Inheritance of kernel hardness in five spring wheat crosses

1991 ◽  
Vol 71 (1) ◽  
pp. 179-181 ◽  
Author(s):  
R. J. Baker ◽  
K. A. Sutherland

Significant variation among grinding times of F3-derived F4 lines of five crosses indicated that there were genetic differences in hardness among five spring wheat (Triticum aestivum L.) cultivars. Bimodal distributions indicated a two-gene difference between a very hard and soft cultivar and a one-gene difference between a hard and soft cultivar. Key words: Triticum aestivum, kernel hardness, grinding time

1987 ◽  
Vol 67 (1) ◽  
pp. 235-237 ◽  
Author(s):  
D. R. SAMPSON ◽  
D. W. FLYNN

Kernel hardness, measured as grinding time, of seed from plant-rows extracted from the spring wheat (Triticum aestivum L.) parents of a previous study, showed that Cal 3, thought to have had medium-hard kernels, was in fact a mixture of soft and hard plants plus a few intermediates. This explains unexpected results. Parents Cal 9, Cal 25 and Cal 13 were each homogeneous for plants with soft, hard and very hard kernels, respectively.Key words: Wheat, Triticum aestivum L., medium-hard kernels, grinding time, genetics


1989 ◽  
Vol 69 (4) ◽  
pp. 1245-1250 ◽  
Author(s):  
R. M. DE PAUW ◽  
T. F. TOWNLEY-SMITH ◽  
T. N. McCAIG ◽  
J. M. CLARKE ◽  
J. G. McLEOD ◽  
...  

HY355, white spring wheat (Triticum aestivum L.) combines high grain yield, normal height and photoperiod insensitivity. HY355 is heterogeneous for kernel hardness with 55% of the breeder lines rated hard and 45% rated soft. HY355 is the first registered wheat cultivar eligible for grades of Canada Prairie Spring (white). It received a 2-yr interim registration on 6 May 1988.Key words: Wheat (spring), cultivar description


2008 ◽  
Vol 88 (5) ◽  
pp. 873-883 ◽  
Author(s):  
M. A. Matus-Cádiz ◽  
C. J. Pozniak ◽  
P. Hucl

Kernel hardness, one of the most important factors in determining the end-use suitability of wheat (Triticum aestivum L.), is largely influenced by puroindoline proteins a (PINA) and b (PINB). Soft texture is wildtype (Pina-D1a/Pinb-D1a) with hard texture being determined by either Pina-D1 gene deletion or point mutations in Pinb-D1a. The objectives of this study were to determine kernel hardness indices (HI) and Pina-D1/Pinb-D1 allelic diversity in a diverse set of 81 Canadian (representing eight wheat classes) and 49 US hard spring wheat varieties. Varieties were grouped into two experimental sets grown in replicated trials in 2004–2006 at Saskatoon, SK. Variation existed among varieties with HI means ranging from 21.7 (CDC Zorba) to 72.7 (AC Morse) in exp. 1 and from 25.0 (HY320) to 66.1 (Norlander) in exp. 2. Only AC Andrew, CDC Zorba, and Red Fife were soft kernel textured and carried the wildtype Pina-D1a/Pinb-D1a alleles. The majority of Canadian varieties were Pina-D1a/Pinb-D1b (69%), while a greater frequency of US varieties was Pina-D1b/Pinb-D1a (55%). Only four varieties, all from Quebec-based breeding programs, carried the Pinb-D1c allele. On average, varieties with the Pina-D1b allele had significantly harder kernels than those carrying the Pinb-D1b mutation. Durum wheat (T. turgidum L. var durum) varieties, included as hard-kernelled controls, possessed significantly harder kernels (average HI = 71.2) than spring wheat varieties with Pina-D1b (65.3). Varieties carrying Pina-D1b (null PINA) were harder than those carrying hardness mutations at the Pinb-D1 locus, but considerable overlap in hardness was evident among genotypic classes. This work represents the first extensive Pin genotyping combined with HI phenotyping survey of Canadian wheat varieties, which is expected to aid breeders in understanding how Pina-D1/Pinb-D1 allele composition is currently associated with kernel hardness across Canadian wheat classes. Key words: Triticum aestivum, kernel hardness, puroindolines


1998 ◽  
Vol 78 (1) ◽  
pp. 171-173 ◽  
Author(s):  
P. Hucl

Increased crop competitiveness may complement existing weed control methods. The objective of this research was to establish whether spring wheat (Triticum aestivum L.) genotypes with contrasting competitive abilities respond differently to weed control levels. Four sibling genotypes differing in competitive ability were grown under simulated weedy conditions and subjected to four weed control levels. The competitive genotypes were superior to the less-competitive genotypes in grain yield under weedy and partially weedy conditions. Key words: Triticum aestivum L., competition, weed control, genotype × weedcontrol interaction


2000 ◽  
Vol 80 (3) ◽  
pp. 665-667 ◽  
Author(s):  
Hugh J. Beckie ◽  
Sakti Jana

Resistance in wild oat (Avena fatua L.) to triallate was monitored from 1996 to 1998 in plots of continuous spring wheat (Triticum aestivum L.) and wheat-fallow, with or without triallate applied from 1979 to 1997. Resistance in wild oat occurred after 18 yr where triallate was applied annually in continuous wheat, but not where triallate was applied 10 times in a wheat-fallow rotation over the same period. No resistance was detected in the continuous wheat or wheat-fallow plots where no herbicide was applied. Key words: Herbicide resistance, wild oat, triallate


2002 ◽  
Vol 82 (2) ◽  
pp. 411-413 ◽  
Author(s):  
Pierre Hucl ◽  
Maria Matus-Cádiz

Early-maturing spring wheat germplasm lines CDC EMDR-4, CDC EMDR-9, and CDC EMDR-14 have high levels of seed dormancy. Their agronomic performance is comparable to that of the cultivar Columbus. These three lines had similar grain protein concentration and kernel hardness relative to the check cultivars, except CDC EMDR-4, which had a soft endosperm texture. Key words: Triticum aestivum L., germplasm, seed dormancy, pre-harvest sprouting resistance


2008 ◽  
Vol 88 (2) ◽  
pp. 347-350 ◽  
Author(s):  
T. F. Townley-Smith ◽  
E. M. Czarnecki

AC Domain hard red spring wheat (Triticum aestivum L.) exhibited high levels of pre-harvest sprouting tolerance and is adapted to the Canadian prairies. In Manitoba, the grain yield of AC Domain was 3.4 to 7.4% higher than the check cultivars, while in Saskatchewan it was 3.3 to 8% lower. AC Domain had shorter, stronger straw than the check cultivars. AC Domain is eligible for all grades of the Canada Western Red Spring (CWRS) wheat class. Key words: Triticum aestivum L., cultivar description, grain yield and protein, resistance to pre-harvest sprouting, leaf and stem rust


1993 ◽  
Vol 73 (4) ◽  
pp. 1091-1094 ◽  
Author(s):  
T. F. Townley-Smith ◽  
E. M. Czarnecki ◽  
A. B. Campbell ◽  
P. L. Dyck ◽  
D. J. Samborski

Minto hard red spring wheat (Triticum aestivum L.) combines excellent resistance to leaf rust and stem rust with higher yield potential than Neepawa or Katepwa. Registered 29 January 1991, it is best adapted to the southern portions of the wheat-growing area of the Canadian prairies. Breeder seed of AC Minto will be maintained by the Agriculture Canada Experimental Farm, Indian Head, Saskatchewan. Key words: Cultivar description, spring wheat, Triticum aestivum L.


1992 ◽  
Vol 72 (1) ◽  
pp. 229-233 ◽  
Author(s):  
K. G. Briggs ◽  
K. Kutschera ◽  
S. Kibite

Cutler spring wheat (Triticum aestivum L.) is a very early maturing, semidwarf, spring wheat with special adaptation to the Parkland region of the Western Prairies, and is suitable for production where early maturity is a prime consideration and where leaf rust rarely occurs. It received registration No. 3356 and is eligible for grades of Canada Prairie Spring (red).Key words: Triticum aestivum L., spring wheat, early maturity, cultivar description


2007 ◽  
Vol 87 (4) ◽  
pp. 895-900 ◽  
Author(s):  
R. M. DePauw ◽  
R. E. Knox ◽  
J. M. Clarke ◽  
F. R. Clarke ◽  
M. R. Fernandez ◽  
...  

In 2001–2003, cooperative testing Snowhite475 hard white spring wheat (Triticum aestivum L.) yielded grain in the range of the checks and was 3.4 and 3.3 d earlier maturing than AC Vista and AC Crystal, respectively. Snowhite475 had heavier test weight than AC Vista and larger seed size than AC Crystal and AC2000. Snowhite475 had higher protein content than the checks except 5701PR. It yielded more flour and had higher Agtron flour colour values than AC Crystal and AC Vista. Snowhite475 had intermediate kernel hardness, combined with yellow alkaline and white salted noodle colour and textural attributes better than AC Crystal, AC2000 and Snowbird. Key words: Triticum aestivum L., cultivar description, grain yield, maturity, milling properties, noodles


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