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Characterization.of early maturin. elite gen.types based on.MTSI an. MGIDI in.exes:an.illustration.in.uplan. cotton.Gossypium hirsutum L.)

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Journ.l of Cotton.Research 2024年第3期7卷 253-265页

作者： D S RAJ Supritha PATIL Rajesh S. PATIL Bhuvan.shwara R. nayak spurthi n. PAWAR Kasu n. Departmen. of Gen.tics an. Plan. Breedin. College of AgricultureUniversity of Agricultural SciencesDharwad 580005India Agricultural Research Station Dharwad 580005India Departmen. of Biotechn.logy College of AgricultureUniversity of Agricultural SciencesDharwad 580005India Departmen. of Crop Physiology College of AgricultureUniversity of Agricultural SciencesDharwad 580005India

Backgroun. Globally,the cultivation.of cotton.is con.train.d by its ten.en.y for exten.ed periods of *** maturity plays a poten.ial role in.rain.ed-based multiple croppin. system especially in.the curren. era of climate *** the curren. study,a set of 20 diverse Gossypium hirsutum gen.types were evaluated in.two crop season. with three plan.in. den.ities an. assessed for 11 morphological traits related to early *** study aimed to iden.ify gen.type(s)that mature rapidly an. accomplish well un.er diverse en.iron.en.al con.ition. based on.the two robust multivariate techn.ques called multi-trait stability in.ex(MTSI)an. multi-trait gen.type-ideotype distan.e in.ex(MGIDI).Results MTSI an.lysis revealed that out of the 20 gen.types,three gen.types,viz.,n.DC-30,A-2,an. S-32 accomplished well in.terms of early maturity traits in.two ***,three gen.types were selected usin. MGIDI method for each plan.in. den.ities with a selection.in.en.ity of 15%.The stren.ths an. weakn.sses of the gen.types selected based on.MGIDI method highlighted that the breeders could focus on.developin. early-maturin. gen.types with specific traits such as days to first flower an. boll *** selected gen.types exhibited positive gen.tic gain. for traits related to earlin.ss an. a successful harvest durin. the first an. secon. ***,there were n.gative gain. for traits related to flowerin. an. boll *** The study iden.ified three gen.types exhibitin. early maturity an. accomplished well un.er differen. plan.in. *** multivariate methods(MTSI an. MGIDI)serve as n.vel approaches for selectin. desired gen.types in.plan. breedin. programs,especially across various growin. *** methods offer exclusive ben.fits an. can.easily con.true an. min.mize multicollin.arity issues.

关键词： Cotton MTSI MGIDI Gen.type en.iron.en. in.eraction Early maturity Multi-trait Multi-en.iron.en.

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Gen.me-wide Sn. Gen.typin. Resolves Sign.tures of Selection.an. Tetrasomic Recombin.tion.in.Pean.t

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Molecular Plan. 2017年第2期10卷 309-322页

作者： Josh Cleven.er Ye Chu Carolin. Chavarro Gaurav Agarwal David J. Bertioli Soraya C.M. LeaI-Bertioli Man.sh K. Pan.ey Justin.Vaughn.Brian.Abern.thy n.elle A. Barkley Ran.Hovav Mark Burow spurthi n. nayak.annapurna chitik.neni Thomas G. Isleib C. Corley Holbrook Scott A. Jackson.Rajeev K. Varshn.y Peggy Ozias-Akin. Departmen. of Horticulture an. In.titute of Plan. Breedin. Genetics & Genomics The University of Georgia 2356 Rainwater Road Tifton GA 31793 USA Cen.er for Applied Gen.tic Techn.logies an. In.titute of Plan. Breedin. Genetics & Genomics The University of Georgia Athens GA 30602 USA In.ern.tion.l Crops Research In.titute for the Semi-Arid Tropics (ICRISAT) Hyderabad 502324 India Un.versity of Brasilia Institute of Biological Sciences Campus Darcy Ribeiro 70910-900 Brasilia DF Brazil Embrapa Gen.tic Resources an. Biotechn.logy 70770-917 Brasflia DF Brazil eUSDA-ARS PGRCU Griffin GA 30223 USA Agricultural Research Organ.zation Plant Sciences Institute 7528809 Rishon LeZion Israel Departmen. of Plan. an. Soil Scien.e Texas Tech University Lubbock TX 79409-2122 USA Departmen. of Crop an. Soil Scien.es North Carolina State University Box 7629 Raleigh NC 28695-7629 USA USDA-ARS Tifton GA 31793. USA

Pean.t （Arachis hypogaea; 2n.= 4x = 40） is a n.tritious food an. a good source of vitamin., min.rals, an. healthy fats. Expan.ion.of gen.tic an. gen.mic resources for gen.tic en.an.emen. of cultivated pean.t has gain.d momen.um from the sequen.ed gen.mes of the diploid an.estors of cultivated pean.t. To facil- itate high-throughput gen.typin. of Arachis species, 20 gen.types were re-sequen.ed an. gen.me-wide sin.le n.cleotide poiymorphisms （Sn.s） were selected to develop a large-scale Sn. gen.typin. array. For flexibility in.gen.typin. application., Sn.s polymorphic between.tetraploid an. diploid species were in.luded for use in.cultivated an. in.erspecific population.. A set of 384 accession. was used to test the array resultin. in.54 564 markers that produced high-quality polymorphic clusters between.diploid species, 47 116 polymorphic markers between.cultivated an. in.erspecific hybrids, an. 15 897 polymorphic markers within.A. hypogaea germplasm. An.addition.l 1193 markers were iden.ified that illumin.ted gen.mic re- gion. exhibitin. tetrasomic recombin.tion. Furthermore, a set of elite cultivars that make up the pedigree of US run.er germplasm were gen.typed an. used to iden.ify gen.mic region. that have un.ergon. pos- itive selection. These observation. provide key in.ights on.the in.lusion.of n.w gen.tic diversity in.culti- vated pean.t an. will in.orm the developmen. of high-resolution.mappin. population.. Due to its efficien.y, scope, an. flexibility, the n.wly developed Sn. array will be very useful for further gen.tic an. breedin. application. in.Arachis.

关键词： sin.le n.cleotide polymorphism groun.n.t Arachis hypogaea

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Resistan.e to Aspergillus flavus in.maize an. pean.t:Molecular biology, breedin., en.iron.en.al stress,an. future perspectives

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The Crop Journ.l 2015年第3期3卷 229-237页

作者： Jake C.Foun.ain.Pawan.Khera Limin. Yan. spurthi n.nayak Brian.T.Scully Robert D.Lee Zhi-Yuan.Chen.Robert C.Kemerait Rajeev K.Varshn.y Baozhu Guo Departmen. of Plan. Pathology University of Georgia Tifton GA USA In.ern.tion.l Crops Research In.titute for the Semi-Arid Tropics (ICRISAT) Hyderabad Telangana India USDA-ARS Crop Protection and Management Research Unit Tifton GA USA Huaiyin.n.rmal Un.versity School of Life Sciences USDA-ARS US Horticultural Laboratory Fort Pierce FL USA Departmen. of Crop an. Soil Scien.es University of Georgia Tifton GA USA Departmen. of Plan. Pathology an. Crop Physiology Louisiana State University Baton Rouge LA USA

The colon.zation.of maize(Zea mays L.) an. pean.t(Arachis hypogaea L.) by the fun.al pathogen.Aspergillus flavus results in.the con.amin.tion.of kern.ls with carcin.gen.c mycotoxin. kn.wn.as aflatoxin. leadin. to econ.mic losses an. poten.ial health threats to human.. The regulation.of aflatoxin.biosyn.hesis in.various Aspergillus spp. has been.exten.ively studied, an. has been.shown.to be related to oxidative stress respon.es. Given.that en.iron.en.al stresses such as drought an. heat stress result in.the accumulation.of reactive oxygen.species(ROS) within.host plan. tissues, host-derived ROS may play an.importan. role in.cross-kin.dom commun.cation.between.host plan.s an. A. flavus. Recen. techn.logical advan.es in.plan. breedin. have provided the tools n.cessary to study an. apply kn.wledge derived from metabolomic, proteomic, an. tran.criptomic studies in.the con.ext of productive breedin. population.. Here, we review the curren. un.erstan.in. of the poten.ial roles of en.iron.en.al stress, ROS, an. aflatoxin.in.the in.eraction.between.*** an. its host plan.s, an. the curren. status in.molecular breedin. an. marker discovery for resistan.e to A. flavus colon.zation.an. aflatoxin.con.amin.tion.in.maize an. pean.t. We will also propose future direction. an. a workin. model for con.in.in. research efforts lin.in. en.iron.en.al stress toleran.e an. aflatoxin.con.amin.tion.resistan.e in.maize an. pean.t.

关键词： Host resistan.e Molecular breedin. Aflatoxin con.amin.tion Reactive oxygen species ROS

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