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ARS Home » Plains Area » Fargo, North Dakota » Edward T. Schafer Agricultural Research Center » Cereal Crops Improvement Research » Research » Publications at this Location » Publication #410367
Research Project: Improvement of Disease and Pest Resistance in Barley, Durum, Oat, and Wheat Using Genetics and Genomics

Location: Cereal Crops Improvement Research

Title: Identification of QTLs associated with yield components, agronomic traits, and kernel parameters in hard red spring wheat

Author
item KUMARI, POOJA - North Dakota State University
item Peters Haugrud, Amanda
item Xu, Steven
item ZHANG, QIJUN - North Dakota State University
item GREEN, ANDREW - North Dakota State University
item Faris, Justin

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 11/14/2023
Publication Date: 1/12/2024
Citation: Kumari, P., Peters Haugrud, A.R., Xu, S.S., Zhang, Q., Green, A., Faris, J.D. 2024. Identification of QTLs associated with yield components, agronomic traits, and kernel parameters in hard red spring wheat. Meeting Abstract. Poster No. PE0379.

Interpretive Summary:

Technical Abstract: Wheat (Triticum aestivum L.) is one of the most widely consumed cereal crops in the world, and there is an increasing demand expected in the future. To meet this demand and to cope with a changing climate involving hotter temperatures, breeding for high-yielding, early-maturing varieties is a top priority. Grain yield in wheat is determined not only by the number of kernels per unit area but also by kernel size and weight. Here, we developed a biparental population from two hard red spring wheat (HRSW) varieties ‘Faller’ and ‘Jinqiang 5’ with distinct differences in grain yield and maturity. A subset of 190 recombinant inbred lines (RILs) was evaluated for 15 different yield-component traits (YCTs) including days to heading (DTH), days to physiological maturity, plant height, thousand kernel weight (TKW), and other kernel parameters such as kernel width (KW), kernel area (KA), and kernel circularity in two greenhouse (GH) experiments and one field season. The population was genotyped using the Illumina iSelect 90k wheat SNP array, and a total of 1,939 polymorphic SNPs were obtained and used to develop genetic linkage maps. A total of 12 QTLs associated with YCTs were identified in the GH experiments. One QTL on chromosome 1B was associated with TKW, KA, and KW and explained 15-19% of phenotypic variation across the two GH experiments. Jinqiang 5 is very early heading with an average DTH of 37 days, and RILs that headed in as few as 29 days were identified. Associated with the extremely early heading was a QTL that explained 10.1 - 13.2% of phenotypic variation on chromosome 7B with earliness derived from Jinqiang 5. Both the 1B and 7B QTLs are considered novel for their respective traits. Data collected from the first field season (summer 2023) is currently being analyzed to determine if these QTLs are expressed under field conditions. These and other novel loci identified in the Faller × Jinqiang 5 population may be useful for improving wheat yields and productivity under changing climates.