scholarly journals Pewarisan Karakter Kualitatif Cabai Hias Hasil Persilangan Cabai Besar dan Cabai Rawit

2017 ◽  
Vol 44 (3) ◽  
pp. 286
Author(s):  
Siti Hapshoh ◽  
Muhamad Syukur ◽  
Yudiwanti Wahyu ◽  
Dan Widodo
Keyword(s):  
Selection Process ◽  
Dominant Gene ◽  
Recessive Gene ◽  
Female Parent ◽  
Single Recessive Gene ◽  
Chi Square ◽  
F2 Population ◽  
Effective Selection ◽  
Chi Square Test ◽  
Qualitative Characters

ABSTRACT<br /><br />The fruit of ornamental chili functioned as ornamental as well as for consumption, and therefore it requires diversity of traits for selection process. Information on inheritance pattern of the traits are needed for effective selection. The ideotype of ornamental chili are shortened internode that form a bouquet of flowers, erect fruit orientation and contain anthocyanins for attractive appearance. The research was aimed to study qualitative characters inheritance associated with shortened internode, fruit orientation and anthocyanins content. This study used 6 population including female parent (P1) which has anthocyanin in flower parts, the male parent (P2) bird pepper which has the character of a shortened internode, F1, F1R, BCP1, BCP2, and F2. Data were analyzed with Chi-square test to determine the Mendelian ratio in the F2 population. The results showed that there were characters that was controlled by one gene or two genes. Shortened internode and erect fruit orientation were controlled by a single recessive gene with a ratio of 1:3. On the other hand the color of anthocyanin in the anther stem was controlled by one dominant gene with a ratio of 3:1. The characters controlled by two genes that were dominant and recessive epistasis was the color of anthocyanins in the anther with the ratio 13:3.<br /><br />Keywords: Mendelian ratio, antosianin, shortened internode <br /><br />

scholarly journals Genetics of Orange, Red and Yellow Root Colours in Tropical Carrots (Dacus Carota L.)

2021 ◽  
Author(s):  
Raman Selvakumar ◽  
Dalasanuru Chandregowda Manjunathagowda ◽  
Pritam Kalia
Keyword(s):  
Recessive Gene ◽  
Human Nutrition ◽  
Single Recessive Gene ◽  
Genetic Inheritance ◽  
Chi Square ◽  
Colour Inheritance ◽  
Root Epidermis ◽  
Filial Generation ◽  
Chi Square Test ◽  
Dominant Genes

Abstract The research was carried out to study the colour inheritance genetics of the root epidermis, core (phloem) and cortex (xylem), from the parental crosses of the varieties Pusa Meghali (Orange), Pusa Rudhira (Red) and Pusa Kulfi (Yellow). Resultant in crosses yielded uniform mixed colours in F1 (first filial generation), thus could enhance the security of human nutrition through the mixture of carotenoids and anthocyanins in the F1. The F1s were advance to produce F2 and backcross (BCP1 and BCP2) generations, and the Chi-square test ratio (χ2) showed that the root colour of the orange epidermis and cortex (xylem) was dominant over the red and yellow colours, and regulated by dominant genes Oe and Ocx from the parent Pusa Meghali. While, the root colour of the orange core (phloem) was found to be recessive to the red (Rc) from Pusa Rudhira and yellow (Yc) colour from Pusa Kulfi, and to be regulated by a single recessive gene (oc) from the parent Pusa Meghali. These finding of genetic inheritance of colours would be useful in the development of bio-fortified F1 hybrids and varieties which are rich in flavonoids.

scholarly journals Environmental health community service: Confronting the human resource challenges

2019 ◽  
Vol 17 ◽  
Author(s):  
Patience Mbola ◽  
Izanne S. Human ◽  
Paula E. Melariri
Keyword(s):  
South Africa ◽  
Environmental Health ◽  
Community Service ◽  
Cross Sectional Study ◽  
Eastern Cape ◽  
Chi Square ◽  
Cross Sectional ◽  
Health Practitioners ◽  
Effective Selection ◽  
Chi Square Test

Orientation: The environmental health graduates are required to complete community service before they could be registered as independent practitioners by the Health Professions Council of South Africa. Community service programme serves as the mechanism to recruit healthcare professionals who will improve the provision of equitable and quality healthcare.Research purpose: The study aimed to explore, identify and describe the factors that had an influence on the effective selection, placement and utilisation of environmental health graduates as well as an evaluation of the effectiveness of community service.Research approach/design and method: A quantitative, cross-sectional study was conducted using self-administered questionnaires. The study included 24 environmental health practitioners who completed their community service and 10 environmental health practitioners responsible for coordinating community service in the municipal, provincial and national spheres of government in the Eastern Cape province of South Africa during 2013–2016. Purposive sample was drawn from each population. T-test and chi-square test were used to determine the statistical significant differences. The open-ended question responses from the structured questionnaire were qualitatively analysed by an independent coder.Main findings: The findings revealed major problems regarding the effective implementation of community service that included decreasing number of community service posts, inadequate material resources, lack of induction, inconsistent supervision, and a lack of evaluation of the community service.Contribution: The study findings suggest important inequalities that should deserve urgent attention. Study concludes by presenting recommendations for the improvement of the community service in the environmental health.

scholarly journals Genetics of Height and Branching in Faba Bean (Vicia faba)

Agronomy ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1191
Author(s):  
Jessa Hughes ◽  
Hamid Khazaei ◽  
Albert Vandenberg
Keyword(s):  
Faba Bean ◽  
Plant Architecture ◽  
Cropping Systems ◽  
Dominant Gene ◽  
Recessive Gene ◽  
Initial Growth ◽  
Chi Square ◽  
Branch Number ◽  
Dwarf Gene ◽  
Genetic Source

A better understanding of the genetics of plant architecture, including height and branching, could improve faba bean breeding for varieties with better fit into specific cropping systems. This study aimed to determine the inheritance and genetic interactions of the sources of the dwarf gene (dwf1) and semi-dwarf gene (dwarf1), and to investigate the genetics of branching in the faba bean. We chose inbred lines IG 12658 (dwarf, carrying dwf1) and Rinrei (semi-dwarf, carrying dwarf1) along with Aurora/2 and IG 114476 as sources of non-dwarf faba bean genotypes and crossed them (Aurora/2 × IG 12658, IG 114476 × IG 12658, Rinrei × IG 12658, IG 114476 × Rinrei, and Rinrei × Aurora/2). IG 114476 was also used as a genetic source of a highly branching phenotype and crossed with IG 12658, Rinrei, and Aurora/2 to study the genetics of branching. Parental lines, F1s, and F2 populations were evaluated under growth chamber and field conditions in 2018. The segregating F2 populations were tested for 3:1 single recessive gene inheritance using Chi-square tests. Both dwarfing/semi-dwarfing genes fit 3:1 recessive, and 15:1 for double recessive. Rinrei was not a true dwarf, and the gene creating the dwarf appearance reduced the initial growth rate, but this corrected over time. Multiple F2 populations were also tested for a 3:1 single dominant gene hypothesis for highly branched phenotypes. These populations showed a bell-shaped phenotypic distribution for branch number, with no discernable classes, and revealed that branching was likely quantitatively controlled. In conclusion, dwarfism and branching in faba bean were controlled qualitatively and quantitatively, respectively.

scholarly journals INHERITANCE OF ZINGIBERENE IN LYCOPERSICON

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1169b-1169
Author(s):  
Fazal R. Rahimi ◽  
Catherine Carter
Keyword(s):  
Colorado Potato Beetle ◽  
Dominant Gene ◽  
Recessive Gene ◽  
Single Dominant Gene ◽  
Single Recessive Gene ◽  
Potato Beetle ◽  
Backcross Populations

Zingiberene, a sesquiterpene, was detected in the foliage extract of L. hirsutum f. hirsutum Humb. and Bonp1. (hir), and confirmed by GC-MS. Zingiberene does not exist in L. hirsutum f. glabratum C. H. Mull (gla), which instead contains 2-tridecanone. 2-Tridecanone confers resistance to gla against Colorado Potato Beetle. The Presence of Zingiberene is associated with resistance against Colorado Potato Beetle in hir, which does not contain 2-tridecanone. The gene that conditions zingiberene acts differently in two different genetic backgrounds. In gla × hir this gene acts as a single recessive gene, while in L. esculentum × hir it acts as a single dominant gene. This situation, which has been studied in F2 and backcross populations of crosses in both directions are examined and discussed.

Genetic analysis for resistance to leaf curl disease in Chilli Peppers (Capsicum annuum L.) under specific situations

2020 ◽  
Vol 79 (04) ◽  
Author(s):  
Pradeep Kumar Maurya ◽  
Arpita Srivatstava ◽  
Manisha Mangal ◽  
Akshay Talukdar ◽  
Bikash Mondal ◽  
...  
Keyword(s):  
Recessive Gene ◽  
Viral Disease ◽  
Specific Marker ◽  
Chi Square ◽  
Resistant Genotype ◽  
Chi Square Test ◽  
Leaf Curl Virus ◽  
Chilli Leaf Curl Virus ◽  
Leaf Curl Disease ◽  
Leaf Curl

Leaf curl is a serious viral disease of chilli caused by a group of bigomoviruses dominated by chilli leaf curl virus (ChiLcv). With the aim to study the mode of inheritance of the ChiLcv disease resistance, a resistant genotype DLS-Sel.10 was crossed with a susceptible genotype Phule Mukta and F1, F2, B1 and B2 generations were developed. The parents along with the segregating generations were screened under natural conditions as well as challenged inoculation with viruliferous whiteflies carrying predominant ChiLcv.PCR amplification of viral genome-specific marker confirmed the presence of virus in all the tested plants however, only susceptible plants produced symptoms. The F1 plants showed susceptibility under both natural and challenged inoculation conditions indicating that the resistance is of recessive nature. On Chi-square test, it was found that susceptible and resistant plants of the two F2populations segregated in a ratio of 3 susceptible : 1 resistant plants and the B2 population derived from DLS-Sel.10/Phule Mukta//DLS-Sel.10 segregated in a ratio of 1 resistant : 1 susceptible plant suggesting that the Chilcv is goverened by a single recessive gene. The findings of this study will help in breeding for ChiLcv resistance in Chilli.

scholarly journals Genetics of Semideterminate Growth Habit in Tomato

HortScience ◽  
1991 ◽  
Vol 26 (8) ◽  
pp. 1074-1075 ◽  
Author(s):  
Yonatan Elkind ◽  
Arie Gurnick ◽  
Nachum Kedar
Keyword(s):  
Lycopersicon Esculentum ◽  
Genetic Control ◽  
Goodness Of Fit ◽  
Growth Habit ◽  
Recessive Gene ◽  
Main Stem ◽  
Single Recessive Gene ◽  
Gene Model ◽  
Chi Square ◽  
Tomato Line

The objective of this study was to elucidate the genetic control of the semideterminate growth habit in tomato (Lycopersicon esculentum Mill.). A semideterminate tomato line was crossed with determinate and indeterminate lines; their F1, F2, and backcrosses were grown; and the growth habit recorded and analyzed. Plants with six or more inflorescences on the main stem were defined as semideterminate, while those with fewer were defined as determinate. The F2 and backcross to determinate were bimodal, indicating a single recessive gene for semideterminate, which was denoted as sdt. The goodness-of-fit chi square for a single recessive gene model was 88% and 69% for F2 and backcross generations, respectively. In the cross between semideterminate and indeterminate types, the results indicated control by two genes, sp and sdt, with the sp+ indeterminate type epistatic over semideterminate. The goodness-of-fit to this model was 70% and 82% for F2 and backcross generations, respectively.

scholarly journals Deep Learning Classifier for Gene Expression Datasets using a Hybrid LSTM Network

2020 ◽  
Vol 9 (4) ◽  
pp. 1081-1089
Keyword(s):  
Feature Selection ◽  
Deep Learning ◽  
Bayesian Networks ◽  
Selection Process ◽  
Hybrid Approach ◽  
Learning System ◽  
Nearest Neighbour ◽  
Chi Square ◽  
Correlation Degree ◽  
Chi Square Test

A deep learning system Long Short-term memory (LSTM) is incorporated for the classification of differentially expressed genes which causes certain abnormalities in the human body. The LSTM is employed along with the K-Nearest Neighbour (KNN) algorithm so as to achieve the classification to its precision. The feature selection process plays a vital as some of the existing algorithms tend to neglect the features of concern. The classification further leads to enhanced prediction method. The K-Nearest Neighbour method is used to filter the correlation degree between each value with target value. This hybrid algorithm has a clear leverage over the existing methods. This work is well supported by the Feature Selection which includes a hybrid of Principal Component Analysis and the CHI square test. This hybrid approach provides with a good feature selection which aides in the seamless flow of the process towards classification and prediction. The Eigen values and the Eigen vectors are computed which effectively leads to the identification of Principal components. The Chi Square test is implemented for calculating the scores. The features that are obtained are ranked by these scores and the datasets which has the highest scores are further taken for training. The algorithms employed in this work has a clear advantage over the Bayesian networks as the Bayesian networks are prone to errors within the layers which may cause the values to explode or vanish. The accuracy of the classification and the prediction process achieved is unsurpassed when compared to the existing methods.

scholarly journals Inheritance of the Easy-peeling Pellicle Trait of Japanese Chestnut Cultivar Porotan

HortScience ◽  
2012 ◽  
Vol 47 (7) ◽  
pp. 845-847 ◽  
Author(s):  
Norio Takada ◽  
Sogo Nishio ◽  
Masahiko Yamada ◽  
Yutaka Sawamura ◽  
Akihiko Sato ◽  
...  
Keyword(s):  
Recessive Gene ◽  
Diallel Cross ◽  
Single Locus ◽  
Chi Square ◽  
Monogenic Inheritance ◽  
Castanea Crenata ◽  
Chi Square Test ◽  
The Cross ◽  
Half Diallel

‘Porotan’ is a Japanese chestnut cultivar (Castanea crenata Sieb. et Zucc.) that was selected from offspring of the cross 550-40 × ‘Tanzawa’ and released in 2006. Its nut is distinguished by a pellicle that is easy to peel after roasting; previously, all Japanese chestnut cultivars were thought to have a pellicle that was difficult to peel. Both 550-40 and ‘Tanzawa’ are Japanese chestnuts, and 550-40 is a selection descended from ‘Tanzawa’. Both 550-40 and ‘Tanzawa’ have a pellicle that is difficult to peel. Among 59 offspring of a cross of 550-40 × ‘Tanzawa’, 12 had an easy-peeling pellicle and 47 had a difficult-peeling pellicle; this ratio is not significantly different from the 1:3 expected ratio for monogenic inheritance based on a chi-square test at P = 0.05. A half-diallel cross without selfings was made among ‘Porotan’, ‘Tanzawa’, and ‘Tsukuba’. All the offspring from ‘Tanzawa’ × ‘Tsukuba’ and from ‘Tsukuba’ × ‘Porotan’ had a difficult-peeling pellicle; in contrast, 39 offspring from ‘Tanzawa’ × ‘Porotan’ segregated in a ratio of 19 difficult-peeling pellicle to 20 easy-peeling pellicle, which is not significantly different from the expected 1:1 ratio for monogenic segregation based on a chi-square test at P = 0.05. These results suggest that the easy-peeling pellicle trait of ‘Porotan’ is controlled by a major recessive gene at a single locus. We designated the pellicle peelability locus as P/p. According to this model, the ‘Tsukuba’ genotype is homozygous-dominant (PP), the ‘Tanzawa’ genotype is heterozygous (Pp), and the ‘Porotan’ genotype is homozygous-recessive (pp).

Variation in, and inheritance of seedling and adult-plant resistance in subterranean clover (Trifolium subterraneum L.) to leaf scorch (Kabatiella caulivora) (Kirch.) Karak

1990 ◽  
Vol 41 (1) ◽  
pp. 115 ◽  
Author(s):  
M Chandrashekar ◽  
GM Halloran
Keyword(s):  
Dominant Gene ◽  
Recessive Gene ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Single Recessive Gene ◽  
Seedling Resistance ◽  
Kabatiella Caulivora ◽  
The Cross ◽  
Clover Scorch ◽  
Adult Plants

The disease reaction of seedlings (2 weeks old) from a field collection of subterranean clover (Trifolium subterraneum) to clover scorch (Kabatiella caulivora (Kirch.) Karak), revealed 89 immune plants out of a total of 1530. However, with adult plants (15-16 weeks old) only one plant remained immune. In the F2 population of the cross of the cultivars (Daliak X Woogenellup (D X W), seedling resistance was conditioned by a single dominant gene and in the cross (Enfield X Woogenellup) (EX W) by a single recessive gene. However, with adult plants, resistance in the (D X W) F2 was conditioned by a single recessive gene and that in the (EX W) F2 by two recessive genes. The effect of increasing age in reducing the proportion of plants resistant to clover scorch in both studies indicates that caution is needed in evaluating resistance to clover scorch in epidemiological, breeding and genetic studies.

Genetic analysis of resistance to bacterial blight in rice

Genome ◽  
1988 ◽  
Vol 30 (3) ◽  
pp. 299-302 ◽  
Author(s):  
S. C. Prasad ◽  
J. B. Tomar
Keyword(s):  
Resistance Genes ◽  
Bacterial Blight ◽  
Xanthomonas Campestris ◽  
Dominant Gene ◽  
Recessive Gene ◽  
Susceptible Cultivar ◽  
Inheritance Of Resistance ◽  
Single Recessive Gene ◽  
Clipping Technique ◽  
Mode Of Inheritance

The mode of inheritance of resistance to bacterial blight, Xanthomonas campestris pv. Oryzae was studied in 12 rice cultivars: 'BR51-282-8', 'DV85', 'CAS209', 'Java14', 'IR4613-54-5', 'Zenith', 'IR36', 'Neuli', 'BJ1', 'LZN', 'MRC603-303', and 'D204-1'. These resistance cultivars were crossed with a susceptible tester parent 'TN1'. The plants were inoculated at the maximum tillering stage by the clipping technique. From the reactions of F1, F2, and F3 populations, it was found that resistance in 'LZN', 'MRC603-303', and 'D204-1' was conditioned by a single recessive gene. The resistance in 'BR51-282-8', 'DV85', 'CAS209', 'Javal4', 'IR4613-54-5', 'Zenith', 'IR36', 'Neuli', and 'BJ1' was controlled by a single dominant gene. The allelic relationships of resistance genes in the test cultivars with Xa4 was studied. The Xa4 gene was originally identified and designated in 'IR22'. The resistance genes in the test cultivars were nonallelic to Xa4. The trisomie lines of 'IR36' were crossed with 'Jaya', a highly susceptible cultivar to bacterial blight. The segregation pattern of the F2 and backcross generations revealed that the resistance gene of 'IR36' was located on chromosome 12 of the rice genome.Key words: rice, resistance, bacterial blight, allelic relationship, trisomics.

Sign in / Sign up

Export Citation Format

Share Document