Genome-wide Association Study on Alive Litter Size Trait in Bama Xiang Pigs     

MO Jiayuan  GAO Jiuyu  FENG Lingli  LI Yueyue  TIAN Weilong  LIU Xiaoxiao  CHENG Feng  LIANG Liang  LEI Shuqiao  WEN Wei  LIANG Jing  LAN Ganqiu 《中国畜牧兽医》2007,47(12):3965-3975

In order to identify the molecular markers related to alive litter size of Bama Xiang pigs,the genome-wide association study (GWAS) was used to map and screen the candidate genes affecting the alive litter size trait.Ear tissue samples of 297 Bama Xiang pigs with multiple parity records were collected,and DNA was extracted and genotyped by porcine 50K SNP beadchip.After quality control and genotype imputation,the alive litter size of Bama Xiang pigs were GWAS by Tassel.The results showed that the average number born alive per litter of Bama Xiang pigs increased gradually with the increasing of parity in the range of 1-9 parities.A total of 32 816 SNPs were obtained after quality control and filtration.8 SNPs related to alive litter size of Bama Xiang pigs were screened by genome-wide association analysis,which were significant at genome or chromosome level.Based on the enrichment analysis of the coding genes in the region between 500 kb upstream and downstream of the associated significant SNP loci,and the QTL regions and gene functions related to porcine reproductive traits,4 genes (CAPZB,MSH3,CITED2 and HSD17B7) were finally identified to be candidate genes related to alive litter size of Bama Xiang pigs.  相似文献   

紫花苜蓿品种比较试验   总被引：1，自引：0，他引：1  

吕林有何跃  魏臻武王威  赵艳林丽 《牧草与饲料》2007,1(3):35-37,51

通过对26个紫花苜蓿（Medicago sativa）品种的生育期、株高、产量、越冬率等指标的试验比较，结果表明：公农一号、保丰、陇东、德福等几个品种的表现优于其他参试品种，适宜在辽西北风沙地地区推广种植。  相似文献   

提高牛乳中共轭亚油酸含量的研究进展     

赵骞  赵悦  王琳琳  魏巍  林玉才  孙永强 《中国畜牧兽医》2006,33(4):25-27

共轭亚油酸已成为目前药物、食品及动物营养等研究领域的一个热点,其保健作用引起越来越多的关注和重视。作者阐述了现阶段提高牛乳中共轭亚油酸含量的各种方法和手段,为今后共轭亚油酸的深入研究作一参考。  相似文献   

0.13%百瓒防蛀气雾剂毒理学研究     

孔海苏 《青海畜牧兽医杂志》2006,36(2):19-20

对0.13%百瓒防蛀气雾剂及其主要有效成分辛硫磷进行了毒理学研究。结果表明:急性吸入毒性(LC50):雌、雄小鼠均大于2150mg/m3;急性经口毒性(LD50):小鼠为9 210mg/kg;皮肤刺激实验:无刺激作用;皮肤变态反应:致敏率为“0”;眼刺激试验:无刺激性;辛硫磷原药(85%)对大鼠28d亚急性吸入毒性:对雄、雌性大鼠无作用浓度(NOAEL)均为10mg/m3。  相似文献   

蛹虫草5个选育菌株的品比试验   总被引：1，自引：0，他引：1  

李森柱  夏凤娜  杨小兵 《中国食用菌》2006,25(6):15-16,19

采用加富PDA培养基对保藏的5个蛹虫草菌株进行菌丝生长速度和形态比较．并采用加富米饭培养基进行栽培性能比较．筛选出子座健壮、产量高、生产周期短、适合在南方地区春夏季节栽培的蛹虫草菌株CS—7。  相似文献   

石斛属植物的研究进展   总被引：2，自引：0，他引：2  

杨志娟  张显  张孟锦  朱根发  王碧青 《园艺学报》2006,33(6):1389-1396

 摘　要: 综述了近10年来石斛属植物在系统与分类学、细胞学、园艺学及育种学等多学科的研究成果, 并对未来我国石斛属植物的研究发展进行了展望。  相似文献   

东亚飞蝗的长期预测预报技术研究   总被引：2，自引：0，他引：2  

张书敏  任春光  王贵生  李虎群  高军 《中国植保导刊》2006,26(7):9-11

东亚飞蝗的发生面积、发生程度主要受残蝗面积、密度和降水条件的影响;库、湖蝗区的宜蝗面积主要受库、湖水位的影响。同时,东亚飞蝗的发生期主要受蝗卵发育期温度条件的影响。利用上述因子分别对东亚飞蝗的发生面积、发生程度及密度、3龄盛期进行预报,简便易行,准确可靠,时效性强,对指导防治工作十分有益。  相似文献   

龙红苹果与金红苹果比较试验     

程显敏 《北方园艺》2007,(4):50-51

对龙红苹果和金红苹果的产量、果实品质、果实性状、树体抗寒性、树体发育及新梢生长等进行调查分析比较.结果表明：龙红苹果果实外观性状、果实品质及产量等均优于金红苹果;龙红苹果果实熟期比金红早15d;龙红苹果树体发育及新梢生长与金红基本相当,但龙红苹果树体稍矮于金红苹果树体,便于管理.  相似文献   

Status of black grass (Alopecurus myosuroides) resistance to acetyl-coenzyme A carboxylase inhibitors in France   总被引：1，自引：0，他引：1  

C DÉLYE  Y MENCHARI  J-P GUILLEMIN†  A MATÉJICEK  S MICHEL  C CAMILLERI‡  & B CHAUVEL 《Weed Research》2007,47(2):95-105

We assessed the contributions of target site‐ and non‐target site‐based resistance to herbicides inhibiting acetyl‐coenzyme A carboxylase (ACC) in Alopecurus myosuroides (black grass). A total of 243 A. myosuroides populations collected across France were analysed using herbicide sensitivity bioassay (24 300 seedlings analysed) and ACC genotyping (13 188 seedlings analysed). Seedlings resistant to at least one ACC‐inhibiting herbicide were detected in 99.2% of the populations. Mutant, resistant ACC allele(s) were detected in 56.8% of the populations. Among the five resistant ACC alleles known in A. myosuroides, alleles containing an isoleucine‐to‐leucine substitution at codon 1781 were predominant (59.5% of the plants containing resistant ACC alleles). Comparison of the results from herbicide sensitivity bioassays with genotyping indicated that more than 75% of the plants resistant to ACC‐inhibiting herbicides in France would be resistant via increased herbicide metabolism. Analysis of herbicide application records suggested that in 15.9% of the populations studied, metabolism‐based resistance to ACC‐inhibiting herbicides was mostly selected for by herbicides with other modes of action. Our study revealed the importance of non‐target site‐based resistance in A. myosuroides. Using herbicides with alternative modes of action to control populations resistant to ACC‐inhibiting herbicides, the recommended management approach, may thus be jeopardised by the widespread occurrence of metabolism‐based resistance mechanisms conferring broad‐spectrum cross‐resistance.  相似文献   

除草剂安全剂的作用机制研究进展   总被引：3，自引：0，他引：3  

毕洪梅  张金艳  叶非  高爽 《农药科学与管理》2007,28(1):32-34,40

本文对国内外关于除草剂安全剂的作用机制研究情况进行了介绍,并对几种较为普遍认同的作用机制重点给予解释。  相似文献