VERNALIZATION AND PHOTOPERIOD RESPONSE CHARACTERISTICS OF A RECIPROCAL SUBSTITUTION SERIES OF RESCUE AND CADET HARD RED SPRING WHEAT

1985 ◽  
Vol 65 (1) ◽  
pp. 33-39 ◽  
Author(s):  
DAVID J. MAJOR ◽  
E. D. P. WHELAN
Keyword(s):  
Triticum Aestivum ◽  
Triticum Aestivum L ◽  
Photoperiod Sensitivity ◽  
Day Length ◽  
Photoperiod Response ◽  
Vernalization Response ◽  
Vegetative Phase ◽  
Hard Red Spring Wheat ◽  
Response Characteristics ◽  
Chromosome 3B

A reciprocal substitution series between Rescue and Cadet hard red spring wheats was used to identify chromosomal differences for vernalization response, basic vegetative phase, and photoperiod sensitivity. A greenhouse technique was used to provide estimates of these variables. Genes affecting vernalization were found on chromosomes 2A, 5A and 5B. Chromosomes 2A and 5B also affected the length of the basic vegetative phase. A gene on chromosome 3B affected photoperiod sensitivity.Key words: Day length, Triticum aestivum L., basic vegetative phase

scholarly journals Vernalization Response of Some Winter Wheat Cultivars (Triticum aestivum L.)

2012 ◽  
Vol 38 (No. 3-4) ◽  
pp. 97-103 ◽  
Author(s):  
J. Košner ◽  
K. Pánková
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Agronomic Traits ◽  
Triticum Aestivum L ◽  
Vernalization Requirement ◽  
Photoperiod Response ◽  
Vernalization Response ◽  
Multiple Alleles ◽  
Winter Wheat Cultivars ◽  
The Given

For 17 cultivars of winter wheat (Triticum aestivum L.) different vernalization and photoperiod responses were detected. The effect of photoperiod sensitivity was not significantly changed by vernalization; different vernalization responses were probably due to the presence of multiple alleles at Vrn loci. The delay in heading depended on the vernalization deficit exponentially: y = Parameter (1) + (y0 – Parameter (1)) × EXP (Parameter (2) × (x – x0)). The dependence was shown to be general and significant for the given model in all the studied cultivars. Individual regressions characterised responses of cultivars to a deficit of vernalization treatment. Cluster analysis according to the characterisation obtained (full vernalization requirement, minimum vernalization requirement, insufficient vernalization and parameters of the dependence) showed the relationships between cultivars and enabled their grouping by similar profiles of vernalization, and, possibly, of photoperiod response. In individual cultivars, an attempt was made to use the model to predict performance for some agronomic traits.

Influence of photoperiod response on the expression of cold hardiness in wheat and barley

2000 ◽  
Vol 80 (4) ◽  
pp. 721-724 ◽  
Author(s):  
S. Mahfoozi ◽  
A. E. Limin ◽  
P. M. Hayes ◽  
P. Hucl ◽  
D. B. Fowler
Keyword(s):  
Triticum Aestivum ◽  
Hordeum Vulgare ◽  
Low Temperature ◽  
Cold Hardiness ◽  
Developmental Regulation ◽  
Triticum Aestivum L ◽  
Temperature Tolerance ◽  
Photoperiod Sensitivity ◽  
Photoperiod Response ◽  
Hordeum Vulgare L

Vernalization and photoperiod requirements regulate the timing of the vegetative/reproductive transition in plants. Cereals adapted to cold winter climates regulate this developmental transition mainly through vernalization requirements, which delay transition from the vegetative to the reproductive growth stage. Recent research indicates that vernalization requirements also influence the expression of low-temperature (LT) tolerance genes in cereals exposed to acclimating temperatures. The objective of the present study was to determine if LT tolerance expression was also developmentally regulated by photoperiod response. The nonhardy, short day (SD) sensitive, wheat (Triticum aestivum L. em Thell) cultivar AC Minto, the LT tolerant, highly SD sensitive barley (Hordeum vulgare L.) cultivar Dicktoo, and a barley selection with very low sensitivity to SD were subjected to 8-h (SD) and 20-h (LD) days at cold acclimating temperatures over a period of 98 d. Final leaf number (FLN) was used to measure photoperiod sensitivity and determine the vegetative/reproductive transition point. The LT tolerance of the less SD sensitive barley genotype was similar for LD and SD treatments. In contrast, a delay in the transition from the vegetative to the reproductive stage in AC Minto and Dicktoo grown under SD resulted in an increased level and/or longer retention of LT tolerance. These results support the hypothesis that not only the level, but also the duration of gene expression determines the degree of LT tolerance in cereals. Consequently, any factor that lengthens the vegetative stage, such as vernalization or photoperiod sensitivity, also increases the duration of expression of LT tolerance genes. Key words: Triticum aestivum L., Hordeum vulgare L., low-temperature tolerance, photoperiod, developmental regulation

scholarly journals Trace Elements in Western Canadian Hard Red Spring Wheat (Triticum aestivum L.): Levels and Quality Assurance

2001 ◽  
Vol 84 (6) ◽  
pp. 1953-1963 ◽  
Author(s):  
Eugene J Gawalko ◽  
Robert G Garrett ◽  
Thomas W Nowicki
Keyword(s):  
Triticum Aestivum ◽  
Trace Elements ◽  
Spring Wheat ◽  
Monitoring Program ◽  
Triticum Aestivum L ◽  
Control Measures ◽  
Canadian Prairie ◽  
Hard Red Spring Wheat ◽  
Accuracy And Precision ◽  
Major Factors

Abstract A monitoring program was conducted for trace elements in Western Canadian Hard Red Spring wheat (Triticum aestivum L.). Samples were selected from harvest survey samples submitted by producers from crop districts in Manitoba, Saskatchewan, and Alberta for 1996, 1997, and 1998 crops. The analytical quality control measures used in these surveys are described along with the results for Cd, Cu, Fe, Mn, Se, and Zn. Accuracy and precision for the analyses fell within the acceptable control limits. Year-to-year variations in grain chemistry were small for Cd, Mn, Se, and Zn, but Cu and Fe contents showed 12 and 9% decreases, respectively, over the 3 years. The overall variability for the plant-essential trace elements—Cu, Fe, Mn, and Zn—was low compared with that for Cd and Se. The spatial variation in crop chemistry across the Canadian Prairie wheat-producing region was greater than the year-to-year variations. Soil properties were major factors in controlling Cd and Se levels in grain.

Kenyon hard red spring wheat

1991 ◽  
Vol 71 (4) ◽  
pp. 1165-1168 ◽  
Author(s):  
G. R. Hughes ◽  
P. Hucl
Keyword(s):  
Triticum Aestivum ◽  
Leaf Rust ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Recurrent Parent ◽  
Breeding Method ◽  
Hard Red Spring Wheat ◽  
Wide Adaptation ◽  
Cultivar Description ◽  
The University

Kenyon hard red spring wheat (Triticum aestivum L.) possesses excellent resistance to leaf rust and stem rust. Kenyon was developed using the backcross breeding method, resulting in the recovery of the maturity and wide adaptation of its recurrent parent Neepawa. Kenyon was developed at the University of Saskatchewan. Key words: Cultivar description, leaf rust, Triticum aestivum L., spring wheat

AAC Foray red spring wheat

2015 ◽  
Vol 95 (4) ◽  
pp. 799-803 ◽  
Author(s):  
P. D. Brown ◽  
H. S. Randhawa ◽  
J. Mitchell Fetch ◽  
S. L. Fox ◽  
D. G. Humphreys ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Agronomic Performance ◽  
Head Blight ◽  
Hard Red Spring Wheat ◽  
Sitodiplosis Mosellana ◽  
Wheat Market ◽  
Market Class ◽  
Wheat Blossom Midge

Brown, P. D., Randhawa, H. S., Mitchell Fetch, J., Fox, S. L., Humphreys, D. G., Meiklejohn, M., Green, D., Wise, I., Fetch, T., Gilbert, J., McCallum, B. and Menzies, J. 2015. AAC Foray red spring wheat. Can. J. Plant Sci. 95: 799–803. AAC Foray, an orange wheat blossom midge (Sitodiplosis mosellana Géhin) tolerant hard red spring wheat (Triticum aestivum L.), combined high grain yield and good agronomic performance with excellent resistance to leaf and stem rust, and improved resistance to Fusarium head blight. AAC Foray had maturity, straw strength, and test weight similar to the check cultivars. AAC Foray is eligible for grade of the Canada Prairie Spring Red wheat market class.

AAC Elie hard red spring wheat

2016 ◽  
Vol 96 (5) ◽  
pp. 919-927
Author(s):  
R.D. Cuthbert ◽  
R.M. DePauw ◽  
R.E. Knox ◽  
A.K. Singh ◽  
T.N. McCaig ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Spring Wheat ◽  
Yellow Rust ◽  
Triticum Aestivum L ◽  
Loose Smut ◽  
Common Bunt ◽  
Head Blight ◽  
Hard Red Spring Wheat ◽  
Intermediate Resistance ◽  
Flour Yield

AAC Elie hard red spring wheat (Triticum aestivum L.) has grain yield and time to maturity within the range of the checks. AAC Elie has an awned spike, a low lodging score indicative of strong straw, and a short plant stature typical of a semidwarf. These traits were comparable to the check Carberry. AAC Elie expressed resistance to prevalent races of leaf and stem rust, and intermediate resistance to fusarium head blight, yellow rust, common bunt, and loose smut. Compared with the five Canada Western Red Spring checks, AAC Elie has improved flour yield, and lower flower ash. AAC Elie is eligible for grades of Canada Western Red Spring.

VERNALIZATION RESPONSES OF A SELECTED GROUP OF SPRING WHEAT (Triticum aestivum L.) CULTIVARS

1986 ◽  
Vol 66 (1) ◽  
pp. 1-9 ◽  
Author(s):  
P. E. JEDEL ◽  
L. E. EVANS ◽  
R. SCARTH
Keyword(s):  
Triticum Aestivum ◽  
Spring Wheat ◽  
Cold Treatment ◽  
Triticum Aestivum L ◽  
Plant Age ◽  
Vernalization Requirement ◽  
Vernalization Response ◽  
Rapid Induction ◽  
Greenhouse Study ◽  
Lag Period

Ten spring wheat (Triticum aestivum L.) cultivars were assessed for the pattern, duration and stability of their response to vernalization and the effect of plant age on receptivity to cold treatment. Cold treatment intervals of 0–6 wk were used to determine the patterns of response. Cajeme 71, Fielder and Pitic 62 were found to have a gradual response with the vernalization requirement satisfied after 4 or 5 wk of cold treatment. Benito, Glenlea, Marquis, and Neepawa had slight but significant responses to longer cold treatments (5–6 wk). Yecora 70, Prelude and Sinton were nonresponsive to the cold treatments. The development of the vernalization responses in Cajeme 71 and Pitic 62 was assessed with cold treatments of 0, 1, 4, 8, 16 and 32 days in a greenhouse study. The pattern of response consisted of a lag period, a period of rapid induction, and finally a plateau when the vernalization requirement was filled. Intermediate temperature treatments of 1–6 days at 15 °C stabilized the vernalization response induced by 2 wk of cold treatment (4 °C) in Fielder and Pitic 62 and by 6 wk of cold treatment in Cajeme 71. Pitic 62 was responsive to cold treatments at ages 0 and 7 days, with the responsiveness decreasing with increasing age. Neepawa, at the ages tested, was relatively non-responsive to the cold treatments.Key words: Wheat (spring), vernalization response, temperature, plant age

Inflorescence development of semidwarf and standard height wheat cultivars in different photoperiod and nitrogen treatments

1973 ◽  
Vol 51 (5) ◽  
pp. 941-956 ◽  
Author(s):  
David P. Holmes
Keyword(s):  
Triticum Aestivum ◽  
Shoot Apex ◽  
Growth And Development ◽  
Triticum Aestivum L ◽  
Day Length ◽  
Wheat Cultivars ◽  
Inflorescence Development ◽  
Nitrogen Levels ◽  
Nitrogen Treatments ◽  
Phosphorus Levels

A comparative study was made of the growth and development of the shoot apex/inflorescence in two contrasting spring wheat (Triticum aestivum L.) cultivars: Marquis—a standard height, day-length-sensitive type; and Pitic 62—a semidwarf, Norin 10 derivative with relatively low day-length sensitivity. The effects of 8-, 12-, 16-, 20-, and 24-h photoperiods and of two nitrogen levels in 12 and 20 h on both cultivars were determined, as well as those of two phosphorus levels on Marquis in 20 h.Apical primordium production continued for a longer duration in Pitic than in Marquis, and the initiation of spikelet primordia was delayed. Spikelet development was more synchronous in Pitic than in Marquis in all treatments. Apical spikelet formation always coincided in both cultivars with the initiation of rachis internode extension. Inflorescence development after termination of spikelet primordia formation was as fast in Pitic as in Marquis (or faster in short photoperiods).In general, increasing N increased the rate and duration of primordium production (apical spikelet formation occurring later at high N), and delayed inflorescence development and extension. These effects were more pronounced in Pitic, resulting in much greater N responses for spikelet and grain numbers per spike, and for grain yields per spike. Effects of high P were similar to those of high N. Increasing photoperiod increased the rate, but decreased the duration of primordium production, and accelerated the development and the extension growth of the inflorescence.The results are discussed in relation to a postulated involvement of endogenous gibberellins and inhibitors in the regulation of inflorescence growth and development.

Sign in / Sign up

Export Citation Format

Share Document