scholarly journals Association between Grain Size and Shape and Quality Traits, and Path Analysis of Thousand Grain Weight in Iranian Bread Wheat Landraces from Different Geographic Regions

2016 ◽  
Vol 44 (1) ◽  
pp. 228-236 ◽  
Author(s):  
Moslem ABDIPOUR ◽  
Mohsen EBRAHIMI ◽  
Ali IZADI-DARBANDI ◽  
Anna Maria MASTRANGELO ◽  
Goodarz NAJAFIAN ◽  
...  
Keyword(s):  
Grain Size ◽  
Grain Yield ◽  
Bread Wheat ◽  
Grain Quality ◽  
Grain Morphology ◽  
Grain Weight ◽  
Quality Traits ◽  
Thousand Grain Weight ◽  
Geographic Regions ◽  
Grain Size And Shape

Grain characteristics, particularly grain weight, grain morphology, and grain protein content (GPC), are important components of grain yield and quality in wheat. A set of 98 bread wheat landraces from different geographic regions of Iran were used across 2013-2014 and 2014-2015 to determine the phenotypic diversity and relations between thousand grain weight (TGW), grain morphology and grain quality. A high-throughput method was used to capture grain size and shape. The genotypes were significantly different (P < 0.001) for all traits which reflects the high levels of diversity. A moderate to high broad sense heritability was found for all traits and ranged between 0.68 and 0.95 for grain yield and factor from density (FFD), respectively. Significant positive correlations were observed between TGW and grain size (or shape) exception of aspect ratio (AR) and roundness. However, grain quality traits, especially GPC had significant negative correlation with TGW. Based on stepwise regression analysis by taking TGW as dependent variable, grain volume, FFD, width, perimeter and Hardness Index (HI) were recognized as the most important traits and explained more than 99.3% of total variation of TGW. The path analysis revealed that FFD has maximum direct effect on TGW followed by volume, whereas perimeter and width had relatively less direct effect on TGW. According to cluster analysis, landraces separated into 5 clusters, and cluster III and IV had the maximum and minimum average for the most traits, respectively. Our study provides new knowledge on the relations between TGW, grain morphology and grain quality in bread wheat, which may aid the improvement of wheat grain weight trait in further research.

scholarly journals Evaluation of advanced bread wheat lines for yield components during season 2019-2020

2021 ◽  
Vol 2 (3) ◽  
pp. 4652-4662
Author(s):  
José Luis Félix-Fuentes ◽  
Guillermo Fuentes-Dávila ◽  
Ivón Alejandra Rosas-Jáuregui ◽  
Juan Manuel Cortés-Jiménez ◽  
Alma Angélica Ortiz-Avalos ◽  
...  
Keyword(s):  
Grain Yield ◽  
Bread Wheat ◽  
Sowing Date ◽  
Grain Weight ◽  
Thousand Grain Weight ◽  
Grain Length ◽  
Spike Number ◽  
Para Determinar ◽  
Third Line ◽  
Wheat Lines

ABSTRACT A study was conducted with seven advanced bread wheat lines to determine grain yield, a thousand grain weight, grain length, grain weight per spike, number of grains per spike, spike length and spike weight, at the Norman E. Borlaug Experimental Station in the Yaqui Valley, Sonora, Mexico, during the 2019-2020 crop season. Plots were 100 m long on three beds, 0.80 m apart, with two rows, and three replications; seed density was 100 kg/ha. Sowing date was December 14, 2019. Experimental lines were generated by the Global Wheat Program from the International Maize and Wheat Improvement Center, and they are candidates for commercial release by the National Institute for Forestry, Agriculture, and Livestock Research in Mexico. Genotypes BORL14*2/5/ATTILA/3*BCN*2//BAV92/3/ KIRITATI/WBLL1/4/DANPHE,   BORL14*2//MUNAL#1/FRANCOLIN#1, and PREMIO /4/CROC_1/AE.SQUARROSA(205)//KAUZ/3/PIFED/5/BORL14, showed the highest grain yield with 7.1, 7, and 6.9 t/ha, respectively, which can compete with current bread wheat cultivars in southern Sonora, Mexico, like Borlaug 100. The third line also showed the highest a thousand grain weight, grain length, grain weight per spike, and spike weight.   RESUMEN Se realizó un estudio con siete líneas avanzadas de trigo pan para determinar el rendimiento de grano, peso de mil granos, longitud de grano, peso de grano por espiga, número de granos por espiga, longitud de espiga y peso de espiga, en la Estación Experimental Norman E. Borlaug en el Valle del Yaqui, Sonora, México, durante la temporada de cultivo 2019-2020. Las parcelas tuvieron una longitud de 100 m en tres camas, separadas 0.80 m, con dos hileras y tres repeticiones; la densidad de semilla fue de 100 kg/ha. La fecha de siembra fue el 14 de diciembre de 2019. Las líneas experimentales fueron generadas por el Programa Global de Trigo del Centro Internacional de Mejoramiento de Maíz y Trigo, y son candidatas a ser liberadas comercialmente por el Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias de México. Los genotipos BORL14*2/5/ATTILA/3*BCN*2//BAV92/3/ KIRITATI/WBLL1/4/DANPHE, BORL14*2//MUNAL#1/FRANCOLIN#1, y PREMIO /4/CROC_1/AE.SQUARROSA(205)//KAUZ/3/PIFED/5/BORL14, mostraron el mayor rendimiento de grano con 7. 1, 7 y 6.9 t/ha, respectivamente, que pueden competir con los cultivares actuales de trigo pan en el sur de Sonora, México, como Borlaug 100. La tercera línea también mostró el mayor peso de mil granos, longitud de grano, peso de grano por espiga y peso de espiga.

scholarly journals Genetic and Environmental Variation of Barley Characteristics and the Potential of Local Origin Genotypes for Food Production

2015 ◽  
Vol 69 (4) ◽  
pp. 163-169 ◽  
Author(s):  
Ylle Tamm ◽  
Inga Jansone ◽  
Sanita Zute ◽  
Ida Jakobsone
Keyword(s):  
Grain Yield ◽  
Field Experiments ◽  
Evaluation Method ◽  
Environmental Variation ◽  
Grain Weight ◽  
Test Weight ◽  
Quality Traits ◽  
Thousand Grain Weight ◽  
Hulless Barley ◽  
Barley Genotypes

Abstract The aim of this study was to evaluate the genetic and environmental variation of yield and food quality characteristics (protein, starch, β-glucan and husk content, test weight and thousand grain weight) of covered and hulless barley genotypes in organic management conditions. Two different field experiments were carried out. In the first experiment, hulless barley genotypes 'Kornelija', 'Irbe', '1165', '1185' and the covered varieties 'Ansis' and 'Maali' were studied in two locations in Latvia and in one location in Estonia during 2014. 'Ansis', ‘Kornelija', '1165' and '1185' were included in the second experiment carried out at Stende during three sequential years (2011-2013). The effect of genotype, environment (location and year) and co-effect of these factors contributed significantly to the variation in yield and grain quality traits of the barley genotypes. As a result of experimental treatments grain yield and quality traits varied by all tested factors. There were considerable differences in impact of studied sources of variation. Grain yield was influenced more by environmental factors than by genotype. Impact of genotype was highest for husk content and test weight. Integral evaluation method was carried out for comparison of barley genotypes to identify the best ones by the lowest deviation from the desired value. The covered barley variety 'Maali' showed good adaptation to different environmental conditions, having good yield, β-glucan content and high thousand grain weight. The line '1165' and variety 'Kornelija' showed best results among hulless barley varieties

scholarly journals Identification of a novel QTL and candidate gene associated with grain size using chromosome segment substitution lines in rice

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dianwen Wang ◽  
Wenqiang Sun ◽  
Zhiyang Yuan ◽  
Qiang Sun ◽  
Kai Fan ◽  
...  
Keyword(s):  
Grain Size ◽  
Grain Yield ◽  
Genetic Basis ◽  
Grain Weight ◽  
Chromosome Segment ◽  
Thousand Grain Weight ◽  
Substitution Lines ◽  
Grain Length ◽  
Chromosome Segment Substitution Lines ◽  
Segment Substitution

AbstractRice is one of the staple crops in the world. Grain size is an important determinant of rice grain yield, but the genetic basis of the grain size remains unclear. Here, we report a set of chromosome segment substitution lines (CSSL) developed in the genetic background of the genome-sequenced indica cultivar Zhenshan 97. Genotyping of the CSSLs by single nucleotide polymorphism array shows that most carry only one or two segments introduced from the genome-sequenced japonica cultivar Nipponbare. Using this population and the high-density markers, a total of 43 quantitative trait loci were identified for seven panicle- and grain-related traits. Among these loci, the novel locus qGL11 for grain length and thousand-grain weight was validated in a CSSL-derived segregating population and finely mapped to a 25-kb region that contains an IAA-amido synthetase gene OsGH3.13, This gene exhibited a significant expression difference in the young panicle between the near-isogenic lines that carry the contrasting Zhenshan 97 and Nipponbare alleles at qGL11. Expression and sequence analyses suggest that this gene is the most likely candidate for qGL11. Furthermore, several OsGH3.13 mutants induced by a CRISPR/Cas9 approach in either japonica or indica exhibit an increased grain length and thousand-grain weight, thus enhancing the final grain yield per plant. These findings provide insights into the genetic basis of grain size for the improvement of yield potential in rice breeding programs.

REACTION OF RICE VARIETIES PERMITED FOR USE IN CONNECTION WITH YIELD FORMATION WITH A HIGH GRAIN QUALITY ON LEVEL OF NITROGEN NUTRITION IN AGROLANDSCAPE ZONES OF KRASNODAR REGION

2020 ◽  
Author(s):  
N.G. Tumanian ◽  
Keyword(s):  
Grain Size ◽  
Grain Quality ◽  
Nitrogen Nutrition ◽  
Nitrogen Fertilizers ◽  
Quality Traits ◽  
Rice Varieties ◽  
Head Rice ◽  
Krasnodar Region ◽  
Yield Formation ◽  
Applied Nitrogen

An increase in the doses of nitrogen fertilizers applied during the cultivation of new rice varieties Nautilus and Yakhont in the old-deltoid and valley agrolandscape zones led to significant changes in grain quality traits. The grain size of the varieties grown in the Krasnoarsmeysky district did not change due to the level of nitrogen fertilizers, for those grown in the Abinsky district, decreased by 0.3 g in variety Nautilus and increased in variety Yakhont with increased dose of applied nitrogen. The vitreousity of grain increased in Nautilus in the Krasnoarmeysky district by 2%, in Abinsky - by 7%; in the variety Yakhont - increased by 2% and practically did not change, respectively. A tendency toward a decrease in grain fracture in the Krasnoarmeysky district and an increase in head rice content in the variety Nautilus in the Krasnoarmeysky and Abinsky districts was noted.

scholarly journals Expected genetic advance for thousand grain weight and grain number per spike of bread wheat and durum wheat

2016 ◽  
Vol 61 (2) ◽  
pp. 113-125
Author(s):  
Gordana Brankovic ◽  
Dejan Dodig ◽  
Desimir Knezevic ◽  
Vesna Kandic ◽  
Jovan Pavlov
Keyword(s):  
Durum Wheat ◽  
Bread Wheat ◽  
Yield Component ◽  
Grain Weight ◽  
Phenotypic Variance ◽  
Environment Interaction ◽  
Genetic Advance ◽  
Thousand Grain Weight ◽  
Grain Number ◽  
Grain Number Per Spike

The research was aimed at examining variability, variance components, broadsense heritability (h2), expected genetic advance of thousand grain weight (TGW) and grain number per spike (GNS) of 15 genotypes of bread wheat and 15 genotypes of durum wheat. Field trials were carried out during 2010-2011 and 2011-2012 growing seasons at the three sites: Rimski Sancevi, Zemun Polje and Padinska Skela. Results of this investigation showed that the genetic component of variance (?2 g) was predominant for TGW of bread and durum wheat and for GNS of bread wheat. The genotype ? environment interaction (?2 ge) component of phenotypic variance was 8.72 times higher than ?2 g for GNS of durum wheat and pointed to the greater instability of durum wheat genotypes. h2 was very high (>90%) for TGW and GNS of bread wheat, high for TGW of durum wheat - 87.3% and low for GNS of durum wheat - 39.5%. Considering the high values obtained for h2 - 96.4% and the highest value for expected genetic advance as percent of mean (GAM) - 19.3% for TGW of bread wheat, the success of selection for desired values of this yield component can be anticipated. The success of selection cannot be predicted for GNS of durum wheat due to low values obtained for h2 and GAM of 39.5% and 2.8%, respectively.

Nitrogen Fertility Effects on Grain Yield, Protein, and Oil of Corn Hybrids with Enhanced Grain Quality Traits

2004 ◽  
Vol 3 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Peter R. Thomison ◽  
Allen B. Geyer ◽  
Bert L. Bishop ◽  
John R. Young ◽  
Edwin Lentz
Keyword(s):  
Grain Yield ◽  
Grain Quality ◽  
Quality Traits ◽  
Corn Hybrids ◽  
Nitrogen Fertility

Assessment of Variability of Foxtail Millet [Setaria italica (L.) Beauv.] Genotypes

2020 ◽  
Vol 7 (2) ◽  
pp. 51-61
Author(s):  
Manoj Kandel ◽  
Suk Gurung ◽  
Narayan Dhami ◽  
Jiban Shrestha
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Morphological Traits ◽  
Foxtail Millet ◽  
Leaf Length ◽  
Grain Weight ◽  
Panicle Length ◽  
Thousand Grain Weight ◽  
Leaf Blast ◽  
Days To Maturity

Analysis of genetic diversity and variability is an initial step for crop development in a plant breeding program. Thirty foxtail millet genotypes were evaluated for their ten agro-morphological traits viz. grain yield, days to heading, days to maturity, plant height, leaf length, leaf width, number of nodes per tiller, panicle length, thousand-grain weight, and leaf blast during April to August season of 2018 at Kabre, Dolakha, Nepal. Clustering was done based on variability observed among the genotypes for all the ten traits by the average linkage method. The genotypes were grouped into six clusters. The shortest inter cluster distance between Cluster I and Cluster II was 17.63 and the longest was between Cluster IV and Cluster VI with 47.55. Cluster I had the maximum leaf blast score with the minimum leaf length. The Cluster II had the maximum grain yield and days to 50% heading and the number of nodes per tiller. The Cluster III was characterized by the maximum leaf length and leaf blast value. The genotypes grouped into the Cluster IV were characterized by the lowest value of days to 50% heading and 80% days to maturity and those of Cluster V had the maximum thousand-grain weight. The genotypes categorized into Cluster VI had the maximum plant height, leaf length, and panicle length. Cluster II and Cluster V were good because of their agro-morphological traits. The presence of a high level of diversity among the genotypes indicated their suitability for selection in crop breeding programs. Correlation analysis of genotypes having the maximum panicle length leaf area and higher plant height and shorter maturity period are pre-requisite for improvement in grain yield.

Source - sink effects on grain weight of bread wheat, durum wheat, and triticale at different locations

2006 ◽  
Vol 57 (2) ◽  
pp. 227 ◽  
Author(s):  
Daniel F. Calderini ◽  
M. P. Reynolds ◽  
G. A. Slafer
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Bread Wheat ◽  
Grain Filling ◽  
Grain Weight ◽  
The Other ◽  
Field Conditions ◽  
Breeding Strategies ◽  
Source Sink ◽  
Source Limitation

Source limitation during grain filling is important for both management and breeding strategies of grain crops. There is little information on the sensitivity of grain weight of temperate cereals to variations in source–sink ratios, and no studies are available on the comparative behaviour of temperate cereals growing together in the same experiment. The objective of the current study was to evaluate, under field conditions, the response of grain weight to different source–sink ratios during grain filling in high-yielding cultivars of bread wheat, durum wheat, and triticale at 2 contrasting locations. Two experiments were carried out at C. Obregon and El Batan in Mexico. In each location, 6 genotypes (2 bread wheat, 2 durum wheat, 2 triticale) were evaluated. A week after anthesis, 2 source–sink (control and halved spikes) treatments were imposed. Location and genotype significantly (P < 0.01) affected grain yield and components. Significant grain weight increases (P < 0.05) were found only in 2 cases in El Batan. The highest response of 17% was found in triticale, with less than 10% in most of the other genotypes. The effect of genotype and location is discussed.

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