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Northern Leaf Blight Resistance in Maize: Benefits, Costs, and High-Throughput Phenotyping- [electronic resource]
Northern Leaf Blight Resistance in Maize: Benefits, Costs, and High-Throughput Phenotyping- [electronic resource]
상세정보
- 자료유형
- 학위논문파일 국외
- 최종처리일시
- 20240214101636
- ISBN
- 9798380316323
- DDC
- 630
- 서명/저자
- Northern Leaf Blight Resistance in Maize: Benefits, Costs, and High-Throughput Phenotyping - [electronic resource]
- 발행사항
- [S.l.]: : Cornell University., 2023
- 발행사항
- Ann Arbor : : ProQuest Dissertations & Theses,, 2023
- 형태사항
- 1 online resource(170 p.)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
- 주기사항
- Advisor: Nelson, Rebecca.
- 학위논문주기
- Thesis (Ph.D.)--Cornell University, 2023.
- 사용제한주기
- This item must not be sold to any third party vendors.
- 사용제한주기
- This item must not be added to any third party search indexes.
- 초록/해제
- 요약Resistance breeding is an effective and sustainable disease management strategy, but sometimes can be associated with yield costs and other trade-offs. I measured the effects (direction and magnitude) of northern leaf blight (NLB) resistance in maize at the locus level using near isogenic lines (NILs), and at the population level using a population of diverse hybrids. I also conducted a genome-wide association study (GWAS) for NLB resistance and other traits on the diverse hybrid population and used drone-based high-throughput phenotyping for resistance and yield. I found that locus-driven NLB resistance may have yield penalties in the homozygous state and that is traded-off with northern leaf spot (NLS) susceptibility. I also identified two multiple disease resistant (MDR) NILs for NLB, anthracnose top dieback (ATD), and anthracnose stalk rot (ASR). At the population level, NLB resistance was not associated with yield penalties in the absence of disease. Significant GWAS hits were found for root lodging, stalk lodging, and grain moisture under NLB pressure, but not for NLB. The drone-derived vegetation indices that I extracted from field plots can be used potentially as surrogates or indirect selection criteria for resistance and yield. However, this high-throughput phenotyping technology needs improvement under realistic and typical field conditions of breeding trials. This research has implications for the optimization of maize breeding programs.
- 일반주제명
- Agriculture.
- 일반주제명
- Genetics.
- 일반주제명
- Plant pathology.
- 키워드
- Drone
- 키워드
- Hybrids
- 키워드
- Trade-offs
- 기타저자
- Cornell University Plant Breeding
- 기본자료저록
- Dissertations Abstracts International. 85-03B.
- 기본자료저록
- Dissertation Abstract International
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520240214101636
■006m o d
■007cr#unu||||||||
■020 ▼a9798380316323
■035 ▼a(MiAaPQ)AAI30631789
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a630
■1001 ▼aMoreta Mejia, Danilo Eduardo.▼0(orcid)0000-0001-6866-9200
■24510▼aNorthern Leaf Blight Resistance in Maize: Benefits, Costs, and High-Throughput Phenotyping▼h[electronic resource]
■260 ▼a[S.l.]:▼bCornell University. ▼c2023
■260 1▼aAnn Arbor :▼bProQuest Dissertations & Theses, ▼c2023
■300 ▼a1 online resource(170 p.)
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-03, Section: B.
■500 ▼aAdvisor: Nelson, Rebecca.
■5021 ▼aThesis (Ph.D.)--Cornell University, 2023.
■506 ▼aThis item must not be sold to any third party vendors.
■506 ▼aThis item must not be added to any third party search indexes.
■520 ▼aResistance breeding is an effective and sustainable disease management strategy, but sometimes can be associated with yield costs and other trade-offs. I measured the effects (direction and magnitude) of northern leaf blight (NLB) resistance in maize at the locus level using near isogenic lines (NILs), and at the population level using a population of diverse hybrids. I also conducted a genome-wide association study (GWAS) for NLB resistance and other traits on the diverse hybrid population and used drone-based high-throughput phenotyping for resistance and yield. I found that locus-driven NLB resistance may have yield penalties in the homozygous state and that is traded-off with northern leaf spot (NLS) susceptibility. I also identified two multiple disease resistant (MDR) NILs for NLB, anthracnose top dieback (ATD), and anthracnose stalk rot (ASR). At the population level, NLB resistance was not associated with yield penalties in the absence of disease. Significant GWAS hits were found for root lodging, stalk lodging, and grain moisture under NLB pressure, but not for NLB. The drone-derived vegetation indices that I extracted from field plots can be used potentially as surrogates or indirect selection criteria for resistance and yield. However, this high-throughput phenotyping technology needs improvement under realistic and typical field conditions of breeding trials. This research has implications for the optimization of maize breeding programs.
■590 ▼aSchool code: 0058.
■650 4▼aAgriculture.
■650 4▼aGenetics.
■650 4▼aPlant pathology.
■653 ▼aDrone
■653 ▼aHybrids
■653 ▼aTrade-offs
■653 ▼aDisease management
■653 ▼aMultiple disease resistant
■690 ▼a0473
■690 ▼a0369
■690 ▼a0480
■71020▼aCornell University▼bPlant Breeding.
■7730 ▼tDissertations Abstracts International▼g85-03B.
■773 ▼tDissertation Abstract International
■790 ▼a0058
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16934636▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
■980 ▼a202402▼f2024
