scholarly journals QTL mapping for flag leaf-related traits and genetic effect of QFLW-6A on flag leaf width using two related introgression line populations in wheat

PLoS ONE ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. e0229912
Author(s):  
Xue Yan ◽  
Shuguang Wang ◽  
Bin Yang ◽  
Wenjun Zhang ◽  
Yaping Cao ◽  
...  
Keyword(s):  
Qtl Mapping ◽  
Flag Leaf ◽  
Genetic Effect ◽  
Introgression Line ◽  
Leaf Width ◽  
Flag Leaf Width

Fine mapping TaFLW1, a major QTL controlling flag leaf width in bread wheat (Triticum aestivum L.)

2013 ◽  
Vol 126 (8) ◽  
pp. 1941-1949 ◽  
Author(s):  
Shulin Xue ◽  
Feng Xu ◽  
Guoqiang Li ◽  
Yan Zhou ◽  
Musen Lin ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Bread Wheat ◽  
Fine Mapping ◽  
Flag Leaf ◽  
Triticum Aestivum L ◽  
Leaf Width ◽  
Flag Leaf Width ◽  
Major Qtl

scholarly journals Genetic Variability Studies for Yield and Yield Related Attributes in Rice (Oryza sativa L.) Genotypes

2021 ◽  
pp. 113-123
Author(s):  
Babburi Dinesh ◽  
Gaibriyal M. Lal ◽  
L. Bhanuprasad
Keyword(s):  
Genetic Variability ◽  
Grain Yield ◽  
Plant Height ◽  
Correlation Coefficient ◽  
Harvest Index ◽  
Flag Leaf ◽  
Leaf Width ◽  
Path Coefficient ◽  
Flag Leaf Width ◽  
Biological Yield

A set of twenty four rice genotypes including one check variety were grown to estimate study genetic variability, heritability, genetic advance, correlation and path coefficient for 13 quantitative characters, observation recorded to study the genetic variability parameters, correlation coefficient and path coefficient for yield and its attributing traits. High to moderate estimates of GCV and PCV were recorded for test weight followed by spikelets per panicle, grain yield per plant, flag leaf width, flag leaf length, tillers per hill, biological yield and panicles per hill. Grain yield indicated significant positive correlation with plant height followed by tillers per hill, panicles per hill, biological yield and harvest index in terms of phenotypic correlation coefficient whereas in terms of genotypic coefficient it showed positive and significant correlation with plant height, tillers per hill, panicles per hill, biological yield and harvest index. Path coefficient analysis showed positive significant direct effects on grain yield per hill were exhibited by plant height, tillers per hill and harvest index at genotypic level whereas it showed positive and significant direct effect for tillers per hill, flag leaf width, biological yield and harvest index at phenotypic level. Thus, these traits are identified as the efficient and potential for indirect selection for the improvement of rice productivity in the present experimental materials.

Effect of wheat genotype on the phenotype of wheat × jointed goatgrass (Aegilops cylindrica) hybrids

Weed Science ◽  
2006 ◽  
Vol 54 (4) ◽  
pp. 690-694 ◽  
Author(s):  
Maqsood Rehman ◽  
Jennifer L. Hansen ◽  
Jack Brown ◽  
William Price ◽  
Robert S. Zemetra ◽  
...  
Keyword(s):  
Plant Height ◽  
Common Wheat ◽  
Flag Leaf ◽  
Spike Length ◽  
Leaf Width ◽  
Wheat Genotype ◽  
Jointed Goatgrass ◽  
Flag Leaf Width ◽  
The Cross ◽  
Wheat Parent

Jointed goatgrass is a troublesome weed in winter wheat in the Pacific Northwest of the United States. Wheat and jointed goatgrass (JGG) can cross and produce hybrids in the field that can serve as a potential bridge for gene migration between the two species. To determine the potential for gene movement it is important to be able to identify hybrids in the field. To study the effect of wheat genotype on hybrid phenotype, reciprocal crosses were made between JGG and two common wheat cultivars: ‘Brundage 96’, ‘Hubbard’, a common-type advanced breeding line: ‘87–52814A’, and a club wheat cultivar: ‘Rhode’. Hybrids and parents were measured for plant height, spike length, flag leaf length, flag leaf width, and number of spikelets. Reciprocal effects were nonsignificant for all characteristics measured, indicating that hybrid morphology was not affected by the direction of the cross. Hybrids were different from their wheat parents for spike length, plant height, and flag leaf width. Hybrids produced from each of the wheat parents were uniform in phenotypic characters. Spikes were intermediate in circumference (size) from crosses between JGG and common wheat lines; however, club wheat × JGG crosses resulted in spikes that were more similar to common wheat. Spike size and flag leaf width for all hybrids also were intermediate between their parents. Hybrids differed in spike size and awn characteristics because of unique characteristics of the wheat parent. Based on these results, it should be possible to identify hybrids in the field accurately, regardless of the wheat parent or direction of the cross unless the parent is a club wheat.

scholarly journals Inheritance of some flag leaf and yield characteristics by half-diallel analysis in rice crops (Oryza Sativa L.)

2020 ◽  
Author(s):  
Nessreen N. Bassuony ◽  
József Zsembeli
Keyword(s):  
Grain Yield ◽  
Leaf Area ◽  
Combining Ability ◽  
Flag Leaf ◽  
Leaf Length ◽  
Leaf Width ◽  
Flag Leaf Width ◽  
The Cross ◽  
Flag Leaf Length ◽  
Half Diallel

AbstractThis study was conducted during 2018 and 2019 at the Rice Research and Training Centre farm, Sakha, Kafr el Sheikh, Egypt. Six genotypes of rice, Sakha 101, Giza 178, Irat 170, Wab-56-104, IR65500-127 and IR69853 were half-diallel crossed to estimate the combining ability effect as well as sink and yield potential in rice. Sink capacity (number of spikelets/panicle and 1000-grain weight), source leaf (flag leaf length, flag leaf width and flag leaf area), source-sink association (number of spikelets/panicle to flag leaf area ratio) and traits of yield components (filled grains number/panicle and panicle number) plant and grain yield/plant) were analysed. The results indicated that both general and specific combining ability were highly significant for all the studied characteristics. IR65500-127, Giza 178, and Sakha 101 were identified as good parents, so these parents were suggested for a further recombinant breeding programme. The cross of 3 × 5 was found to be superior for flag leaf width and grain yield, while the cross of 1 × 4 was found to be superior for flag leaf length, flag leaf length/width ratio, chlorophyll content and number of panicles/plant. Advancing these crosses and effected selections in segregating generation would be helpful to develop high yielding varieties. The genetic parameter showed a dominant deviation in one direction was controlled for all characters except flag leaf length. The analysis of the regression line showed that the over-dominance played an important role in the inheritance of gene action for grain yield/plant.

Detection of quantitative trait locus for leaffolder (Cnaphalocrocis medinalis (Guenée)) resistance in rice on linkage group 1 based on damage score and flag leaf width

Euphytica ◽  
2007 ◽  
Vol 157 (1-2) ◽  
pp. 35-43 ◽  
Author(s):  
K. Selvaraju ◽  
P. Shanmugasundaram ◽  
S. Mohankumar ◽  
M. Asaithambi ◽  
R. Balasaraswathi
Keyword(s):  
Quantitative Trait Locus ◽  
Linkage Group ◽  
Quantitative Trait ◽  
Flag Leaf ◽  
Leaf Width ◽  
Cnaphalocrocis Medinalis ◽  
Damage Score ◽  
Flag Leaf Width ◽  
Trait Locus ◽  
Group 1

scholarly journals Genetic analysis of flag leaf size and candidate genes determination of a major QTL for flag leaf width in rice

Rice ◽  
2015 ◽  
Vol 8 (1) ◽  
Author(s):  
Bin Zhang ◽  
Weijun Ye ◽  
Deyong Ren ◽  
Peng Tian ◽  
Youlin Peng ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Candidate Genes ◽  
Flag Leaf ◽  
Leaf Size ◽  
Leaf Width ◽  
Flag Leaf Width ◽  
Major Qtl

scholarly journals GENETIC DIVERSITY IN RICE (Oryza sativa L.) LANDRACES OF HILLY AREAS IN BANGLADESH

2011 ◽  
Vol 24 (2) ◽  
pp. 25-30 ◽  
Author(s):  
M. A. Siddique ◽  
M. Z. Islam ◽  
M. Khalequzzaman ◽  
M. S. Ahmed
Keyword(s):  
Genetic Diversity ◽  
Oryza Sativa L ◽  
Flag Leaf ◽  
Mean Value ◽  
Leaf Length ◽  
Leaf Width ◽  
Grain Length ◽  
Flag Leaf Width ◽  
Cluster Distance ◽  
Flag Leaf Length

Genetic diversity in 38 traditional local rice genotypes grown as Jhum in the hilly areas was studied under rainfed condition through Mahalanobis D2 statistic for grain yield and yield contributing characters. The genotypes were grouped into five clusters. The inter-cluster distances were higher than intra-cluster distances indicating wider genetic diversity among the clusters. The intra-cluster distances were lower in all the cases reflecting homogeneity of the genotypes within the clusters. The cluster V contained the highest number of genotypes (12) and the cluster I and III contained the lowest (5). The highest intra-cluster distance was noticed for the cluster III and lowest for cluster I. The highest inter-cluster distance was observed between cluster I and III followed by cluster II and III, cluster III and IV and the lowest between cluster II and IV. Regarding inter-cluster distance, the genotypes of cluster III   showed high genetic distance from all other clusters. The genotypes from cluster III could be hybridized with the genotypes of other clusters for producing transgressive segregants. Based on positive value of vector 1 and vector 2, flag leaf length, flag leaf width, days to 50% flowering, days to maturity, unfilled grain panicle-1, grain length and grain length breath ratio had maximum contribution towards genetic divergence. The highest cluster means for plant height, filled grains panicle-1 and yield were obtained from cluster III. The highest flag leaf width, days to 50% flowering, unfilled grain panicle-1, grain length,  grain breath and grain length breath ratio while the lowest mean value for yield were found in cluster I.  The lowest days to 50% flowering and maturity, and highest mean value for 1000-grain weight were found in cluster IV. Therefore, more emphasis should be given on cluster I and cluster III for selecting genotypes as parents for crossing with the genotypes of cluster IV which could produce new recombinants with desired traits.DOI: http://dx.doi.org/10.3329/bjpbg.v24i2.17003

scholarly journals A Novel QTL Controlling Flag Leaf Width Located on Chromosome Arm 7AS in Bread Wheat (Triticum Aestivum L.)

2020 ◽  
Author(s):  
Xueling Ye ◽  
Jian Li ◽  
Zhi Zheng ◽  
Hong Zhou ◽  
Dabing Xiang
Keyword(s):  
Grain Yield ◽  
Recombinant Inbred Lines ◽  
Flag Leaf ◽  
Triticum Aestivum L ◽  
Leaf Width ◽  
Flag Leaf Width ◽  
Chromosome Arm ◽  
Multiple Trials ◽  
Important Trait ◽  
Sumai 3

Abstract Background: Wheat is an important cereal crop and improving wheat production is essential for meeting the food demand from the growing population worldwide. Flag leaf width (FLW) is an important trait affecting plant architecture and contributing to grain yield. To detect loci conferring FLW, we assessed a population of recombinant inbred lines (RILs) from a cross of EGA Wylie/Sumai 3 in different environments.Results: A total of six QTL were detected from the population. Two of them located on chromosome 2B and the other four located on chromosomes 2D, 4B, 7A, and 7B, respectively. The percentage of phenotypic variation (PEV) explained by these loci ranged from 14.6% to 33.8%, with LOD scores varying from 3.01 to 7.81. Of them, the locus located on chromosome arm 7AS is likely novel. Significant effects of this locus were detected in multiple trials conducted and the PEV explained by this QTL varied from 14.6% to 19.8% among the different trials. An orthologous analysis based on rice and Arabidopsis identified 3 putative genes underlying this potentially novel locus.Conclusion: This study identified a stable potentially novel QTL in multiple environments and predicted three candidate genes of it, which laid the foundation for further fine-mapping and cloning the gene(s) underlying QFlw.WS-7A with the contribution to grain yield.

Fine mapping of a major QTL for flag leaf width in rice, qFLW4, which might be caused by alternative splicing of NAL1

2011 ◽  
Vol 31 (5) ◽  
pp. 863-872 ◽  
Author(s):  
Mingliang Chen ◽  
Ju Luo ◽  
Gaoneng Shao ◽  
Xiangjin Wei ◽  
Shaoqing Tang ◽  
...  
Keyword(s):  
Alternative Splicing ◽  
Fine Mapping ◽  
Flag Leaf ◽  
Leaf Width ◽  
Flag Leaf Width ◽  
Major Qtl
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