早熟转基因抗虫棉品种EZ9

EZ9是湖北省农业科学院经济作物研究所选育的转基因早熟抗虫常规棉品种，于2022年11月通过国家农作物品种审定委员会审定。该品种丰产性和稳产性好，纤维品质达到国家棉花审定品种Ⅱ型品种标准。简要介绍了EZ9的选育过程、生物学特性、产量表现、纤维品质、抗病虫性和栽培管理技术要点。     

强盛31玉米新品种的选育

强盛31杂交种是由山西省农业科学院1998年以自选系盛918玉米自交系为母本,盛919自交系为父本杂交组配而成.在1998～2003年各级产量试验示范中该品种表现为坚秆、大穗、抗旱、抗病和抗倒等特点,丰产稳产性好.全生育期需≥10℃积温2 700℃·d,该品种属早熟品种。     

大豆新品种牡豆10号的选育

牡豆10号是黑龙江省农业科学院牡丹江分院以黑农48为母本,黑河46为父本,杂交选育而成的大豆新品种。该品种丰产性和稳产性好,抗倒性好,籽粒较大,有光泽,商品性好,田间表现中抗灰斑病。2012-2013年全省10点区域试验两年平均产量3125.0公斤/公顷,2014年黑龙江省5点生产试验平均产量2918.1公斤/公顷,适宜黑龙江省第二积温带种植。     

高粱杂交种辽杂12号选育报告

辽杂12号（7050A／654）高粱杂交种是辽宁省农业科学院作物研究所用自选不育系7050A与外引恢复系654杂交组配而成，该品种为A2型细胞质，具有产量高，米质好，抗叶病，活秆成熟，抗倒伏，抗蚜虫，抗丝黑穗病，抗旱，抗涝、适口性好等优点，是食用型高粱杂交种。     

高产抗稻瘟病杂交水稻新组合中9优591

中9优591是恩施州农业科学院用自育抗稻瘟病恢复系恩恢591与中国水稻所选育的不育系中9A配组育成的抗稻瘟病杂交水稻新组合。该组合具有产量高、抗瘟性强、丰产性好、制种易获得高产等特点,2014年通过湖北省农作物品种审定委员会审定(审定编号:鄂审稻2014014)。     

高产抗病杂交中籼稻新组合蓉优8号

蓉优8号是重庆市农业科学院特色作物研究所用渝6A与渝恢5号配组育成的杂交中籼稻新组合,该组合产量高,稳产性好,抗稻瘟病能力强,品质较优,2006年6月通过重庆市农作物品种审定委员会审定。     

夏大豆新品种济J12105的选育及栽培技术

济J12105是济宁市农业科学院选育而成的高油、抗病、抗倒伏,落叶干净,丰产性好,籽粒商品性好的夏大豆新品种,该品种2018年通过天津市农作物品种审定委员会审定,审定编号:津审豆20180004。文章主要介绍其选育经过、特征特性、产量表现及适宜推广区域,并总结出其栽培技术,以期为该品种的推广种植提供参考依据。     

杂交稻新品种甬优9号在尤溪县种植表现及高产栽培技术

甬优9号系浙江省宁波市农业科学院作物所与宁波市种子公司联合育成的籼粳杂交稻新品种,其丰产性好,米质优,适宜在福建省作中稻种植。介绍了该品种在尤溪作中稻及一季晚稻示范种植产量表现及高产栽培技术要点。     

大豆新品种长农26选育报告

大豆新品种长农26是长春市农业科学院大豆研究所选育成功的大豆新品种,2008～2009年区域试验平均产量2 422.9 kg·hm-2,比对照品种白农10增产8.0%,2009年生产试验平均产量2 298.8 kg·hm-2,比对照白农10增产4.6%。该品种2010年1月通过吉林省农作物品种审定委员会审定,为中早熟品种,其主要特点是秆强、抗倒,较耐密植,丰产性、稳产性好,籽粒外观品质优良。     

优质中籼迟熟杂交稻川358优625的选育与应用

川358优625是四川省农业科学院水稻高粱研究所用自育三系新恢复系泸恢625与四川省农业科学院作物研究所育成的优质三系不育系川358A配组而成的三系杂交水稻新组合。该组合适应性强、稳产性好、米质较优、丰产性好、抗倒、耐寒性强、后期转色好,于2013年通过重庆市农作物品种审定委员会审定。     

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。     

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。     

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.     

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.     

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。     

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     

巴西橡胶树MADS-box基因家族6个成员的染色体物理定位

MADS-box基因家族广泛分布于真核生物中,巴西橡胶树的MADS-box基因家族主要参与花形态建成,对生殖生长起到重要的调节作用。目前,MADS-box基因家族的26个相关基因已被克隆分析,但它们在染色体上的具体位置还未确定。本研究以巴西橡胶树‘热研7-33-97’品种为材料,将MADS-box基因家族的6个成员（HbAGL8、HbAG15、HbAGL30、HbTT16、HbAP1和HbSVP1）定位在细胞核染色体上,通过双探针荧光原位杂交技术（FISH）对巴西橡胶树MADS-box基因家族的这6个成员在细胞核染色体上进行物理定位分析。结果表明：MADS-box基因家族的6个基因分别位于不同的染色体上,其中HbAGL15、HbAG8、HbAG30和HbSVP1基因定位在第4、5、7和8号染色体长臂上,其信号位点到着丝粒的平均百分距离是11.85、39.71、48.94和6.70;HbTT16和HbAP1基因定位在第1和13号染色体短臂上,其信号位点到着丝粒的平均百分距离是22.19和18.01。本研究结果揭示了巴西橡胶树MADS-box基因家族的6个成员在细胞核染色体上的实际位置,展现家族基因之间的分布特点和连锁遗传关系,不仅丰富了橡胶树分子细胞遗传学信息,也为橡胶树的分子辅助育种和比较基因组学研究提供了分子细胞遗传学的科学理论依据。     

Comparison of two methods of PCNB application for control of Rhizoctonia infection of potatoes

A broadcast application of PCNB (Terraclor) resulted in a reasonably uniform distribution of the chemical in the soil with the concentration decreasing in a linear fashion with increasing depth in the soil profile. A banded application resuluted in a considerably higher chemical concentration at the 4–6 inch depth than at the 0–2 or the 2–4 inch depths. The problem of the lack of uniformity of chemical distribution could probably be solved by altering nozzle placement and size and allow use of the band method of application to minimize grower cost. More complete disking in the case of the broadcast treatment would probably result in a relatively uniform distribution of the chemical but at higher cost to the grower. PCNB application rates of 10, 15 and 25 lbs per acre broadcast and 71/2, 10 and 121/2 lbs per acre in a band significantly reduced the severity ofRhizoctonia infection of Russet Burbank potatoes but did not increase potato yields significantly.     

Prediction of the digestibility of the diet of horses: evaluation of faecal indices

Data from in vivo digestibility trial with four to six horses fed twenty-seven forage-based diets are used to calculate prediction equations for the digestibility of dry and organic matter, based on the crude ash (CA), crude protein (CP) and crude fibre (CF) contents of diets and faeces. The most precise prediction of dry-matter digestibility (r.s.d. = 0.032, R²= 0.80) was derived from a multiple regression including faecal (CP, CF) and dietary parameters (CF). Among faecal parameters, CP was the best single predictor of both digestibility (r.s.d) = 0.040, r²= 0.63) and dietary CP content (r.s.d = 0.028, r²= 0.59). For biological reasons we propose a non-linear model that allows prediction of dry- and organic-matter digestibility from faecal CP Content with reasonable Precision (r.s.d = 0.038, 0.036, r²= 0.65, 0.74, respectively). This will be adequate for many studies, especially for free-living animals in rangelands.