Page 28 - TriSociety Virtual Event

Abstracts Click on abstract thumbnail to see the poster.

Session 1. Invited keynote speaker Guelph, ON N1G 2W1, Canada. of Agricultural Food and Nutritional Science,
University of Alberta, Edmonton, AB T6G 2P5,
1. Crop improvement for an uncertain Abstract withdrawn Canada; (R.D.) Agriculture and Agri-Food
future Canada, Lethbridge Research and Develop­
E C BRUMMER Plant Breeding Center, Plant 3. Identification of quantitative trait loci ment Centre, Lethbridge, AB T1J 4B1 Canada;
Sciences Department, University of California, associated with partial resistance to Fusa­ (C.W.H.) Morden Research and Development
Davis, One Shields Ave., Davis, CA 95616, USA. rium root rot and wilt caused by Fusarium Centre, Agriculture and Agri-Food Canada, 101
graminearum in field pea Route 100, Morden, MB R6M 1Y5 Canada; (D.S.)
The world faces a raf of challenges and many L F WU R FREDUA­AGYEMAN S F HWANG Department of Agricultural Food and Nutrition­
of them impinge directly on agricultural pro­ AND S E STRELKOV Department of Agricultur­ al Science, University of Alberta, Edmonton,
duction climate variability population grow­ al, Food and Nutritional Science, University of AB T6G 2P5, Canada; (H.R.) Agriculture and
th soil deterioration water limitation and Alberta, Edmonton, ABT6G 2P5, Canada. Agri-Food Canada, Lethbridge Research and
urban expansion to name five The increase Development Centre, Lethbridge, AB T1J 4B1
in crop productivity over the past several deca­ Fusarium root rot caused by a complex of Canada.
des has been substantial but can it continue? Fusarium spp is a ma or disease afecting
Plant breeding programs have always looked field pea production While the development Stripe rust caused by Puccinia striiformis
for and adopted new tools to make genetic of genetic resistance represents one of the Westend f sp tritici Erikss is one of the most
gains larger and faster Today the array of te­ most promising approaches for root rot man­ devastating diseases of wheat (Triticum aes­
chnologies that could improve the delivery of agement no sources of complete resistance tivum L.) globally Exploring and utilising new
better cultivars is large and growing From ge­ have been identified The aim of this study sources of resistance is essential for breeding
nomics­assisted selection to high­throughput was to detect quantitative trait loci (QTL) resistant wheat cultivars The Canadian spring
phenotyping from precisely edited genes to conferring partial resistance to root rot and wheat cultivar 'AAC Innova' possesses an
advanced analytical methods and superior wilting caused by Fusarium graminearum a efective level of stripe rust resistance under
experimental designs the opportunity for con­ ma or component of this pathogen complex field conditions although the genetic resis­
tinued improvement seems likely At the same An F recombinant inbred line (RIL) population tance is unknown To dissect the genetics of
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time we see a continual streamlining of crop consisting of 129 individuals derived from the resistance in 'AAC Innova' a doubled haploid
production with ever greater emphasis on cross 'Reward' (root rot susceptible) x '00­ (DH) mapping population of 291 lines was
ever fewer ma or crops Paradoxically as the 2067' (root rot tolerant) was inoculated with developed from hybrids of 'AAC Innova' and
well­known benefits of crop rotation and other F. graminearum under various greenhouse the susceptible Canadian wheat cultivar 'AAC
time­tested management considerations are conditions Plants were assessed for root Proclaim' This population was tested for stripe
pushed aside new issues needing genetic rot and wilt severity in the fourth week afer rust severity in disease nurseries at Creston
solutions arise for example resistance to new inoculation The F population was genotyped British Columbia (in 2016 and 2020) and
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diseases and insect pests formerly controlled using 13 2K single nucleotide polymorphisms Lethbridge Alberta (in 2016 2017 and 2020)
by rotation I will argue that the impressive (SNPs) and 212 simple sequence repeat (SSR) and genotyped using the wheat 90K Infinium
advances in crop breeding and genetics can markers evenly distributed on seven pea iSelect SNP assay A high­density genetic map
have a larger positive impact on developing chromosomes A significant genotypic efect was constructed and consisted of 7 112 SNPs
a healthier food system and minimiZing ne­ (P<0 05) and high heritability (92 1%) indicated markers with an average marker interval of
gative externalities of agricultural production that a high proportion of the genetic variance 2 31 cM Composite interval mapping (CIM)
if concurrent reimagining of farming systems was transmitted to the progeny Seven QTL identified one ma or (QYr.lrdc-2A) and 10 minor
creates an agricultural landscape that by its for root rot severity were detected on Linkage efect QTLs (QYr.lrdc-2B.1, QYr.lrdc-2B.2, QYr.
very design prevents the emergence of pro­ Group (LG) I III IV and V including four stable lrdc-2B.3, QYr.lrdc-2B.4, QYr.lrdc-2D, QYr.lrdc-3B,
blems requiring new defensive breeding QTL identified in more than one environment QYr.lrdc-5A, QYr.lrdc-5B, QYr.lrdc-5D and QYr.
The two largest stable QTL Fg-Ps3.1 and lrdc-7D) QYr.lrdc-2A mapped to chromosome
Session 2. Student oral competi­ Fg-Ps3.2 were located on LG III and explained arm 2AL and explained up to 33 0% of the
tion: Genetics, Biotechnology, and 6 56­12 75% and 8 18­13 24% of the phenotyp­ phenotypic variance and was detected across
all environments Other QTLs were incon­
ic variance respectively The flanking markers
Breeding may contribute to marker­assisted selection in sistent and explained less than 10% of the
breeding programs for partial resistance to F. phenotypic variance 'AAC Innova' contributed
2. Genome­wide association study of soy­ graminearum stripe rust resistance alleles for most of the
bean germplasm derived from Canadian x QTLs except for QYr.lrdc-2D, QYr.lrdc-5A and QYr.
Chinese crosses to mine for unique seed­ 4. Mapping quantitative trait loci asso­ lrdc-7D, which were derived from the suscep­
yield alleles ciated with stripe rust resistance from tible parent 'AAC Proclaim' These QTLs and
C JAGODA ARACHCHIGE AND I RAJCAN Canadian wheat cultivar AAC Innova. the flanking markers identified in this study
Department of Plant Agriculture, Crop Science M FARZAND R DHARIWAL C W HIEBERT can be used for developing stripe rust resistant
Bldg., University of Guelph, 50 Stone Road East, D SPANER AND H RANDHAWA Department cultivars

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