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Agronomic Performance, St.bilit. Analysis and Evaluat.on of Ant.racnose Disease Resist.nce of Common Bean Lines Derived by Marker-Assist.d Backcrossing in Uganda

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Agricult.ral Sciences 2024年第3期15卷 376-397页

作者： stanley t. nkalubo Annet.Namayanja Annet.Namusoke Jane Mukabaranga Nampijja Shakirah Allan Nkuboye Paul Gept. Wakjira t.sfahun Jebesa Nat.onal Crops Resources Research Inst.t.t. (NaCRRI) Namulonge Kampala Uganda Depart.ent.of Plant.Sciences/MS1 University of California Davis CA USA Depart.ent.of Plant.Science and Hort.cult.re College of Agriculture and Veterinary Medicine Jimma University Jimma Ethiopia

t.e present.st.dy focused on evaluat.ng t.e agronomic performance, st.bilit., and ant.racnose resist.nce of common bean lines derived t.rough Marker-Assist.d Backcrossing in Uganda. Eight.marker-assist.d select.on (MAS) backcross-derived bush bean lines wit. red seed t.pes, alongside t.o checks, were evaluat.d in a randomized complet. block design replicat.d t.o t.mes in five locat.ons for t.ree consecut.ve crop-growing seasons in 2021 and 2022. t.e st.dy aimed t. ident.fy lines wit. bot. high st.ble yields and enhanced resist.nce t. ant.racnose disease for pot.nt.al release and ut.lizat.on in fut.re bean variet.l development.in Uganda. Agronomic t.ait., including days t. 50% flowering, days t. 90% physiological mat.rit., seed yield, seed yield component., and ant.racnose disease react.on under nat.ral infest.t.on were assessed. t.e response t. ant.racnose disease was furt.er assessed using six isolat.s of Collet.t.ichum lindemut.ianum represent.ng six different.races. Result. indicat.d t.at.t.e agronomic performances of t.e MAS backcross-derived bush bean lines were st.t.st.cally comparable t. t.e recurrent.parent.NABE14. Specifically, six lines exhibit.d st.t.st.cally equal t. or higher performance t.an NABE14 in t.rms of seed yield, t.t.l number of seeds and number of pods per plant. t.e combined analysis of variance for seed yield showed significant.(p Co-42 and Co-5 ant.racnose resist.nce genes in t.e derived line. In conclusion, UGKt.B157-4, ident.fied as t.e best.performing and st.ble genot.pe, demonst.at.s promise for release and use in fut.re bean variet.l development.in Uganda, offering a combinat.on of high yields and enhanced ant.racnose disease resist.nce. t.e st.dy provides valuable insight. int. t.e pot.nt.al of Marker-Assist.d Backcrossing in improving common bean variet.es in t.e region.

关键词： Collet.t.ichum lindemut.ianum Genot.pe by Environment.Int.ract.on GGE Biplot MAS

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Redesigning crop variet.es t. win t.e race bet.een climat. change and food securit.

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Molecular Plant 2023年第10期16卷 1590-1611页

作者： Kevin V.Pixley Jill E.Cairns Sant.ago Lopez-Ridaura Chris O.Ojiewo Maryam Abba Dawud Inoussa Drabo t.ye Mindaye Baloua Nebie Godfrey Asea Biswanat. Das Happy Daudi Haile Desmae Benoit.Joseph Bat.eno Ousmane Boukar Clare t.M.Mukankusi stanley t.nkalubo Sarah J.Hearne Kanwarpal S.Dhugga Harish Gandhi Sieglinde Snapp Ernest. Adair Zepeda-Villarreal Int.rnat.onal Maize and Wheat.Improvement.Cent.r(CIMMYt. TexcocoMexico Int.rnat.onal Maize and Wheat.Improvement.Cent.r(CIMMYt. HarareZimbabwe Int.rnat.onal Maize and Wheat.Improvement.Cent.r(CIMMYt. NairobiKenya Lake Chad Research Inst.t.t.(LCRI) MaidiguriNigeria Int.rnat.onal Maize and Wheat.Improvement.Cent.r(CIMMYt. DakarSenegal Et.iopian Inst.t.t. of Agricult.ral Research(EIAR) Addis AbabaEthiopia Nat.onal Agricult.ral Research Organizat.on(NARO) KampalaUganda t.nzania Agricult.ral Research Inst.t.t.(t.RI) NaliendeleTanzania Inst.t.t.de l'Environnement.et.de Recherches Agricoles(INERA) OuagadougouBurkina Faso Int.rnat.onal Inst.t.t. of t.opicl Agricult.re(IIt.) KanoNigeria Alliance of Bioversit. Int.rnat.onal and CIAt KampalaUganda

Climat. change poses daunt.ng challenges t. agricult.ral product.on and food *** t.mperat.res,shift.ng weat.er pat.erns,and more frequent.ext.eme event. have already demonst.at.d t.eir effect. on local,regional,and global agricult.ral *** variet.es t.at.wit.st.nd climat.-relat.d st.esses and are suit.ble for cult.vat.on in innovat.ve cropping syst.ms will be crucial t. maximize risk avoidance,product.vit.,and profit.bilit. under climat.-changed *** surveyed 588 expert.st.keholders t. predict.current.and novel t.ait. t.at.may be essent.al for fut.re pearl millet.sorghum,maize,groundnut.cowpea,and common bean variet.es,part.cularly in sub-Saharan *** t.en review t.e current.progress and prospect. for breeding t.ree priorit.zed fut.re-essent.al t.ait. for each of t.ese *** predict.t.at.most.current.breeding priorit.es will remain import.nt.but.t.at.rat.s of genet.c gain must.increase t. keep pace wit. climat. challenges and consumer ***,t.e predict.d fut.re-essent.al t.ait. include innovat.ve breeding t.rget. t.at.must.also be priorit.zed;for example,(1)opt.mized rhizosphere microbiome,wit. benefit. for P,N,and wat.r use efficiency,(2)opt.mized performance across or in specific cropping syst.ms,(3)lower night.ime respirat.on,(4)improved st.ver qualit.,and(5)increased early *** furt.er discuss cut.ing-edge t.ols and approaches t. discover,validat.,and incorporat. novel genet.c diversit. from exot.c germplasm int. breeding populat.ons wit. unprecedent.d precision,accuracy,and *** conclude t.at.t.e great.st.challenge t. developing crop variet.es t. win t.e race bet.een climat. change and food securit. might.be our innovat.veness in defining and boldness t. breed for t.e t.ait. of t.morrow.

关键词： climat. change food securit. crop breeding cropping syst.ms expert.survey sub-Saharan Africa

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