Genomic regions and pathways associated with gastrointestinal parasites resistance in Santa Inês breed adapted to tropical climate

Background： The aim of this study was to estimate variance components and to identify genomic regions and pathways associated with resistance to gastrointestinal parasites, particularly Haemonchus contortus, in a breed of sheep adapted to tropical climate. Phenotypes evaluations were performed to verify resistance to gastrointestinal parasites, and were divided into two categories： i） farm phenotypes, assessing body condition score（BCS）, degree of anemia assessed by the famacha chart（FAM）, fur score（FS） and feces consistency（FC）; and ii） lab phenotypes,comprising blood analyses for hematocrit（HCT）, white blood cell count（WBC）, red blood cell count（RBC）,hemoglobin（HGB）, platelets（PLT） and transformed（log10） egg per gram of feces（EPG_（log））. A total of 576 animals were genotyped with the Ovine SNP12k Bead Chip（Illumina, Inc.）, that contains 12,785 bialleleic SNP markers. The variance components were estimated using a single trait model by single step genomic BLUP procedure.Results： The overall linkage disequilibrium（LD） mean between pairs of markers measured by r2 was 0.23. The overall LD mean between markers considering windows up to 10 Mb was 0.07. The mean LD between adjacent SNPs across autosomes ranged from 0.02 to 0.10. Heritability estimates were low for EPG_（log）（0.11）, moderate for RBC（0.18）, PLT（0.17） HCT（0.20）, HGB（0.16） and WBC（0.22）, and high for FAM（0.35）. A total of 22, 21, 23, 20, 26, 25 and 23 windows for EPG_（log）for FAM, WBC, RBC, PLT, HCT and HGB traits were identified, respectively. Among the associated windows, 10 were shown to be common to HCT and HGB traits on OAR1, OAR2, OAR3, OAR5, OAR8 and OAR15.Conclusion： The traits indicating gastrointestinal parasites resistance presented an adequate genetic variability to respond to selection in Santa Inês breed, and it is expected a higher genetic gain for FAM trait when compared to the others. The level of LD estimated for markers separated by less than 1 Mb indicated that the Ovine SNP12k Bead Chip might be a suitable tool for identifying genomic regions associated with traits related to gastrointestinal parasite resistance. Several candidate genes related to immune system development and activation, inflammatory response,regulation of lymphocytes and leukocytes proliferation were found. These genes may help in the selection of animals with higher resistance to parasites.

优质籼型光温敏核不育系荃时S的选育与应用

介绍了荃时S的选育过程、特征特性、配组应用及繁殖技术要点。荃时S是以银312S为母本,与配合力好的优良恢复系YR0822杂交,采用系谱法选育而成的籼型光温敏核不育系,具有育性转换起点温度较低、不育性稳定、异交率高、抗倒伏、米质优等特点,2021年通过安徽省农作物品种审定委员会组织的专家技术鉴定。该不育系与恢复系银泰香占配制的籼型两系杂交水稻品种时两优泰香具有中抗稻瘟病、米质达部标优1级、丰产等特点,并获得2022年(第四届)安徽省优质稻品种食味品质籼稻金奖,2022年通过国家农作物品种审定委员会审定。

Breeding and Application of Indica PTGMS Line Yan 161S and Its Hybrid Yanliangyou 1618 in Rice

In 2006, the indica photoperiod- and thermo-sensitive genic male sterile （PTGMS） line Yan 161S was successful y bred by crossing the Guangzhan 63S （♀） and the medium indica breeding material Yan 229 （♂）, which was bred by the Institute of Agricultural Sciences in Coastal Region of Jiangsu Province, after years＇ and generations’ selection in different areas. It passed the identification by Jiangsu Provincial Crop Variety Appraisal Committee in 2013. Crossing the Yan 161S with Yanhui 888, a new high-yielding and high-quality two-line hybrid rice combination Yanliangyou 1618 was developed, and it passed the variety identification in 2014. This paper introduced the breeding processes and characteristics of Yan 161S and Yanliangyou 1618 and the cultivation and seed production techniques of Yanliangyou 1618.

Breeding and Application of Indica PTGMS Line Yan 220S in Rice

Yan 220S, which is derived from a natural variant plant discovered among the population of Guangzhan 63S and developed by Jiangsu Agricultural Research Institute for Coastal Regions through pedigree selection over years, is an indica photo- and thermo-sensitive genic male sterile （PTGMS） line in rice. In 2013, it was technically identified by Jiangsu Crop Variety Appraisal Committee. Its hybrid Yan-liangyou 2208 （Yan 220S/Yanhui 888）, a new two-line hybrid rice combination with high yield and good grain quality, was subsequently developed and released for commercial production by the National Crop Variety Appraisal Committee in 2013.

Studies on Breeding and Application of Thermo-sensitive Genie Male Sterile Line 402S in Brassica napus Ⅰ. Hie Breeding Procedure and Character of 402S

A new rapeseed TGMS line 402S has been bred through six years with seven generations by hybridization and systematic breeding.402S possesses the similar thermo-sensitive male sterility to its female parent Xiangyou 91S which performed fertile,partially sterile and sterile throughout the flowering stage,and resembles its male parent Zhongshuang 4 on agronomic traits.And 402S has the double-low (low erutic acid and low glucosinolate) quality like its original parents.

Effects of Distiller's Grain Substrate with Acid Regulation on the Growth of Tobacco Seedlings in Floating Breeding System

In order to reduce the use of peat resources and realize the sustainable development of tobacco, the pH of distiller s grain substrate was adjusted with humic acid, and the effects of various distiller s grain substrates on the growth of tobacco seedlings were studied to find out the method of cultivating high-quality tobacco seedlings by using distiller s grain substrate. The results showed that when 60% of humic acid was added to the distiller s grain substrate made from coarse distiller s grains, fine distiller s grains, perlite and vermiculite, both the pH and electrical conductivity decreased significantly and were similar to that of the conventional substrate. Moreover, the emergence rate of tobacco seedlings, the rate of strong tobacco seedlings, leaf number, stem height, root growth and quality of tobacco seedlings were good.

Genetic and Breeding Progress Analysis on S06M Line of Dahen Broiler

The genetic and breeding progress of Dahen S06M line was analyzed, in order to improve the selection efficiency. The results showedthat six generations of selection was effective in selecting main characters of S06M line, especially the selection of growth rate had no adverse effecton reproductive performance. All indicators of reproductive performance were improved in varying degrees during breeding, particularly the egg production at 68 weeks of age. The breeding progress of main target traits significantly slowed down after the second generation, but they still maintained at higher levels and the characters of S06M tended to be stable.

籼型水稻温敏核不育系虬S的选育

虬S是福建省农业科学院水稻研究所以P88S为母本与常规稻广东三抗为父本杂交,通过福建沙县与海南三亚两地穿梭,经6 a 12代的定向培育成的籼型水稻温敏核不育系,具有米质优、外露率高、抗稻瘟、繁制种产量高等特点,2020年通过福建省农作物品种审定委员会审定。

送你一朵圣玫瑰 新蓝S50 Santa Rosa全程体验记

1992年,中国湖南,一个名叫新浪潮的小公司悄然成立;两年后,它改名为新蓝;4年后,新蓝有了自己的品牌机;9年后,这个无名小卒出现在了全中国人民的视野中,那—年,新蓝成为全国八大品牌电脑之一。在笔记本电脑方面,新蓝与国内众多厂商相比也不遑多让。在经过一系列尝试之后, 2005年年初,新蓝全力推出全球第一款3999元笔记本电脑Dfree2000A,然后又紧接着推出更有震撼力的2999元笔记本电脑。

轻身俱来“芯”驰神往——内含英特尔^(TM)迅驰^(TM)双核处理技术,海尔Santa Rosa平台S20/S60笔记本电脑

笔记本市场的竞争是越来越激烈,从注重强劲配置到强调时尚外观,几乎所有能吸引眼球的噱头都引入了进来,以求在消费者中占得先机。作为国内家电大厂的海尔,自从与英特尔合作成立了"海尔&英特尔创新产品研发中心"以来,其在个人电脑领域的发展更是大步拓进,以一种特有的理念来向消费者展示着自身的风采,其中12.1英寸的S20和14.1英寸的S60这两款笔记本电脑便是海尔为我们呈现出的最新力作。

Remarkable achievements in rice breeding was acquired in the China's “Eighth Five-year plan”

During the China’"Eighth Five-year Plan", the Chinese rice breeders developed hundreds of new rice varieties(combinations) which have higher yield, better rice quality or higher resistance. Among them, 83 new varieties (combinations) were released in the national or provincial levels. In addition, many new germplasms and excellence breeding materials were obtained which is rery useful for the rice breeding in the future.

Jingle All the Way Santa Claus is coming to town and it seems like he’s here to stay

If you didn＇t know by now, Santa has a soft spot for China. From early November, the plastic cut outs of his rosy cheeks,piercing blue eyes and frothy beard watch you from every doorway, window and shop front. Some have even remained posted from the previous year. Christmas decorations become the most competitive game in town, with no self-respecting business wanting to be left behind breathing in tinsel dust.

Development and Utilization of 1S^1 Chromosomearm-specific Molecular Markers of Aegilops longissima

Introducing the 1S^1 chromosome of Aegilops longissima into wheat genome can significantly improve wheat grain quality and contents of iron and zinc. Therefore, the development of molecular markers specific to 1S^1 chromosome of A. longissima is of important significance for breeding high-quality wheat with high contents of iron and zinc in grains. In this study, nine molecular markers specific to 1S^1 chromosome of A. longissima were developed, including two 1S^1S specific markers,six 1S^1L specific markers and one 1S^1 specific marker which was located on both short and long arms. The practicability of these molecular markers were verified using hybrid population as materials. The results showed that hybrid population could be effectively screened and identified, which indicated that the developed 1S^1 chromosome-specific molecular markers could be used for screening and identification of hybrid population and could be used in marker-assisted breeding of high-quality wheat with high contents of Fe and Zn in grains.

应用花培技术选育优质低温敏水稻核不育系金山S-1

选用性状互补的两个亲本8-1S和香125S杂交,采用系谱育种和花药培养相结合的方法育成两用核不育系金山S-1,已于2004年12月通过福建省科技厅技术鉴定。该两用不育系具临界温度低、不育性稳定、不育期长(>120 d)、米质优、配合力好、异交率结实高等特点。以金山S-1配制的杂交稻新组合具产量高、米质优等特点,具有较广阔的应用前景。

籼型水稻温敏核不育系广茉S的选育及其应用

利用广占63-4S与茉莉新占杂交选育的广茉S,属无花粉型籼型水稻温敏核不育系,2005年8月通过安徽省技术鉴定。广茉S不育起点温度≤24℃,在合肥稳定不育期50d左右,育性转换明显,正常年份在9月2日前后。广茉S外观品质和加工品质优异,异交性状优良,配合力强,综合抗性较强。用广茉S已选配出一批产量高、米质优、适应性广的杂交中籼组合,其中两优100、广两优100已于2007年通过安徽省品种审定委员会审定。

Jankowski’s Bunting (Emberiza jankowskii): current status and conservation

Jankowski’s Bunting (Emberiza jankowskii) is a small bird with narrow distribution ranges. It has experienced a drastic population decline during recent years and vanished from most of its historic breeding sites. It has been recently up-graded as Endangered in the IUCN Red List of globally threatened species. By integrating unpublished data of field surveys conducted by us and published information on the species, we provide information on the status of distribution, breeding biology of the remaining population at the Dagang Forest Farm, population trends at currently known breeding sites, selection of breeding habitats and threats faced by the Jankowski’s Bunting. In light of its current status we also suggest ways and future research work related to protecting this bird species.

粳稻新质源温敏核不育系──滇农S-2的选育

滇农Ｓ－２是以云南地方品种毫干与优良的籼稻品种Ｖ２０杂交，再用黎明复交，按系统选育程序育成的新质源温敏核不育系。该不育系具有在较低温度下雄性败育而较高温下雄性恢复可育的特点。在昆明，不会出现可育性的转变，不育期长达９０天以上，育性稳定，对光照长度不敏感，容易找到可靠的繁殖与制种地点。在一定的条件下其育性受一对或二对隐性核基因控制，容易育成新的温敏两系杂交水稻强优势组合。

小麦纹枯病生防菌株S024的诱变育种研究

采用5种诱变方法(紫外线、微波、LiCl,LiCl+紫外线、LiCl+紫外线+微波)对出发菌株S 024进行了诱变处理.结果表明,几种诱变方法对S 024的诱变效果差异较大,紫外线(UV)照射和LiCl处理均未能筛选到正突变菌株;微波(MV)处理(50,100 s)可选育出高效菌株,LiCl和UV复合诱变处理的效果最好,共筛选到3个高效菌株(LiU-024-1,LiU-024-4,LiU-024-9),其中LiU-024-4菌株抑菌率比出发菌株S 024提高了34.44%;连续3代转代培养,其产生抗生素的能力基本稳定.用MV对3株高效菌株再进行诱变处理,其抑菌活性基本没有提高.

阿尔茨海默病“肾虚酿毒伤髓”病机演变模型构建及其应用

目的 根据肾-骨髓-血细胞-脑髓相互影响的中西医理论,建立一种阿尔茨海默病(Alzheimer′s disease, AD)“肾虚酿毒伤髓”模型,筛查AD有效中药,并初步探讨该模型的临床应用。方法 由于AD患者B淋巴细胞可以促进神经细胞产生Aβ毒素。将肾虚型AD患者外周血提取B淋巴细胞永生化,建立淋巴母细胞系(lymphoblastoid cell lines, LCL),并与人神经上皮瘤细胞(SKNMC)共培养,产生Aβ毒素,制成阿尔茨海默病“肾虚酿毒伤髓”模型。通过免疫荧光法检测Aβ_(1-42)的表达量,筛查有抑制Aβ_(1-42)生成的中药。并初步探讨该模型的临床应用。结果 与正常对照组相比,肾虚型AD模型中神经细胞Aβ_(1-42)的生成明显增多,具有统计学意义(P<0.01)。与肾虚模型组相比,白术、人参、黄芪、生地黄、梓醇减少了神经细胞Aβ_(1-42)的生成,差异具有统计学意义(P<0.01)。结论 白术、人参、黄芪、生地黄、梓醇可以减少AD中Aβ_(1-42)的生成。该模型除了筛查有效中药外,可以作为AD患者“肾虚酿毒”严重程度的生物标记物,及评价中药干预的疗效指标。

基于B/S结构的家蚕育种与种性维持信息管理系统

对家蚕育种亲本及其新品种性状数据档案实行信息化管理,可在家蚕育种和品种的种性维持过程中自动实现完整的信息采集、计算、调用、选择等功能。开发了一个基于B/S结构的家蚕育种与种性维持信息管理系统,主要包括品种管理、计划任务管理、饲育信息管理、蚕茧信息管理、选种信息管理、选优信息管理等功能模块。选种信息管理模块的运行过程是通过电子天平称量蚕茧质量,然后根据计算模型自动进行数据信息处理与统计分析实施选择。用户可以方便地通过网络访问该系统,实现家蚕新品种选育及种性维持工作的自动化。