Inheritance of stem strength and its correlations with culm morphological traits in wheat (Triticum aestivum L.)

2011 ◽  
Vol 91 (6) ◽  
pp. 1065-1070 ◽  
Author(s):  
Jinbao Yao ◽  
Hongxiang Ma ◽  
Pingping Zhang ◽  
Lijuan Ren ◽  
Xueming Yang ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Morphological Traits ◽  
Genetic Effect ◽  
Diallel Cross ◽  
Triticum Aestivum L ◽  
Dominance Model ◽  
Narrow Sense Heritability ◽  
Stem Strength ◽  
Basal Internode ◽  
Recessive Genes

Yao, J., Ma, H., Zhang, P., Ren, L., Yang, X., Yao, G., Zhang, P. and Zhou, M. 2011. Inheritance of stem strength and its correlations with culm morphological traits in wheat ( Triticum aestivum L.). Can. J. Plant Sci. 91: 1065–1070. The genetic effect of stem strength and its correlation with culm morphological traits were investigated in a 7×7 diallel cross of wheat involving seven parents (Ningmai 8, Ningmai 9, Yangmai 5, Yangmai 9, Yangmai 11, Sumai 3, and Wangshuibai) during the crop season of 2009–2010. Significant differences were observed among genotypes for stem strength. The estimates of general combining ability (GCA) pointed out that the best general combiners for stem strength were Ningmai 8 and Yangmai 9. The additive-dominance model was adequate for stem strength, and it was controlled by the over dominance type of gene action. Ningmai 8, followed by Yangmai 5, possessed maximum recessive genes, whereas Wangshuibai had maximum dominant genes. Stem strength could be controlled by three genes with low narrow sense heritability. A statistical analysis showed that stem strength is highly significantly correlated with nine culm morphological traits except for diameter of the first basal internode.

Triton X-100 induces heritable changes of morphological traits in Triticum aestivum L.

2009 ◽  
Vol 45 (4) ◽  
pp. 495-498 ◽  
Author(s):  
K. Kh. Makhmudova ◽  
E. D. Bogdanova ◽  
E. V. Levites
Keyword(s):  
Triticum Aestivum ◽  
Morphological Traits ◽  
Triticum Aestivum L ◽  
Triton X

scholarly journals Interrelationships Among some Morphological Traits of Wheat (Triticum Aestivum L.) Cultivars using Biplot

2014 ◽  
Vol 20 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Naser Sabaghnia ◽  
Mohsen Janmohammadi
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Morphological Traits ◽  
Triticum Aestivum L ◽  
Selection Strategy ◽  
Large Contribution ◽  
Wheat Cultivars ◽  
Multiple Traits ◽  
Effective Selection ◽  
Breeding Programmes

Abstract Sabaghnia N., Janmohammadi M., 2014: Interrelationships among some morphological traits of wheat (Triticum aestivum L.) cultivars using biplot [Kviečių (Triticum aestivum L.) veislių morfologinių požymių sąveika naudojant biplot metodą]. - Bot. Lith., 20(1): 19-26. Wheat (Triticum aestivum L.) is one of the major food crops worldwide and Iran produces about 14 million tons of wheat annually. Effective interpretation of the data on breeding programmes is important at all stages of plant improvement. The cultivar by trait (CT) biplot was used for two-way wheat dataset as cultivars with multiple traits. For this propose, 13 wheat cultivars with specific characteristics were tested and the CT biplot for wheat dataset explained 65% of the total variation of the standardized data. The polygon view of CT presented for 18 different traits of wheat cultivars showed six vertex cultivars as G3, G4, G5, G9, G11 and G12. The cultivar G4 had the highest values for most of the measured traits. Generally based on vector view, ideal cultivar and ideal tester biplots, it was demonstrated that the selection of high grain yield will be performed via thousand seed weight, spike length and grain diameter. These traits should be considered simultaneously as effective selection criteria evolving high yielding wheat cultivars because of their large contribution to grain yield. The cultivars G3 and G4 could be considered for the developing of desirable progenies in the selection strategy of wheat improvement programmes

GENOTYPIC VARIATION IN SOME PHYSIOLOGICAL TRAITS IN WINTER WHEAT GROWN IN THE HUMID CONTINENTAL CLIMATE OF ONTARIO

1984 ◽  
Vol 64 (1) ◽  
pp. 113-118 ◽  
Author(s):  
I. AGUILAR-M. ◽  
L. A. HUNT
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Grain Yield ◽  
Morphological Traits ◽  
Flag Leaf ◽  
Genotypic Variation ◽  
Triticum Aestivum L ◽  
Eastern Canada ◽  
Area Index ◽  
Diffusive Resistance

Several experiments were conducted with winter wheat (Triticum aestivum L. em. Thell.) during 1978 and 1979 to characterize genotypic variation in some physiological and morphological traits, and to evaluate the magnitude of the relationships between grain yield and the various traits studied. Straw weights of cultivars grown in Eastern Canada were similar to, and harvest indices generally lower than, those reported for high yielding varieties from other countries. Highest grain weights were also lower than the upper values recorded for some cultivars in the U.K. and Mexico, and were little affected by spikelet removal in most cases. All experiments were consistent in showing highly significant correlations between grain yield and grains per square metre, straw weight, harvest index, spikes per square metre, and flag leaf area index, and significant correlations between grain yield and grain weight. Diffusive resistance of the adaxial surface of the flag leaves differed between genotypes, but correlations between diffusive resistance and yield were low and nonsignificant in all cases, with the exception of the preanthesis period in one experiment.Key words: Wheat (winter), Triticum aestivum L. em. Thell., yield, physiological-morphological traits.

Identification of quantitative trait loci for traits conferring weed competitiveness in wheat (Triticum aestivum L.)

2001 ◽  
Vol 52 (12) ◽  
pp. 1235 ◽  
Author(s):  
R. K. Coleman ◽  
G. S. Gill ◽  
G. J. Rebetzke
Keyword(s):  
Triticum Aestivum ◽  
Quantitative Trait Loci ◽  
Grain Yield ◽  
Quantitative Trait ◽  
Morphological Traits ◽  
Competitive Ability ◽  
Stem Elongation ◽  
Flag Leaf ◽  
Triticum Aestivum L ◽  
Ryegrass Growth

As weeds develop resistance to a broad range of herbicides, wheat (Triticum aestivum L.) cultivars with superior weed competitive capacity are needed to complement integrated weed management strategies. In this study, agronomic and morphological traits that enable wheat to compete effectively with weeds were identified. Halberd, Cranbrook, and 161 Cranbrook x Halberd doubled haploid (DH) lines were examined in field experiments conducted over two growing seasons. The weed species Lolium rigidum L. (annual ryegrass) was sown in strips perpendicular to the direction of wheat seeding. Various traits were measured during each season with competitive ability determined by both percent loss in wheat grain yield and suppression of ryegrass growth. Width of leaf 2, canopy height, and light interception at early stem elongation (Z31), and tiller number, height at maturity, and days to anthesis were important for competitive ability in 1999. In the previous year, length of leaf 2 and size of the flag leaf contributed to competitiveness. Seasonal effects appeared to have some impact on the relative contribution of crop traits to competitive ability. The morphological traits involved in maintaining grain yield differed from those that contributed to the suppression of ryegrass growth. Development of the Cranbrook x Halberd chromosomal linkage map enabled the putative identification of quantitative trait loci (QTL) associated with competitive ability in the DH population. Many of the QTL were mapped to similar positions in both years. Further, several traits, including time to anthesis, flag leaf size, height at stem elongation, and the size of the first 2 leaves, were mapped to similar positions on chromosomes 2B and 2D. Narrow-sense heritabilities on an entry-mean basis were typically high within each year for traits associated with weed competitive ability. However, large genotype x year interactions reduced these heritabilities, making genetic gain through phenotypic selection difficult. The identification of QTL repeatable over seasons indicates the potential for marker-assisted selection in a wheat breeding program selecting for improved grain yield and weed competitiveness.

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