柳杉花粉的散发规律

柳杉花粉囊为纵向开裂，雄球花在雨季对花粉具有保护功能；雌雄球花和花粉都对风媒传播发生了适庆性变化；花粉的散发，传播，沉降和空间分布，出现规律性变化，并受降水，气温，风力和大气湿度的综合影响。针对花粉散发特性，提出了经营种子园的有关建议。     

地被菊花粉萌发及花粉活力的研究

用ME的盐类和维生素附加16％聚乙二醇4000(PEG4000)和15％蔗糖对野菊及新红、塞旗红、玫瑰红的花粉进行培养。结果表明，萌发率分别为80．2％、85．3％、61．3％和46．5％。PE‰对菊花萌发有明显促进作用。但庶糖的作用不能被PEG所取代。菊花花粉萌发较合适的温度为10-20℃，在4-8℃时，萌发率及速度迅速降低，35℃萌发虽快。但花粉管短且破裂。在4℃条件下花粉可贮藏4-14d。但不宜干燥贮藏。     

Periodicity and gradients in dispersal ofAlternaria linicola in linseed crops

Conidia ofAlternaria linicola produced on infected linseed crops were mainly dispersed by wind. The numbers of conidia in the air above linseed crops collected by a Burkard spore sampler were greatest between 1200 h and 1300 h, when the relative humidity was lowest. Although numbers of conidia collected decreased with increasing height within and above the crop canopy, air-borneA. linicola conidia were present up to 80 cm above the crop canopy. Conidia ofA. linicola were transported by wind up to at least 40 m downwind from an artificial line inoculum source, but their numbers decreased with increasing distance from the source. In 1991, 1992, and 1993, the dispersal ofA. linicola conidia above linseed crops followed a seasonal periodicity which was influenced by weather conditions and cultural practices. The greatest numbers of conidia were collected during July, August and early September and coincided with periods favourable for sporulation and with an increase in the incidence of the disease in the senescent crop. Air-borneA. linicola conidia produced on point or line inoculum sources (naturally infected linseed stem debris) were responsible for the spread of the disease in linseed crops. In 1992 and 1993, the disease was first detected downwind from the sources, but by the end of the growing seasons, it had spread in all directions and up to 20 m and 60 m from the sources, respectively. Disease gradients were initially steep near the inoculum sources but they became flatter with time due to the secondary spread of the disease.     

破壁蜂花粉对蛋鸡免疫功能及肠道菌群的影响

试验将槐花蜂花粉进行振动磨超微粉碎破壁,分别按1 g/kg、5 g/kg、10 g/kg三个不同剂量混到蛋鸡饲料中,从7日龄开始饲喂至50日龄,每个剂量分两个试验,试验一用新城疫Ⅳ系疫苗免疫雏鸡,利用β-微量法监测血清中的血凝抑制抗体效价的动态变化;试验二用大肠杆菌油乳苗免疫雏鸡,利用间接血凝法监测血清中大肠杆菌抗体效价的动态变化。分别定期称重捕杀取脾、胸腺、法氏囊,计算免疫器官指数,取肠道内容物计数大肠杆菌和乳酸菌,测定肠道内pH值。结果表明,不同剂量的破壁蜂花粉均能不同程度地提高病毒抗原性抗体效价和菌体抗原性抗体效价,对雏鸡免疫器官的发育以及肠道内环境、菌群的平衡也有一定影响。     

花粉多糖注射剂质量标准中几个项目测定

根据中国药典对注射剂的要求,对花粉多糖的蛋白质、鞣质、树脂、草酸盐、炽灼残渣、钾离子、砷盐、重金属含量进行测定,均符合规定,达到质量标准。     

马来西亚的油棕（Elaeis huneesis）花粉营养成分研究

对马来西亚油棕花粉进行了蛋白质、氨基酸、游离氨基酸、还原糖、蔗糖、粗脂肪、磷脂、维生素C、维生素E、类胡萝卜素、黄酮类、多糖、多肽以及矿物元素的测试和研究,结果表明油棕花粉营养成分丰富而全面,且具特色,很有利用价值。     

花粉中雌二醇和睾酮含量研究

对花粉中雌二醇和睾酮含量研究表明，不同花粉品种其含量不同，差别甚大。因此，它为花粉的开发利用提供重要依据，作为儿童营养品应采用不含或含量低的花粉，而作为治疗不育症或经年期的药物，应采用高含量的花粉品种。     

Awn of darnel (Lolium temulentum L.) as an anthropogenic dispersal organ: A case study in Malo, south-western Ethiopia

Darnel ( Lolium temulentum ), a weed of wheat and barley, is either awned or awnless. The role of the darnel awn in dispersal was investigated in relation to human's agricultural practices in cereal cultivation in a Malo village, Gaytsa, south-western Ethiopia. In 24 free-threshing wheat fields and 11 emmer wheat fields, 129 and 88 spikes (one spike per plant), respectively, of darnel were randomly sampled. At the market in Gaytsa, 11 free-threshing wheat grain samples and eight emmer wheat grain samples of 150–200 g were collected. For each grain sample, the number of wheat grains and awned and awnless grains of darnel were recorded. The relative percentage of the awned form in free-threshing wheat fields was 8.53% and that in emmer wheat fields was 70.45%. The relative percentage of awned grains in free-threshing wheat grains from the market collection was 3.55% and that in emmer wheat grain lots was 75.20%. The morphology of awned darnel grains resembles emmer wheat grains and awnless darnel grains resemble free-threshing wheat grains. Thus, grain mimicry controls the close association of the two forms of darnel with the wheat species. The lack of an awn itself functions for darnel grain as a dispersal mechanism in free-threshing wheat cultivation systems compared with other wild grass species.     

杏不同品种花粉量及花粉萌发特性的研究

以17个鲜食杏品种、4个仁用杏品种和4个杏李杂交品种为试材,对单个花药花粉量、花粉萌发率、花粉管长度进行测定,并观察统计了这25个杏品种的完全花比例,为杏主栽品种选择适宜授粉树。结果表明:不同杏品种间单个花药花粉量、花粉萌发率、花粉管长度和完全花比率差异显著;不同果实类型(鲜食、仁用和杏李杂交)间花粉量和完全花比例差异显著,花粉萌发率和花粉管长度则没有果实类型间的显著差异。花粉量与花粉萌发率和完全花比率之间无显著相关性,而与花粉管长度显著相关(r=0.417,P0.05);花粉萌发率与花粉管长度极显著正相关(r=0.691,P0.01),与完全花比率负相关但不显著。聚类分析发现,花粉量较多且花粉管生长状况较好的杏品种有"串枝红"、"沙金红"、"金太阳"和"胡安娜",适宜作为授粉树;花粉粒较少和花粉管生长状况较弱的有"恐龙蛋"、"味帝"和"苏联4号",而它们的完全花比例都很高,需要配置授粉树。     

异源四倍体花粉授粉解决永嘉早香柚内裂的研究

以13a生的土柚砧永嘉早香柚为试材,用HR、SR二种异源四倍体花粉、土柚花粉分别对其进行授粉,研究永嘉早香柚的裂瓣控制和综合品质的提高。结果表明,用SR、HR花粉授粉不但使永嘉早香柚的裂瓣问题得到有效解决,而且使果实匀称度、单果质量、可溶性固形物、可食率都显著提高,同时,还能使果肉柔软、瘪子。相比较HR效果好于SR。土柚授粉虽然裂瓣问题基本解决,但却使永嘉早香柚由少子变成严重多子,可食率下降,肉质粗糙,果皮增厚。异源四倍体HR授粉对解决永嘉早香柚的裂瓣效果和综合品质提高,效果好于目前推行的各种方法,包括常规的异花授粉、栽培管理措施的改进等。