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Journal of Integrative Agriculture 2014年第2期13卷 299-309页

作者： XIA Zhe ZHANG Xin LIU Yang-yang JIA Zi-fang ZHAO Hai-hong LI Cheng-qi WANG Qing-lian College of Life Sciences Henan Normal University Key Discipline Open Lab on Crop Molecular Breeding of Henan Institute of Higher Learning/Cotton Research Institute Henan Institute of Science and Technology

Segregation analysis of the mixed genetic model of major gene plus polygene was used to identify the major genes for cotton yield-related traits using six generations P1, P2, F1, B1, B2, and F2 generated from the cross of Baimian 1 x TM-1. In addition to boll size and seed index, the major genes for the other five traits were detected： one each for seed yield, lint percentage, boll number, lint index; and two for lint yield. Quantitative trait locus/loci （QTL） mapping was performed in the F2 and F2：3 populations of above cross through molecular marker technology, and a total of 50 QTL （26 suggestive and 24 significant） for yield-related traits were detected. Four common QTL were discovered： qLP-3b（F2）/qLP-3（F2：3） and qLP-19b （F2）/qLP-19（F2：3） for lint percentage, qBN-17（F2）/qBN-17（F2：3） for boll number, and qBS-26b（F2）/qBS-26（F2：3） for boll size. Especially, qLP- 3b（Fz）/qLP-3（F2：3）, not only had LOD scores 〉3 but also exceeded the permutation threshold （5.13 and 5.29, respectively）, correspondingly explaining 23.47 and 29.55% of phenotypic variation. This QTL should be considered preferentially in marker assisted selection （MAS）. Segregation analysis and QTL mapping could mutually complement and verify, which provides a theoretical basis for genetic improvement of cotton yield-related traits by using major genes （QTL）.

关键词： major gene segregation analysis QTL mapping yield-related traits upland cotton

Joint Analysis Method for major genes Controlling Multiple Correlated Quantitative Traits

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Agricultural Sciences in China 2006年第3期5卷 179-187页

作者： XIAO Jing WANG Xue-feng HU Zhi-qiu TANG Zai-xiang SUI Jiong-ming LI Xin XU Chen-wu Jiangsu Provincial Key Laboratory of Crop genetics and Physiology Yangzhou University Yangzhou 225009 P.R.China

Based on the major gene and polygene mixed inheritance model for multiple correlated quantitative traits, the authors proposed a new joint segregation analysis method of major gene controlling multiple correlated quantitative traits, which include major gene detection and its effect and variation estimation. The effect and variation of major gene are estimated by the maximum likelihood method implemented via expectation-maximization （EM） algorithm. major gene is tested with the likelihood ratio （LR） test statistic. Extensive simulation studies showed that joint analysis not only increases the statistical power of major gene detection but also improves the precision and accuracy of major gene effect estimates. An example of the plant height and the number of tiller of F2 population in rice cross Duonieai x Zhonghua 11 was used in the illustration. The results indicated that the genetic difference of these two traits in this cross refers to only one pleiotropic major gene. The additive effect and dominance effect of the major gene are estimated as -21.3 and 40.6 cm on plant height, and 22.7 and -25.3 on number of tiller, respectively. The major gene shows overdominance for plant height and close to complete dominance for number of tillers.

关键词： multiple correlated quantitative traits major gene joint segregation analysis maximum likelihood estimation,EM algorithm

Progress on major genes for high fecundity in ewes

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Frontiers of Agricultural Science and Engineering 2014年第4期1卷 282-290页

作者： Qiuyue LIU Zhangyuan PAN Xiangyu WANG Wenping HU Ran DI Yaxing YAO Mingxing CHU Key Laboratory of Farm Animal genetic Resources and Germplasm Innovation of Ministry of Agriculture Institute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100193China

The existence of major genes affecting fecundity in sheep flocks throughout the world has been *** major genes whose mutations can increase ovulation rate have been discovered,and all related to the transforming growth factorβ(TGF-β)*** mutant FecB of bone morphogenetic protein receptor 1B(BMPR1B)has an additive effect on ovulation *** mutations(Fec^(XI),Fec^(XH),Fec^(XG),Fec^(XB),Fec^(XL),Fec^(XR))of bone morphogenetic protein 15(BMP15)related with fertility have been identified that share the same *** the mutants can increase ovulation rate in heterozygotes and cause complete sterility in *** ewes with two new mutations(FecX^(Gr),FecX^(O))of BMP15 had increased ovulation rate without causing *** are five mutations in growth differentiation factor 9(GDF9)associated with sheep prolificacy where FecG^(E) and FecG^(F) have additive an effect on ovulation rate and litter *** newly identifiedβ-1,4-N-acetylgalactosaminyltransferase 2(B4GALNT2)gene of FecL is proposed as a new mechanism of ovulation rate regulation in *** is an X-linked maternally imprinted gene which increases ovulation *** addition,several putative major genes need to be *** review is focused on the identification of the mutations and mechanisms whereby the major genes affecting ovulation rate.

关键词： major gene ovulation rate sheep reproduction

Haplotypes at the 5′-Flanking Region of Peroxisome Proliferator-Activated Receptor γ gene and Their Association with the Growth and Body Composition Traits in Chickens

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Agricultural Sciences in China 2011年第2期10卷 296-303页

作者： HAN Qing WANG Shou-zhi HU Guo LI Hui College of Animal Science and Technology Northeast Agricultural UniversityHarbin 150030P.R.China

Peroxisome proliferator-activated receptor g（PPARg） is an important regulator of chicken preadipocyte proliferation and *** this study,polymorphisms were detected by DNA sequencing,PCR-RFLP and some other methods and three polymorphisms（g.-1784_-1768del17,c.-1241GA and c.-75GA） were found in the 5＇ flanking region of PPARg *** and body composition traits were measured in the 8th-10th generation populations of the Northeast Agricultural University broiler lines were divergently selected for abdominal fat *** among individuals were screened in the above *** haplotype-based association analysis on growth and body composition traits was carried *** association analysis showed that haplotypes based on three polymorphisms at 5＇ flanking region of PPARg gene were significantly associated with abdominal fat weight（AFW）,abdominal fat percentage（AFP,AFW/BW7）,liver weight（LW）,liver weight percentage（LFP,LW/BW7）,shank length（ShL）,femur weight（FeW）,keel length（KeL）,and metatarsus circle（MeC）（P0.05） and suggestive significantly associated with pectoralis major weight（PMaW）,pectoralis minor weight（PMiW）,pectoralis minor weight percentage（PMiWP,PMiW/BW7）,and metatarsus length（MeL）（P0.2）.The least square analysis showed that the birds with BGA haplotype had significantly higher AFW and AFP than the birds with other haplotypes（P0.05）.The birds with AAG haplotype had significantly higher LW and LW/BW than the birds with other haplotypes（P0.05）.The birds with AAG haplotype had significantly higher PMiW and PMiW/BW than the birds with other haplotypes（P0.05）.The birds with AAG haplotype had significantly higher ShL,FeW,MeL,MeC and KeL than the birds with AGG haplotypes（P0.05）.The results in this study revealed that QTL affecting fatness traits may exist in 5＇ flanking region of PPARg gene in chickens and PPARg gene might be one of the genes having important influences on the growth and bone traits in chickens.

关键词： chicken PPARg haplotype fatness bone major gene

Inheritance of marsh spot disease resistance in cranberry common bean(Phaseolus vulgaris L.)

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The Crop Journal 2022年第2期10卷 456-467页

作者： Bosen Jia Robert L.Conner Nadeem Khan Anfu Hou Xuhua Xia Frank M.You Ottawa Research and Development Centre Agriculture and Agri-Food CanadaOttawaOntario K1A 0C6Canada Department of Biology University of OttawaOttawaOntario K1N 6N5Canada Morden Research and Development Centre Agriculture and Agri-Food CanadaMordenManitoba R6M 1Y5Canada

Common bean(Phaseolus vulgaris) is an annual legume crop that is grown worldwide for its edible dry seeds and tender pods. Marsh spot(MS) of the seeds is a physio-genic stress disease affecting seed quality in beans. Studies have suggested that this disease involves a nutritional disorder caused by manganese deficiency, but the inheritance of resistance to this disease has not been reported. A biparental genetic population composed of 138 recombinant inbred lines(RILs) was developed from a cross between an MS resistant cultivar ‘Cran09’ and an MS susceptible cultivar ‘Messina’. The 138 RILs and their two parents were evaluated for MS resistance during five consecutive years from 2015 to 2019 in sandy and heavy clay soils in Morden, Manitoba, Canada. The MS incidence(MSI) and the MS resistance index(MSRI) representing disease severity were shown to be both highly correlated heritable traits that had high broad-sense heritability values(H;) of 86.5% and 83.2%, respectively. No significant differences for MSI and MSRI were observed between the two soil types in all five-(MSI) or four-year(MSRI) data collection, but significant correlations among years were observed despite MS resistance was moderately affected by year. The MSIs and MSRIs displayed a right-skewed distribution, indicating a mixed genetic model involving a few major genes and polygenes. Using the joint segregation analysis method, the same four major genes with additive-epistasis effects showed the best fit for both traits, explaining 84.4% and85.3% of the phenotypic variance for MSI and MSRI, respectively. For both traits, the M1, M2, M3 and m4 acted as the favorable(resistant) alleles for the four genes where M and m represent two alleles of each gene. However, due to epistatic effects, only the individuals of the M1 M2 M3 M4 haplotype appeared to be highly resistant, whereas those of the m1 m2 m3 M4 haplotype were the most susceptible. The m4 allele significantly suppressed the additive effects of M1 M

关键词： Common bean Cranberry bean Marsh spot Resistance Recombinant inbred line(RIL) Joint segregation analysis major gene Polygene

genetic analysis and major genes mapping of BNS-type thermo-sensitive genic male sterility and its fertility restoration in wheat

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Genetic analysis and major genes mapping of BNS-type thermo-...

genetic segregation analysis of unsaturated fatty acids content in the filial generations of high-linolenic-acid rapeseed(Brassica napus)

第八届全国小麦基因组学及分子育种大会

作者： Wenhui Wei Yuquan Wang Zhihui Ma Na Dong Zhaopu Wen Jiabing Li Zhipeng Niu Zhengang Ru College of LifeScience and Technology Henan Institute of Science and Technology/Collaborative Innovation Center of Modern Biological Breeding of Henan Province

It is particularly urgent to increase the yield of grain crops with the rise of world populatioa The exploitation of heterosis will be the first way to drastically increase the yield of wheat(Triticum aestivum) in the future.A thermo-sensitive genic male-sterile(TGMS) wheat line BNY-S was obtained from the spontaneous mutant of *** line was selected from BNY-S x Lankao 52-24,and BNS 366 line was selected from BNS× Zhengmai 366,so BNY-S,BNS and BNS 366 carry the same male sterile gene(s).BNS-type TGMS wheat is a novel germplasm in two-line hybrid wheat productioa genetic analysis of an F population from BNY-S x Lankao 52-24 indicated that the sterility of BNY-S was controlled by a single recessive gene,which was named as wtms1 flanking markers Xgwm 374 and E:AAG/M:CTA with the distance of 4.8 cM and 6.9 cM,*** an F population from BNS 366 x Ai 055525,this male sterile gene was mapped to the same interval flanking markers Xbarcl8 and Hist35 with the distance of 5.2 cM and 4.0 cM,*** map the fertility restoration genes of BNS-type TGMS,the F population from BNS 366 × Ai 055525 was *** analysis showed that the fertility restoration of BNS 366 was controlled by two major genes and over ten minor genes in restorer line Ai *** two major restoration of fertility(Rf) genes were mapped on the chromosomes 1 B and 4 A of Ai *** the chromosome 1 B,the major Rf gene TaRf1 B was located between markers Xgwm550 and Xgwm33 with the distance of 9.7 cM and 18.0 cM,*** major Rf gene TaRf4 A on chromosome 4 A was located between markers Xcfd257 and Hist142 with the distance of 25.0 cM and 13.0 cM,*** results will be a basis for fine mapping of BNS-type TGMS gene and its major Rf genes.

关键词： Triticum aestivum major gene gene mapping TGMS gene Rf gene

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Oil Crop Science 2021年第4期6卷 169-174页

作者： Xiaohan Zhang Jinglong Lian Chunyan Dai Xiaoli Wang Mingzheng Zhang Xing Su Yaohua Cheng Chengyu Yu College of Agronomy Northwest A&F UniversityTaicheng Road 3YanglingShaanxi712100China Institute of Agricultural Sciences Garze Prefecture.Lucheng South Road 88KangdingSichuan626000China

Alpha linolenic acid(ALA)is an essential polyunsaturated fatty acids that can improve human *** is the second largest oil crop in the world but the ALA content in its seed fatty acids is only about 10%.Two rapeseed germplasms YH25005 and R8Q10 with high content(up to 21%)ALA were developed by intervarietal *** were used as the maternal parent(P_(1))when crossed with a low ALA parent SW(P2)to produce the seeds of the F1 hybrid,F2,and backcrosses to P1(BCP1)and P2(BCP2).A multigeneration joint segregation analysis was conducted to determine major gene t polygene effects of the content of three major unsaturated fatty acids including oleic(OA),linoleic(LA)and *** results showed that,although some genes favorable to ALA accumulation were not allelic in R8Q10 and YH25005,all the inheritances of OA,LA and ALA in YH25005×SW and R8Q10×SW followed a genetic model of‘two pairs of additive major genes t additive-dominant polygenes’.It is suggested that the contents of OA,LA and ALA are closely related and the major genes in the parent SW containing loss-of-function mutations in FAD2 and FAD3 loci had strong effect to reduce ALA and elevate ***,total genetic effect of the polygenes was greater than that of the two major genes,especial on ALA *** indicated that it is necessary to employ a larger F2 population to find the plant that accumulate enough minor-effect polygenes for high ALA *** results are useful for high ALA rapeseed breeding and future work of gene mapping.

关键词： Rapeseed High linolenicacid Fattyacid genetic analysis major gene Polygene