Identification of main effect and epistatic QTLs controlling initial flowering date in cultivated peanut(Arachis hypogaea L.)          下载免费PDF全文

WANG Liang  YANG Xin-lei  CUI Shun-li  WANG Ji-hong  HOU Ming-yu  MU Guo-jun  LI Zi-chao  LIU Li-feng 《农业科学学报》2020,19(10):2383-2393

Initial flowering date(IFD) is closely related to mature period of peanut pods. In present study, a population of recombinant inbred lines(RIL) derived from the cross between Silihong(female parent) and Jinonghei 3(male parent) was used to map QTLs associated with IFD. The RIL population and its two parental cultivars were planted in two locations of Hebei Province, China from 2015 to 2018(eight environments). Based on a high-density genetic linkage map(including 2 996 SNP and 330 SSR markers) previously constructed in our laboratory, QTLs were analyzed using phenotypic data and the best linear unbiased prediction(BLUP) value of initial flowering date by inclusive composite interval mapping(ICIM) method. Interaction effects between every two QTLs and between individual QTL and environment were also analyzed. In cultivated peanut, IFD was affected by genotypic factor and environments simultaneously, and its broad sense heritability(h2) was estimated as 86.8%. Using the IFD phenotypic data from the eight environments, a total of 19 QTLs for IFD were detected, and the phenotypic variation explained(PVE) by each QTL ranged from 1.15 to 21.82%. Especially, five of them were also detected by the BLUP value of IFD. In addition, 12 additive QTLs and 35 pairs of epistatic QTLs(62 loci involved) were identified by the joint analysis of IFD across eight environments. Three QTLs(qIFDB04.1, qIFDB07.1 and qIFDB08.1) located on chromosome B04, B07 and B08 were identified as main-effect QTL for IFD, which had the most potential to be used in peanut breeding. This study would be helpful for the early-maturity and adaptability breeding in cultivated peanut.  相似文献   

四川省外种猪遗传进展研究   总被引：1，自引：0，他引：1  

曾仰双 《四川畜牧兽医》2003,30(10):23-23,25

采用种猪性能测定技术和多性状动物模型BLUP法，连续3年对四川3个外种猪(长白、大约克夏、杜洛克)100kg体重活体背膘厚和日龄两个性状进行了性能测定和遗传进展研究。经过2年的选育，长白、大约克夏、杜洛克活体背膘厚分别下降0．86mm、0．49mm、-1．52mm，其遗传改进量分别为-0．27mm、-0．03mm、0．04mm；日龄分别降低0d、-5d、-17d，其遗传改进量分别为-0．05d、-1．60d、0．00d。  相似文献   

Effect of high molecular weight glutenins and rye translocations on soft wheat flour cookie quality     

《Journal of Cereal Science》2014,59(3):424-430

The influence of high molecular weight glutenin subunits (HMW-GS) on wheat breadmaking quality has been extensively studied but the effect of different Glu-1 alleles on cookie quality is still poorly understood. This study was conducted to analyze the effect of HMW-GS composition and wheat-rye translocations on physicochemical flour properties and cookie quality of soft wheat flours. Alleles encoded at Glu-A1, Glu-B1 and Glu-D1 locus had a significant effect over physicochemical flour properties and solvent retention capacity (SRC) profile. The null allele for Glu-A1 locus presented the highest cookie factor observed (CF = 7.10), whereas 1BL/1RS and 1AL/1RS rye translocations had a negative influence on CF. The three cultivars that showed the highest CF (19, 44 and 47) had the following combination: Glu-A1 = null, Glu-B1 = 7 + 8, Glu-D1 = 2 + 12 and no secalins. Two prediction equations were developed to estimate soft wheat CF: one using the HMW-GS composition and the other using physicochemical flour parameters, where SRCsuc, SRC carb, water-soluble pentosans, damaged starch and protein turned out to be better CF predictors. This data suggests that grain protein allelic composition and physicochemical flour properties can be useful tools in breeding programs to select soft wheat of good cookie making quality.  相似文献   

山西瘦肉型猪SD—Ⅱ系6月龄体重遗传趋势分析     

袁建霞  曹果清 《山西农业大学学报(自然科学版)》2000,20(3):250-252

用混合模型BLUP法对山西瘦肉型猪SD—Ⅱ系选育过程中 0～ 4世代 5 3头公猪的 6 0 3头后裔 6月龄体重进行了遗传趋势评估分析。结果表明 ,遗传传递力与后代平均表型值的相关及其名次的秩相关均达极显著水平 ;遗传趋势、表型趋势和年遗传改进量较高 ,且遗传趋势与表型趋势较一致 ,说明SD—Ⅱ系选育过程中所采取的育种措施是有效的 ,继续进行选育还有提高的可能。  相似文献   

基于Intranet的绒山羊BLUP育种系统     

张文广 《农业网络信息》2000,(3)

概述了Ｉｎｔｒａｎｅｔ技术的特点和ＢＬＵＰ（最佳线性无偏预测）育种系统的原理，提出采用Ｉｎｔｒａｎｅｔ技术设计绒山羊ＢＬＵＰ育种系统，逐步取代传统的ＰＣ计算和信息管理系统。该系统具有简洁、高效、使用方便等特点，并具有良好的可扩充性、可维护性和可移植性。  相似文献   

继代选育中用BLUP法对公猪进行逆向再评定的研究   总被引：4，自引：0，他引：4  

周忠孝  郭传甲 《中国畜牧杂志》1992,28(2):15-17

用带亲缘相关阵的BLUP法(BLUP-1),不带亲缘相关阵的BLUP法(BLUP- 2)及最小二乘法(LS),就日增重、背膘厚及外形评分三性状对SD-I系种公猪进行了逆向遗传再评定,以探讨BLUP法在猪继代选育中的应用。结果表明:①对遗传力较高的性状用综合指数法选择是比较理想的;②BLUP法较LS法精确,且以BLUP-1最精确,估计误差方差(PEV)最小;③选育中可用经加权而成的BLUP综合育种值代替多性状育种值。  相似文献   

基于BLUP和GBLUP方法估计北京油鸡胴体和肉质性状遗传参数的差异   总被引：1，自引：1，他引：0  

李晶  王杰  康慧敏  刘冉冉  李华  赵桂苹 《畜牧兽医学报》2020,51(1):35-42

旨在比较不同方法对遗传参数估计的差异,为未来北京油鸡胴体和肉质性状选育方法的制定提供参考依据。本研究利用传统最佳线性无偏预测（best linear unbiased prediction,BLUP）和基因组最佳线性无偏预测（genomic best linear unbiased prediction,GBLUP）两种方法对北京油鸡的胴体和肉质等性状进行了遗传参数估计。从系谱较为完整的北京油鸡群体中,选择100日龄体重相近的公鸡615只,测定其100日龄体重（BW）、屠宰率（EP）、胸肌率（BMP）、腿肌率（LMP）、腹脂率（AFP）、嫩度（T,以剪切力值表示）和肌内脂肪（IMF）等性状,并用SNP芯片（Illumina,60K）进行个体基因分型。结果表明,除IMF和剪切力（SF）遗传力基于两种方法的估值存在较大差异外,其余性状利用两种方法得到的遗传力估值差异较小;除嫩度外,GBLUP方法估计的遗传力均低于BLUP方法。所有胴体相关性状中,除屠宰率遗传力为低遗传力外,其余性状均属于中等遗传力性状。嫩度呈现低遗传力,而IMF基于BLUP法和GBLUP法的估计遗传力分别为中等（h² =0.256）和低遗传力（h² =0.107）。基于BLUP方法,IMF与BW、BMP和SF 3个性状间均呈高度遗传负相关（-0.572、-0.420、-0.682）,与EP的遗传相关为中度负相关（-0.234）,与AFP的遗传相关为中度正相关（0.420）;基于GBLUP方法,IMF与BW、BMP和SF 3个性状间均呈高度遗传负相关（-0.808、-0.725、-0.784）,与EP的遗传相关为高度负相关（-0.626）,与AFP的遗传相关为低度正相关（0.097）。综上,对于某些性状,基于传统的BLUP方法与新的GBLUP方法得到的遗传力与遗传相关估值存在较大差异,实际育种工作中,为提高育种效率,需要综合考虑。  相似文献   

混合模型方程组求解的一种快速算法     

张立岭  布和 《内蒙古农业大学学报(自然科学版)》1990,(2)

本文介绍了改进的CHOLESKY分解的原理与优点及其在混合模型方程组求解中的应用,讨论了混合模型方程组约束条件对本方法的影响,以及分子亲缘关系矩阵求逆的一种算法,利用这些算法算出了包头黄河奶牛埸十九头种公牛的育种值。最后根据上述算式给出了正定对称方程组求解和正定对称矩阵求逆的BASIC程序。  相似文献   

Genomic selection allowing for marker‐by‐environment interaction     

Torben Schulz‐Streeck  Joseph O. Ogutu  Andrés Gordillo  Zivan Karaman  Carsten Knaak  Hans‐Peter Piepho 《Plant Breeding》2013,132(6):532-538

Genomic selection has been routinely implemented in plant breeding in two stages. The first stage usually omits the marker information and estimates adjusted means of genotypes across environments. The second stage uses the adjusted means to predict genomic breeding values. However, if the effects of markers vary substantially between different environments, it may be important to account for this variation for varieties adapted to different environments. Using two maize data sets, we investigated whether modelling the marker‐by‐environment interaction can improve the predictive ability of genomic selection relative to modelling genotype‐by‐environment interaction alone. Modelling the marker‐by‐environment interaction did not substantially increase the predictive ability relative to modelling only the genotype‐by‐environment interaction for the two tested data sets. Thus, genomic selection, carried out in a stagewise fashion, such that the marker information is omitted until the last stage of the process, may suffice for most practical purposes. Moreover, predictive ability did not reduce substantially even when the number of markers with consistent effects across environments used for genomic prediction was reduced to about 50.  相似文献   

基于ASP种畜BLUP育种值的程序设计     

范强  田长永  俞美子 《农业网络信息》2011,(1):38-41

采用ASP语言编程,从Excel文件中读取数据,实现了种畜BLUP育种值的计算功能,为提高家畜选种效果提供了依据。  相似文献