Coleman hard red spring wheat

Muhammad Iqbal

Coleman hard red spring wheat

Muhammad Iqbal

2015, Canadian Journal of Plant Science

visibility

…

description

5 pages

link

1 file

Abstract

Spaner, D., Navabi, A., Strenzke, K., Iqbal, M. and Beres, B. 2015. Coleman hard red spring wheat. Can. J. Plant Sci. 95: 1037–1041. ‘Coleman’ hard red spring wheat is an awned, hollow-stemmed cultivar of high yield potential adapted to the wheat growing regions of western Canada. Averaged over 30 site-years, during 3 yr of testing in the Parkland Wheat Cooperative Registration Test (2010–2012), Coleman was higher yielding than Katepwa (8.5%) (P≤0.05), AC Splendor (5.8%) (P≤0.05), CDC Teal (2.1%) and CDC Osler (2%), exhibited maturity, height and lodging resistance similar to, or in the range of the checks, had higher test weights than the checks and showed good resistance to leaf, stem and stripe rust. Coleman exhibited Fusarium head blight resistance greater than and DON contamination levels lower than the check cultivars. Coleman exhibited susceptible reactions to common bunt and loose smut. End-use quality attributes of Coleman meet the specifications of the Canada Western Red S...

Pedigree and Breeding Method

The hard red spring wheat Coleman was selected from the cross ''CDC Go/3/(FRTL/NEMURA)//McKenzie'' made at the University of Alberta in the winter of 2004Á 2005. FRTL/NEMURA was a line selected for crossing from a CIMMYT scab nursery grown at the University of Alberta in 2004. FRTL is an abbreviation of 'Firetail', which derives from ''Fong Chan 3/Tyrant// Veery #9'', while NEMURA derives from the cross ''Neuzucht/Bezostaya 1//Alondra/4/Nadadores 63// Triumph/CI12406/3/Emu''. CDC Go and McKenzie (Graf et al. 2003) are two registered CWRS cultivars.

The F 1 seed from the final cross was grown in the field in Edmonton in 2005. Two hundred seeds from individual heads were advanced using single seed descent without selection for two generations at the Lacombe Field Crop Development Centre during the winter of 2005Á2006. In 2006, space-planted F 4 hill plots were grown in a stripe rust nursery where selections were made on the basis of rust reaction, plant type, maturity and straw strength. The 70 heads from selected hill plots were grown as individual rows near Lincoln, New Zealand, during the winter of 2006Á2007, where selection was based on plant type, maturity and straw strength. Seed from selected F 5 rows was grown as single entries in an unreplicated yield trial in Edmonton in 2007 and as hill plots in a stripe rust nursery near Creston, BC, Canada. Based on cumulative agronomic, disease resistance and quality data, one of the lines was evaluated as 0518* F4SSD43 in replicated yield trials at one Saskatchewan and five Alberta environments in 2008. This line was further evaluated as entry number 7 in the Parkland B Test, and subsequently evaluated as PT765 in the Parkland Wheat Cooperative Registration Test from 2010 to 2012.

Evaluation in the Parkland Wheat Cooperative Registration Test followed protocols described by Fox and McCallum (2006). The data for the test were analyzed for individual years and combined following a mixed model design in SAS (SAS Institute Inc. 2003), with environments and replications as random effects and genotypes as a fixed effect. Response of test entries and checks to several diseases was determined in specialized disease nurseries for 3 yr (2010Á2012). Seedling infection types for leaf and stem rust were assessed using prevalent races. Reactions to leaf and stem rust in the field were measured for each test year in epiphytotic nurseries near Glenlea, MB, based on the modified Cobb scale (Peterson et al. 1948). Response to loose smut was determined as described by Menzies et al. (2003). Fusarium head blight (FHB) reaction of test entries was assessed in field tests near Glenlea and Carman, MB, following artificial inoculation with FHB races (Gilbert and Woods 2006). A mixture of prevalent races was used to determine the response of Coleman to common bunt (Fox and McCallum 2006). The end-use suitability analyses were conducted at the Grain Research Laboratory, Canadian Grain Commission, Winnipeg, MB, following standard protocols of the American Association of Cereal Chemists (2000). Eligibility for the CWRS market class was determined using American Association of Cereal Chemists protocols at the Grain Research Laboratory, Canadian Grain Commission, Winnipeg, MB. We assessed Coleman's seedling and plant characteristics in a description trial grown at Edmonton during 2013 and 2014. We planted the trial each year in a randomized complete block design (RCBD) with 3 blocks. The trial included the reference cultivars CDC Go and McKenzie. All characteristics were recorded as prescribed in the Objective Description Form from the Variety Registration Office, Canadian Food Inspection Agency.

Performance

In 3 yr of testing in the Parkland Wheat Cooperative Registration Test, Coleman was higher yielding than Katepwa (8.5%) (P 50.05), AC Splendor (5.8%) (P 50.05), CDC Teal (2.1%) and CDC Osler (2%) ( Table 1). Coleman matured 2.9 d (P 50.05), 1.4 d, 1.2 d and 0.5 d later than the checks AC Splendor, Katepwa, CDC Osler and CDC Teal, respectively (Table 1). Coleman was slightly shorter (NS) than Katepwa but taller (P 50.05) than the remaining checks, while the lodging resistance was in the range of the checks.

Table 1

Agronomic data for Coleman and check cultivars in the Parkland Wheat Cooperative Registration Test (2010 to 2012) Table 2. Disease reactions for Coleman and check cultivars in the Parkland Wheat Cooperative Registration Tests (2010 Á 2012) Leaf rust rating scale based on severity: 0Á10 R, 11Á30 MR, 31Á39 I, 40Á60 MS, 60 S. Severity0percent of the stem infected with stem rust using the Modified Cobb Scale. Bunt: Rating: 0Á4.70%0R; 4.71Á11.65%0MR; 11.66Á18.60%0MR-I; 18.61Á32.50%0I; 32.51Á39.45%0I-MS; 39.46Á46.40%0MS; 46.41Á53.35% 0S; 53.36Á100%0V.

DISEASE REACTIONS

Coleman expressed a resistant reaction to the prevalent races of leaf rust and ranged from resistant to intermediate for stem rust and stripe rust in 3 yr of testing (Table 2). It was rated intermediate to susceptible for common bunt and loose smut over the 3 yr of testing ( Table 2). The FHB disease indices for Coleman were R to MR at Glenlea over the 3 testing years and I to MR at Carman; it was similar to Katepwa in 3 of 6 site years and lower than all other checks. DON levels for Coleman were lower than all of the checks (Table 2).

Table 2

Log In

Coleman hard red spring wheat

Sign up for access to the world's latest research

Abstract

Related papers

Related papers

Related topics