scholarly journals Developmental Traits Affecting Low-temperature Tolerance Response in Near-isogenic Lines for the Vernalization Locus Vrn-A1 in Wheat (Triticum aestivum L. em Thell)

2002 ◽  
Vol 89 (5) ◽  
pp. 579-585 ◽  
Author(s):  
A. E. LIMIN
Keyword(s):  
Triticum Aestivum ◽  
Low Temperature ◽  
Triticum Aestivum L ◽  
Temperature Tolerance ◽  
Near Isogenic Lines ◽  
Isogenic Lines ◽  
Low Temperature Tolerance ◽  
Tolerance Response ◽  
Developmental Traits

Morphological and cytological characters associated with low-temperature tolerance in wheat (Triticum aestivum L. em Thell.)

2000 ◽  
Vol 80 (4) ◽  
pp. 687-692 ◽  
Author(s):  
A. E. Limin ◽  
D. B. Fowler
Keyword(s):  
Triticum Aestivum ◽  
Low Temperature ◽  
Stress Tolerance ◽  
Cell Size ◽  
Plant Morphology ◽  
Triticum Aestivum L ◽  
Temperature Tolerance ◽  
Leaf Length ◽  
Low Temperature Tolerance ◽  
Highly Correlated

Attempts to associate morphological or cytological characters with low-temperature (LT) tolerance in wheat (Triticum aestivum L. em. Thell.) and other members of the Triticeae group have met with ambiguous or contradictory results. Consequently no single character has emerged that can be considered a reliable predictor of LT tolerance. Twenty-six winter wheat cultivars of diverse origin were analyzed to determine the association among leaf length, width, area and cell size (guard cell length) and their association with LT stress tolerance. Measurements were made on plants grown at 4 °C and at 17 °C to determine if expression of LT tolerance associated characters was temperature dependent. At 4 °C, all individual leaf characters measured, including cell size, were very highly correlated with LT tolerance and with each other. Undisturbed plant height was not significantly correlated with LT tolerance until 5 wk of growth at 4 °C and reached its highest correlation at 10 wk when the plants were on average at their most prostrate state of growth. Growth at 17 °C resulted in much weaker relationships among all characters. At 4 °C short narrow leaves and small cell size were the best indicators of LT stress tolerance. Prostrate growth habit of plants grown at LT was also a good indicator of plant LT tolerance, but measurements of this character did not improve prediction equations based on leaf characters and cell size. Key words: Low-temperature tolerance, plant morphology, cell size, leaf characteristics, Triticum aestivum

LOW-TEMPERATURE TOLERANCE OF OCTOPLOID TRITICALE AND ITS PARENTAL SPECIES GROWN IN SOUTHERN ONTARIO

1984 ◽  
Vol 64 (3) ◽  
pp. 451-456 ◽  
Author(s):  
V. W. POYSA ◽  
C. J. KNOBLAUCH ◽  
B. D. McKERSIE ◽  
E. REINBERGS
Keyword(s):  
Triticum Aestivum ◽  
Low Temperature ◽  
Secale Cereale ◽  
Triticum Aestivum L ◽  
Temperature Tolerance ◽  
Intergeneric Hybridization ◽  
Southern Ontario ◽  
Low Temperature Tolerance ◽  
Secale Cereale L ◽  
Octoploid Triticale

The low-temperature tolerance of 25 octoploid triticale (× Triticosecale Wittmack) lines and their five wheat (Triticum aestivum L. em. Thell) and five rye (Secale cereale L.) parental cultivars was evaluated in controlled freezing tests following field acclimation in southern Ontario. The average LT50 rating of triticale was 1–2 °C inferior to that of wheat and rye. Triticale synthesized from very hardy rye did not have better levels of hardiness than triticale from less hardy rye. The raw primary octoploid triticale lines were generally less cold tolerant than their hardy wheat parents. The LT50 rating of triticale was not significantly correlated with the LT50 rating of either the wheat or the rye parent.Key words: Triticum aestivum L. em. Thell., Secale cereale L., cold hardiness, intergeneric hybridization

scholarly journals The Relationships between Development and Low Temperature Tolerance in Barley Near Isogenic Lines Differing for Flowering Behavior

2015 ◽  
Vol 56 (12) ◽  
pp. 2312-2324 ◽  
Author(s):  
Alfonso Cuesta-Marcos ◽  
María Muñoz-Amatriaín ◽  
Tanya Filichkin ◽  
Ildikó Karsai ◽  
Ben Trevaskis ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Tolerance ◽  
Near Isogenic Lines ◽  
Isogenic Lines ◽  
Low Temperature Tolerance

Use of near-isogenic lines to precisely map and validate a major QTL for grain weight on chromosome 4AL in bread wheat (Triticum aestivum L.)

2019 ◽  
Vol 132 (8) ◽  
pp. 2367-2379 ◽  
Author(s):  
Panfeng Guan ◽  
Na Di ◽  
Qing Mu ◽  
Xueyi Shen ◽  
Yongfa Wang ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Bread Wheat ◽  
Triticum Aestivum L ◽  
Grain Weight ◽  
Near Isogenic Lines ◽  
Isogenic Lines ◽  
Major Qtl
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