油菜籽的贮存方法

根据各地在实际贮存中积累的经验,对于新收获的油菜籽应进行分级贮存,具体方法如下:     

论云南油菜籽生产潜力

云南可能是油菜起源中心之一，气候，土壤适合油菜生产，油菜籽含油量较高，单产也高，但是油菜种植面积小，油菜籽供需矛盾十分突出，发展油菜生产具有广阔的潜力。     

霉雨季节谨防油菜籽“一夜穷”

<正> “不怕菜籽不出油,就怕菜籽‘一夜穷’”。这是新宁县油菜产区群众对保管油菜籽的切身体会。所谓“一夜穷”,就是指油菜在收获期间碰到不利天气,菜籽在一夜之间全部生霉变质的现象。这是因为江南很多地方的油菜收获时,正值阴雨连绵的霉雨季节,菜籽的水分含量往往在20％以上,高的可达50％左右。新收获的油菜籽呼吸特别旺盛,放出大量的热量和水分,造成湿热积聚,极易生芽和     

油菜籽粕中提取硫苷的实验

本文着重探讨油菜籽粕中提取硫苷的主要影响因素,利用正交法安排实验,试验结果表明：１００℃８０％甲醇提取１０ｍｉｎ样品溶液比为１／１０时硫苷撮量最大,提出了适合不同用途的实用方法。     

预计今明两年油菜籽产量将创纪录

位于汉堡的油籽分析机构油世界预测，由于欧盟、加拿大和美国油菜籽增产，预计全球2007／08年度油菜籽产量年比将增加550万吨至创纪录的5270万吨。     

油菜籽机械化收割示范

罗平县气候温和 ,雨量充沛 ,年平均降雨量为1743.9mm ,是全省的多雨地区之一。夏季多大雨和暴雨 ;冬季常阴雨绵绵 ,为小春油菜的生产创造了得天独厚的自然条件。罗平是全国的31个油菜基地县之一 ,油菜籽种植面积2万hm2(30万亩) ,总产约占全省总产的1/4左右。为此 ,县、乡(镇)政     

黑暗条件下逆境胁迫诱导油菜籽次生休眠

Oilseed rape seeds (Brassica napus L.) harvested from mature plants require only imbibition of water and a suitable temperature. Despite this absence of primary dormancy, there is evidence that rapeseeds, due to the induction of secondary dormancy, are able to persist in the field for up to 10 years, and thus can emerge as volunteer plants in later crops. In addition, volunteers originate from seeds shed before and during harvest. The level of seed losses is influenced by the timing and technique of harvest, and can reach several thousand seeds per m2. As a consequence of both these effects, problems from volunteer rape occur frequently in subsequent crops. 　　Volunteer rape has been particularly troublesome in broad-leaved crops. It is a highly competitive weed and due to its prolonged period of emergence, timing of herbicide application is sometimes a problem. Volunteer rape can contaminate the sown crop resulting in heterogenous mixtures of seeds. This not only affects breeding and the production of seed crops, but can also affect growers when they switch from one type or quality of rape to another, or if they grow different rape qualities in one rotation, e.g., rapeseed for human consumption in the normal rotation and rapeseed for industrial use on set-aside land. The problem will not disappear with the introduction of herbicide resistant oilseed rape, as there are no indications that seeds of these cultivars will not have the potential to persist. The ability of rapeseed to persist in the soil for a long time and at high percentages also has to be taken into account in risk assessment of genetically manipulated rape, as rape can escape in space by pollen transfer or in time via the soil seedbank. Although hybridization between oilseed rape and wild crucifers is infrequent, it does occur. Traits, such as herbicide resistance or pest and disease resistance, if transferred into wild plants have the potential to alter the agro-ecosystem significantly.……     

2007年全球油菜籽产量预计5160万t

据德国汉堡的行业刊物《油世界》称，2007年全球油菜籽产量预计为5160万t，高于上年的4720万t。中国油菜籽产量预计为1100万t，上年为1270万t。     

The Relationship of Color Formation with Related Enzymes and Protein Contents in the Seedcoat of Oilseed Rape （Brassica napus）

Three pairs of near-isogenic lines with different genetic backgrounds of yellow-seeded and black-seeded rape (Brassica napus L.) were used as experiment materials to study the relationship of color formation in the seedcoat with enzyme activity and protein content in it. The results showed that with similar genetic backgrounds, phenylalanine ammonia-lyase (PAL) and polyphenol oxidase(PPO) activities in the black-seeded lines were much higher than in their yellow-seeded counterparts and maximum PAL activity in the seedcoat occurred comparatively late while no significant difference was present in glutamine synthetase (GS) between the two types of rape. The plants were treated with red light,blue light, p-hydroxybenzoic acid (a PAL inhibitor), polyvinylpyridoxal (a PPO inhibitor), urea (a protein synthesis promoter) or chloramphenicol (CM, a plastid protein synthesis inhibitor) during seed development. It is speculated that PAL may be primarily responsible for coloration in the yellow seed; PPO may be the main factor contributing to the darkness of the testa of the black genotypes; and nitrogen assimilation is, probably, not directly related to the difference in protein content observed between yellow- and black-seeded genotypes, which may be induced mainly by PAL.     

今年菜籽市场形势复杂

为全面掌握收购形势,专家对今年油为菜全籽面收掌购握市收场购进形行势了,专专项家调对查今调查显示,今年油菜籽市场形势错综复杂,不确定因素较多,油菜籽收购市场难以把握。     

油菜籽脱壳技术研究

为适应现代油菜籽加工技术对前处理工艺的要求,在比较研究传统种子脱壳技术的基础上,研制出动、定齿辗搓法破壳、悬浮床与振动淌筛相结合分离破壳混合物等一套新的油菜籽脱壳工艺和设备试验证明此技术效果良好,可应用于生产实际