Linkage studies of the h gene with plant weight in flax genotrophs

1987 ◽  
Vol 73 (3) ◽  
pp. 343-349
Author(s):  
Y. A. Al-Saheal ◽  
A. S. Larik
Keyword(s):  
Linkage Studies ◽  
Plant Weight ◽  
H Gene ◽  
Flax Genotrophs

Identification of microsatellite markers near the human genes encoding the beta-cell ATP-sensitive K+ channel and linkage studies with NIDDM in Japanese

Diabetes ◽  
1996 ◽  
Vol 45 (2) ◽  
pp. 267-269 ◽  
Author(s):  
N. Iwasaki ◽  
M. Kawamura ◽  
K. Yamagata ◽  
N. J. Cox ◽  
S. Karibe ◽  
...  
Keyword(s):  
Beta Cell ◽  
Microsatellite Markers ◽  
K Channel ◽  
Linkage Studies ◽  
Human Genes ◽  
Genes Encoding

Linkage studies of NIDDM with 23 chromosome 11 markers in a sample of whites of northern European descent

Diabetes ◽  
1996 ◽  
Vol 45 (3) ◽  
pp. 370-375 ◽  
Author(s):  
S. C. Elbein ◽  
K. L. Bragg ◽  
M. D. Hoffman ◽  
R. A. Mayorga ◽  
M. F. Leppert
Keyword(s):  
Linkage Studies ◽  
Chromosome 11 ◽  
European Descent ◽  
Northern European

Inheritance and Linkage Studies with Five Isozyme Loci in Soybean 1

Crop Science ◽  
1987 ◽  
Vol 27 (5) ◽  
pp. 885-892 ◽  
Author(s):  
Jeffrey Griffin ◽  
Reid G. Palmer
Keyword(s):  
Linkage Studies ◽  
Isozyme Loci

Comparative analysis of genetic background in eight near-isogenic wheat lines with different H genes conferring resistance to Hessian fly

Genome ◽  
2011 ◽  
Vol 54 (1) ◽  
pp. 81-89 ◽  
Author(s):  
S. S. Xu ◽  
C. G. Chu ◽  
M. O. Harris ◽  
C. E. Williams
Keyword(s):  
Genetic Background ◽  
Genetic Similarity ◽  
Triticum Aestivum L ◽  
Hessian Fly ◽  
Pedigree Analysis ◽  
Recurrent Parent ◽  
Linkage Drag ◽  
Near Isogenic Lines ◽  
Isogenic Lines ◽  
H Gene

Near-isogenic lines (NILs) are useful for plant genetic and genomic studies. However, the strength of conclusions from such studies depends on the similarity of the NILs’ genetic backgrounds. In this study, we investigated the genetic similarity for a set of NILs developed in the 1990s to study gene-for-gene interactions between wheat ( Triticum aestivum L.) and the Hessian fly ( Mayetiola destructor (Say)), an important pest of wheat. Each of the eight NILs carries a single H resistance gene and was created by successive backcrossing for two to six generations to susceptible T. aestivum ‘Newton’. We generated 256 target region amplification polymorphism (TRAP) markers and used them to calculate genetic similarity, expressed by the Nei and Li (NL) coefficient. Six of the NILs (H3, H5, H6, H9, H11, and H13) had the highly uniform genetic background of Newton, with NL coefficients from 0.97 to 0.99. However, genotypes with H10 or H12 were less similar to Newton, with NL coefficients of 0.86 and 0.93, respectively. Cluster analysis based on NL coefficients and pedigree analysis showed that the genetic similarity between each of the NILs and Newton was affected by both the number of backcrosses and the genetic similarity between Newton and the H gene donors. We thus generated an equation to predict the number of required backcrosses, given varying similarity of donor and recurrent parent. We also investigated whether the genetic residues of the donor parents that remained in the NILs were related to linkage drag. By using a complete set of ‘Chinese Spring’ nullisomic-tetrasomic lines, one third of the TRAP markers that showed polymorphism between the NILs and Newton were assigned to a specific chromosome. All of the assigned markers were located on chromosomes other than the chromosome carrying the H gene, suggesting that the genetic residues detected in this study were not due to linkage drag. Results will aid in the development and use of near-isogenic lines for studies of the functional genomics of wheat.

Genetic Predispositions, Prophylactic Treatments and Private Health Insurance: Nothing is Better Than a Good Pair of Genes

1997 ◽  
Vol 23 (1) ◽  
pp. 45-68 ◽  
Author(s):  
Alexandra K. Glazier
Keyword(s):  
Health Care ◽  
Health Care Providers ◽  
Genetic Predisposition ◽  
Genetic Linkage ◽  
Dna Analysis ◽  
Care Delivery ◽  
Medical Community ◽  
Care Providers ◽  
Linkage Studies ◽  
Prophylactic Measures

Discovering the genetic basis of a particular disease is not only of great interest to the medical community; private health insurers are also anxiously awaiting the results of genetic linkage studies. Apart from the scientific value of DNA studies, the results of genetic linkage research are relevant to health care delivery in two principal ways. First, identifying the genetic origin of a disease may allow doctors to detect the disease earlier. If doctors know that an individual is genetically predisposed to a particular disease, then health care providers can increase screening efforts and watch for early symptoms. Second, if an individual has a genetic predisposition to a particular disease, health care providers may employ preventive or “prophylactic" measures to reduce or eliminate the risk of developing the disease or condition to which the individual is genetically predisposed. Genetic linkage studies will soon allow more individuals to learn of their own genetic predispositions to certain diseases. Currently genetic predisposition tests (both pedigrees of family history and DNA analysis) can indicate that an individual is at high risk for developing a disease.

scholarly journals LINKAGE STUDIES IN BARLEY

Genetics ◽  
1929 ◽  
Vol 14 (2) ◽  
pp. 222-222
Author(s):  
D W Robertson
Keyword(s):  
Linkage Studies

scholarly journals Foliar spray of gibberellic acid influences morphological attributes and foliage yield of coriander (Coriandrum sativum L.)

2018 ◽  
Vol 5 (1) ◽  
pp. 1-9
Author(s):  
Dhiman Das ◽  
Asim Kumar Bhadra ◽  
Mohd Moniruzzaman
Keyword(s):  
Gibberellic Acid ◽  
Vegetative Growth ◽  
Leaf Length ◽  
Distilled Water ◽  
Water Spray ◽  
Single Plant ◽  
Plant Weight ◽  
Morphological Attributes ◽  
Number Of Leaves ◽  
Different Doses

A field experiment was conducted at the research field of Sher-e- Bangla Agricultural University, Dhaka during the period from December 1, 2016 to January 11, 2017 to investigate the effect of gibberellic acid (GA3) on vegetative growth, morphological attributes and foliage (leaf) yield of coriander (Coriandrum sativum L.). The experimental treatments consisted of eight different doses of GA3 viz., 0 (distilled water spray), 5, 10, 15, 20, 25, 30 and 35 ppm. The variety Rosina (Pahuja Co., India) was used as planting material and different doses of GA3 were applied on the plants at 25 and 30 days after sowing. The experiment was laid out in Randomized Complete Block Design with three replications. GA3 had significant effect on vegetative growth, morphology, foliage yield and yield contributing characters of coriander. Plant height, number of leaves plant-1, leaf length, plant spread and single plant weight were found maximum from the application of GA3 at 20 ppm, which was closely followed by 25 ppm GA3. Application of GA3 at 20 ppm produced the highest weight of foliage m-2. A strong positive correlation of foliage yield was observed with plant height, number of leaves plant-1, leaf length, plant spread, single plant weight and weight of foliage m-2. Application of GA3 at 20 ppm gave maximum foliage yield (9.34 t ha-1) which was followed by GA3 at 15 ppm (8.46 t ha-1) and 25 ppm (8.06 t ha-1), and the minimum foliage yield was recorded from control (distilled water spray) (4.90 t ha-1). Application of GA3 at 20 ppm increased foliage yield over control by 47.54 %. A quadratic relationship between applied GA3 concentration and foliage yield was found; the regression equation was y = 4.87 + 0.375x – 0.009x2 from which it came up to be optimum dose of GA3 as 20.83 ppm.Res. Agric., Livest. Fish.5(1): 1-9, April 2018

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