抗稻瘟病籼型水稻不育系广抗13A的选育

用抗稻瘟病的保持系福伊B为母本与K型不育系K17A的保持系K17B杂交,将广谱抗性基因与强配合力基因有效聚合,后代材料经多年稻瘟病重发区自然诱发抗性鉴定,选择抗稻瘟病的优良单株与珍汕97A测交,并进行连续多代择优回交,育成广谱抗稻瘟病的籼型水稻不育系广抗13A,2003年10月通过福建省科技成果鉴定.介绍了其主要特征特性及繁殖技术要点.     

高产杂交水稻新组合广优9939

广优9939是绵阳市农业科学研究院用三明市农科院选育的抗稻瘟病不育系广抗13A与自育的恢复系绵恢9939配组育成的杂交水稻新组合。该组合具有丰产性好、农艺性状优良、稻瘟病抗性较强等特点,于2013年5月通过四川省农作物品种审定委员会审定(川审稻2013005)。     

高产抗稻瘟三系杂交水稻新组合广优7289

广优7289是信阳市农业科学院利用自育的品质优良恢复系R7289与三明市农业科学研究所选育的高抗稻瘟病不育系广抗13A配组育成的,集抗性强、品质优、丰产稳产性好为一体的三系杂交水稻新组合,2018年7月通过河南省农作物品种审定委员会审定。     

籼型水稻三系不育系广抗13A“九二O”施用效果初探

广抗13A是三明市农科所选育成的广谱抗稻瘟病籼型水稻三系不育系，于2003年10月通过福建省科技厅科技成果鉴定。具有不育度高，育性稳定，广谱抗性较好的特点，且耐肥性强，主穗与分蘖穗差异较大，稻穗的颈部对“九二O”反应较钝感。根据对其不同的喷施时期与不同用量进行效果试验表明：广抗13A对“九二O”喷施时期以田间抽穗率10％～15％，喷施用量以20～30g／667m^2为宜。     

籼型水稻三系不育系广抗13A“九二○”施用效果初探

广抗13A是三明市农科所选育成的广谱抗稻瘟病籼型水稻三系不育系,于2003年10月通过福建省科技厅科技成果鉴定。具有不育度高,育性稳定,广谱抗性较好的特点,且耐肥性强,主穗与分蘖穗差异较大,稻穗的颈部对"九二○"反应较钝感。根据对其不同的喷施时期与不同用量进行效果试验表明:广抗13A对"九二○"喷施时期以田间抽穗率10%～15﹪,喷施用量以20～30g/667m2为宜。     

籼型水稻三系不育系广抗13A"九二0"施用效果初探

广抗13A是三明市农科所选育成的广谱抗稻瘟病籼型水稻三系不育系,于2003年10月通过福建省科技厅科技成果鉴定.具有不育度高,育性稳定,广谱抗性较好的特点.且耐肥性强.主穗与分蘖穗差异较大,稻穗的颈部对"九二0"反应较钝感.根据对其不同的喷施时期与不同用量进行效果试验表明:广抗13A对"九二0"喷施时期以田间抽穗率10%一15%,喷施用量以20～30 g/667m2为宜.     

抗稻瘟病水稻三系不育系广抗13A的高产繁殖技术

广抗13A系福建省三明市农科院选育而成的广谱抗病籼型三系不育系,具有抗稻瘟病、开花习性好、异交率高等特点。总结了其主要高产繁殖技术:培育壮种,合理移栽,加强本田管理。     

三系杂交水稻新组合广优9939高产制种技术

广优9939是绵阳市农科院用自育优质恢复系绵恢9939与三明市农科院选育的抗病不育系广抗13A配组育成的三系高产抗稻瘟病杂交稻新组合,2013年通过了四川省农作物品种审定委员会审定,审定编号:川审稻2013005。介绍了该组合亲本的特性特征,总结了其在绵阳地区的高产制种技术。     

抗瘟、高产杂交稻新品种广优2643的选育与应用

广优2643系福建省三明市农业科学研究所利用自育的三系不育系广抗13A与恢复系明恢2643配组育成的籼型杂交稻品种,具有丰产性好、抗稻瘟病等特点。2009年通过国家农作物品种审定和福建省农作物品种区域性（龙岩）审定。介绍了广优2643的选育经过、主要特征特性、栽培和制种技术要点。     

杂交水稻主要亲本和抗源及其相互双列杂交组合的抗性评价

采用5个不育系、7个恢复系、1个保持系和3个稻瘟病新抗源品种进行不完全双列杂交,配制77个组合,连同16个亲本共93个材料。用来源于三明、龙岩和南平三个地区的6个稻瘟病菌及混合菌系进行苗期接菌,鉴定苗瘟的抗性。结果表明：不同亲本和组合的稻瘟病抗性存在显著差异,不同的稻瘟病小种的毒性也存在明显的差异。在恢复系中,蜀恢527和多系1号抗性好,而不育系中,谷丰A和乐丰A的抗性不仅亲本表现好而且配制的组合表现也很好,可用于配组、筛选抗稻瘟病强的组合。保持系福伊B和3个新抗源品种的抗性好而且组合抗性好,可用于稻瘟病抗性改良。     

豫北优质大豆产业发展策略

针对豫北地区的大豆生产现状，从气候、土壤、品种、生态因素及市场需求等方面提出了优质大豆的发展策略与途径。     

Comparisons of methods of scheduling irrigations of potatoes

Irrigation of Netted Gem potatoes was scheduled during three growing seasons by three methods: (a) when plants displayed first visual symptoms of moisture stress, (b) when indicated by a soil moisture budget involving estimated evapotranspiration, and (c) on the basis of tensiometer readings of soil moisture suction. When the tensiometer method of scheduling was used, the mean yields of tubers were 55.0 and 25.8 cwt/acre (6160 and 2890 kg/ha) higher than those obtained with the other two scheduling methods. Methods did not affect the specific gravity of potatoes. Method (a) scheduled irrigations least frequently. Scheduling by the budget method was not always adequate because it was based on the assumption that the crop extracted water from a constant 4 ft (1.2 m) profile from planting to full vegetative growth. In one year the budget method scheduled the first irrigation earlier than necessary and delayed the second irrigation during a critical period of crop growth. From full vegetative cover to harvest the irrigation schedules were alike for both the budget and tensiometer methods.     

吉林省平安农业科学院大豆所大豆研究工作报告

1　吉林省平安农业科学院大豆研究工作简介吉林省平安农业科学院大豆研究所 ,设在吉林省长春市西安大路种子大厦内。现有科技人员 6人 ,其中研究员 2人 ,农艺师 2人 ,技术员 2人 ,定向培养研究生 2人。大豆研究所的主要任务是选育稳产、高产、优质及抗病虫大豆新品种 ;同时密切     

湖南沅陵4种绿茶品质成分分析

以长沙县高桥相同嫩度茶鲜叶原料采用卷曲形毛尖茶加工工艺制绿茶为对照,分别对沅陵县齐眉翠峰、凤娇碣滩茶、干发茶和军大坪茶4种绿茶的主要生化成分与感官品质进行初步分析。结果表明,沅陵4种绿茶的茶多酚总量28.76%~30.34%,游离氨基酸总量2.35%~3.22%,咖啡碱含量3.00%~3.63%,水浸出物含量37.26%~40.07%,可溶性糖总量5.46%~5.65%,可溶性蛋白含量1.50%~1.74%,类黄酮化合物总量1.16%~1.79%,叶绿素总量1.36%~2.01%,儿茶素总量13.53%~16.20%。与对照相比,4种绿茶的茶多酚、可溶性糖和儿茶素总量均高于对照,除齐眉翠峰外其余3种茶样水浸出物和叶绿素总量均高于对照,除干发茶外其余3种茶样类黄酮化合物总量均高于对照。     

Analysis of nutritional components of eight famine foods of the Republic of Niger

In the western Sahel, indigenous plants become important staples when cereal harvests are inadequate to support populations inhabiting that region of Africa. The purpose of this study was to assess the nutrient content of several of these edible wild plants. The leaves of the following seven plant foods were analyzed: Ziziphus mauritiana, Cerathotheca sesamoides, Moringa oleifera, Leptadenia hastata, Hibiscus sabdarifa, Amaranthus viridi, and Adansonia digitata. The fatty acid, vitamin E, carotenoid, selected mineral and amino acid contents of these plant foods were determined. These same analyses were performed on the fruit of the Adansonia digitata. In quantitative and qualitative terms, Amaranthus viridis was found to be an excellent source of protein. Its amino acid composition compared favorably to that of a World Health Organization (WHO) protein standard. It also contained considerable amounts of the two fatty acids that are essential in humans (linoleic and -linolenic) and a number of minerals including iron, magnesium, calcium and zinc. The leaves of Hibiscus sabdarifa contained an appreciable quantity of protein the composition of which was comparable to the WHO standard. The mineral content of the leaves of this plant was also exceptionally high; noteworthy was its high zinc content. H. sabdarifa also contained significant quantities of the two essential fatty acids. Ziziphus mauritiana was an excellent source of the essential fatty acid linoleic acid and several of the metals including iron, calcium, magnesium and zinc. Its content of other essential nutrients, however, was rather low. In general, Adansonia digitata leaves were nutritionally superior to the fruit of the tree; however, the fruit did contain useful quantities of potassium, phosphorus, zinc and -linolenic acid. The Leptadenia hastata leaves were an especially good source of lutein and -carotene. These data should be useful to the people who inhabit the western Sahel in helping them devise healthy diets during times when cereal staples are in short supply.     

防治水稻潜叶蝇的药剂筛选

通过对防治水稻潜叶蝇不同药剂、不同用量的田间对比试验,结果表明,32 g/kg的35%丁硫克百威拌种预防潜叶蝇效果最好,药效可达55 d以上,适宜在生产上推广应用。     

狗牙根诱变后代抗寒性评价

通过电解质外渗法和匍匐茎恢复试验对‘阳江’狗牙根及其12个通过形态鉴定选出的坪用价值高且花序密度低的诱变后代进行抗寒性鉴定。电解质外渗法结果表明:诱变后代间的抗寒性具有较大差异,其叶片半致死温度(LT₅₀)的变异范围为-7.6～-0.2℃(最低值与最大值相差7.4℃);参试材料抗寒性由强到弱依次为M18>M4>M26>M28> M22>阳江>M29>M31>M10>M37>M16>M1>M25,其中,有5个诱变后代抗寒性优于亲本,分别是M18、M4、M26、M28、M22。匍匐茎恢复实验结果表明:诱变后代M1、M22、M26、M31、M25在0℃和-5℃低温胁迫后的恢复生长率都高于亲本,恢复能力均优于亲本;M10、M37、M28在-5℃低温胁迫下,恢复生长能力低于亲本,抗寒性相对较弱,M16和M4在0℃和-5℃低温胁迫下,恢复生长率都低于亲本,抗寒性明显弱于亲本。综合2种方法鉴定结果显示:诱变后代M1、M25的恢复能力较强;M4、M28的叶片抗寒性较好,青绿期较长;M22、M18、M26的叶片抗寒性和匍匐茎恢复能力均较强;M29,M31的叶片抗寒性和匍匐茎恢复能力与亲本相似;M10、M16、M37的叶片抗寒性和匍匐茎恢复能力均较弱,整体抗寒性较弱。     

芦笋枯萎病病原鉴定

对造成福建省漳州市东山县的芦笋枯萎病病原菌进行分子鉴定,以期确定病原菌的属、种名,为防治该病害寻求理论依据。试验对分离纯化的病原菌核糖体DNA的ITS区进行测序,在Genbank中搜索其同源性并构建它们的系统发育树,结果表明：引起芦笋枯萎病的病原菌是镰刀属中的尖孢镰刀菌(Fusarium oxysporum),且病原菌之间的同源性高达89%,遗传差异不显著。