期光照强度变化对大豆脂肪和蛋白质含量的影响

在人工控制条件下研究不同光照强度对大豆化学品质的影响,以及自开花后不同时期遮光处理大豆蛋白质、脂肪含量的变化.结果表明,光照强度对不同品质类型的大豆脂肪、蛋白质含量均有很大的影响.随着光照强度的降低,不同品质类型大豆蛋白质含量均呈上升趋势,而脂肪含量均下降,蛋白质脂肪总含量上升.品种间对光照强度变化的敏感程度不同,高蛋白品种对光照强度较迟钝,而高脂肪品种对光照强度较敏感.     

A novel polymer membrane for extraction applications

In this study, a new type of Aliquat 336/PVC membrane has been made for extraction experiments. This new membrane is capable of holding more Aliquat 336 than previously developed extraction membranes, hence overcoming a major problem that has confronted many researchers for a long time. The new membrane has been used to investigate the rate of extraction for the Cd(II) ion in 2.0 M HCl solution and the effect of membrane thickness on the rate of extraction. The experimental results have shown this new membrane has a promising future in relevant industrial applications. A new method is also used in this study to qualitatively identify the oily substance on the surface of membrane after the extraction experiment was completed. This oily substance has been found to be Aliquat 336.     

环氧化天然胶乳浸渍成膜的研究

用特别设计的恒温浸渍仪,对阳离子凝固剂、增稠剂、热敏剂、浸渍时间、温度等因素影响环氧化胶乳成膜的情况进行了研究。结果表明,用阳离子凝固剂及常规方法,浸渍成膜效果不好;不同的增稠剂或热敏剂效果不同;而在一定范围内,浸渍时间、浸渍温度均与胶膜厚度呈正相关。选用合适的配方和工艺条件可浸渍得到0.3—0.7mm的干胶膜,能满足一般浸渍制品的要求,其耐油性则比天然胶乳胶膜优越得多。环氧化胶乳制得的耐油手套同市售普通手套对比,前者耐油性比后者高近6倍。     

Diversity and association analysis of important agricultural trait based on miniature inverted-repeat transposable element specific marker in Brassica napus L.

Miniature inverted-repeat transposable elements(MITEs)are a group of DNA transposable element(TE)which preferentially distributed with gene associated regions.Tens of MITEs families have been revealed in Brassica napus genome,they scatter across the genome with tens of thousands copies and produce polymorphisms both intra-and inter-species.Our previous studies revealed a Tourist-like MITE,Monkey King,associated with vernalization requirement of B.napus,however there are still few studies reveal MITE association with agricultural traits in B.napus.In the present study,80 polymorphic markers were developed from 55 MITEs,and used to evaluate genetic diversity in a panel of B.napus accessions consisting of 101 natural and 25 synthetic genotypes.Five agricultural traits,oil content,glucosinolate content,erucic acid content,weight of thousand seeds(WTS)and plant height,were investigated across 3-years field experiments,in addition,two traits,hypocotyl length and root length,were evaluated at the 4-leaf stage in the laboratory.Correlations between the MITE-based markers and seven traits were analyzed,finally,10 polymorphic markers produced by 6 pairs of MITE specific primers were revealed relatively high correlation with 5 traits.Two polymorphic markers were anchored with two candidate genes,BnaA02g13530D and BnaA08g20010D,respectively,which may contribute to glucosinolate content and WTS.This research may contribute to genetic improvement through utilization of MITE-induced polymorphisms in Brassica species.     

萝卜花药愈伤组织诱导及褐变因素初探

以萝卜为试材,研究了不同激素配比、供体基因型、光照与温度以及蔗糖浓度对花药愈伤组织诱导的影响,同时比较研究了花药愈伤组织褐变过程中几种抗氧化酶活性变化。结果如下：P403在2.0mg/L 2,4-D+1.0mg/L 6-BA+2.0mg/L KT的MS培养基中愈伤组织的诱导率最高,愈伤组织开始褐化的时间晚,抗氧化酶的活性较高;同时进行低温预处理、高温预培养和初期暗培养的协同效果较任何一种单独处理好;6%的蔗糖浓度有利于愈伤组织的诱导。     

清代陕西关中的油料栽培与利用研究

基于对方志文献的梳理,说明了清代陕西关中地区大豆、麻子、芝麻、荏子、菜子、芥子、蔓菁子、亚麻子、蓖麻子、棉子、花生和向日葵等12种主要草本油料的栽培及相关的利用情况。     

油萝卜抗胞囊线虫基因的染色体定位及其在油菜附加系中的稳定性

【目的】油萝卜（2n=18,9条染色体分别被称作a～i）具有抗甜菜胞囊线虫的基因。探索油萝卜携带的抗甜菜胞囊线虫基因所在的染色体和外源的油萝卜染色体在油菜中的遗传稳定性。【方法】9个油菜附加系进行自花受粉,分别获得附加系的自交F2代。利用筛选的分子标记检测和原位杂交（FISH）检测附加染色体在F2代中的遗传稳定性;通过对9个油菜附加系F2代接种甜菜胞囊线虫的2龄幼虫,鉴定携带抗甜菜胞囊线虫基因所在的染色体。【结果】9个附加系自交F2代中的附加染色体遗传表现不一,5个油菜附加系的F2代中均有2条附加染色体,能稳定遗传;4个附加系的自交后代中附加染色体的遗传表现不稳定,部分后代中无附加染色体。FISH检测9个附加系自交F2代中的附加染色体表明：与分子标记检测的结果相符,并且4个不稳定的附加系中,有的自交后代虽然有附加染色体,但有1或2条。接种甜菜胞囊线虫测定结果表明,含有油萝卜染色体DD的油菜附加系对甜菜胞囊线虫的抗性水平与附加染色体的供体油萝卜相当,而其它8个附加系的自交后代未表现出抗性,与受体油菜相近。【结论】油萝卜的9条染色体分别附加到油菜中后,其遗传稳定性因附加的染色体而异,有的能稳定遗传,有的在自交后代中丢失1或2条;抗甜菜胞囊线虫的基因在d染色体上。     

Optimisation of oxygen delignification in production of totally chlorine-free cellulose pulps from oil palm empty fruit bunch fibre

The effects of oxygen delignification on prehydrolysed-soda pulps produced from oil palm (Elaeis guineensis) empty fruit bunch fibre were statistically investigated by employing response surface methodology (RSM). Polynomial estimation models of five response variables namely yield, Kappa number, α-cellulose, viscosity and brightness were developed, each model comprised of four-independent variables: reaction temperature, reaction time, the alkali charge, and initial Kappa number. The calculated optimum condition (95 °C reaction temperature, 60 min reaction time, 2% alkali charge, and initial Kappa number of 6.6) is capable to produce pulp with 98.1% yield, Kappa number 2.4, 97.38% α-cellulose, pulp viscosity 13.8 cPs and ISO brightness 67.1%, which were proven close to the predicted values calculated from estimation models. The results indicated that oxygen delignification which is used as the first stage of bleaching sequence has the ability to both delignify and increase pulp brightness without substantial reduction in viscosity and α-cellulose, that appeared to be beneficial for subsequent TCF bleaching.