scholarly journals Inheritance of Resistance to Iron Deficiency in Dry Beans

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 841G-842
Author(s):  
H.M. Cortinas-Escobar ◽  
Douglas C. Scheuring ◽  
Thomas J. Gerik ◽  
J. Creighton Miller

Dry bean (Phaseolus vulgaris L.) cultivars differ in their response to iron deficiency when grown on calcareous soils. This response is influenced by environmental factors such as soil pH, soil texture, presence of bicarbonates, organic matter, and temperature. The objective of this study was to investigate the genetic basis for resistance to iron deficiency in beans. Crosses between nine resistant and three susceptible cultivars/lines were made in the greenhouse during Spring 1994, and F2 seeds from 12 different crosses were obtained in the summer. Seed of the parental and F2 generations were planted near Temple, Texas, during Fall 1994. The color (greenness) of 1482 F2 plants was measured using a chlorophyll meter (Minolta SPAD-502) 35 days after planting. Chi-square analysis showed a good fit to a 15:1 ratio of resistant: susceptible plants. The F2 segregation suggests that two dominant genes are involved in the response to iron deficiency in dry beans, and when either dominant gene is present, resistance is expressed to some degree.

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 841F-841
Author(s):  
H.M. Cortinas-Escobar ◽  
Douglas C. Scheuring ◽  
Thomas J. Gerik ◽  
J. Creighton Miller

Cowpea [Vigna unguiculata (L.) Walp.] cultivars differ in their response to iron deficiency when grown on calcareous soils. This response is influenced by environmental factors such as soil pH, soil texture, presence of bicarbonates, and temperature. The objective of this study was to determine the genetic basis for resistance to iron deficiency in cowpea. Crosses of `Texas Pinkeye Purple Hull' (resistant) and `Pinkeye Purple Hull' (susceptible) were made in the greenhouse during Spring 1994, and F2 seeds were obtained in the summer. Reciprocal crosses were made in order to test for maternal effects. Seed of the parental, F1, and F2 generations were planted near Temple, Texas, during Fall 1994. The color (greenness) of 1031 F2 plants was measured using a chlorophyll meter (Minolta SPAD-502) 35 days after planting. Chi-square analysis showed a good fit to a 3:1 ratio of susceptible: resistant plants. These results suggest simple inheritance of the response to iron deficiency in cowpea. Similar segregation of the reciprocal crosses indicated absence of maternal inheritance.


2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Thushanthi Perera ◽  
Yumie Takata ◽  
Gerd Bobe

Abstract Objectives The objective of this study was to evaluate current legume consumption in U.S. adults by using cross-sectional data from the 2011–12 and 2013–14-year cycles of NHANES Methods Participants were grouped into non-legume consumers and consumers, which were further grouped into low mature legume consumers (<37.5 g/d, which are the dietary recommendations for mature legume consumption), marginal mature legume consumption (37.5–87.49 g/d, the latter being the cut-off point demonstrating nutritional and disease prevention benefits), and disease prevention mature legume consumption (≥ 87.5 g/d legume consumption). Groups were compared using a t-test (for comparison of legume consumers vs. non-consumers) or generalized least-squared means (for comparison among legume consumer groups) for continuous data and a chi-square test for categorical data. All tests were two-sided. Significance of group differences was determined to be at P ≤ 0.05. Results Legume consumption frequency in U.S. adults was low and showed a downward trend from 2011 to 2014 of 18.5% to 13.7% on a given day. The downward trend is primarily due to a decrease in dry bean consumption from 10.0% to 6.5%. The primary legume groups consumed were dry beans and green legumes; chickpeas and lentils were consumed by about 1% of participants at a given day. Legumes were mainly consumed as side or main dish (both primarily dry beans and green legumes) with a declining trend over time for using legumes as soup and main dish. 2.2% (2011–2012) and 1.8% (2013–2014) of NHANES participants ate at least 1 cup/d of mature legumes, 7.1% (2011–2012) and 5.3% (2013–2014) at least 0.5 cup/d of mature legumes, and 14.0% (2011–2012) and 10.7% (2013–2014) at least 37.5 g/d of mature legumes during the 2 surveying days after adjusting for caloric intake. Conclusions Legume consumption declined rather than increased in U.S. adults, warranting improved communication about the disease prevention benefits of regular legume consumption. Funding Sources None.


HortScience ◽  
1991 ◽  
Vol 26 (5) ◽  
pp. 496d-496 ◽  
Author(s):  
Charles E. Johnson ◽  
Blair Buckley

Inheritance of dark green stripe and light green rind color in watermelon was investigated. Controlled crosses were made between watermelon cultivars: `Louisiana Sweet'-light green rind with dark green stripe; `Calhoun Sweet'-dark green rind without stripes; and `Charleston Gray' and `Calhoun Gray' both having light green rind without stripes. Plants of parental, F1, F2, and BC lines were classified as to rind color and presence or absence of stripe. All F1 progenies produced only striped fruit. Chi Square analysis of F2 and BC generations corresponded to 3:1 and 1:1 ratios respectively, for stripe:no stripe, indicating dark green stripe was controlled by one dominant gene. The cross `Louisiana Sweet' × `Calhoun Sweet',(light green × dark green rind color), resulted in F1 and F2 progeny having only dark green rind fruit, indicating obvious dominance for dark green rind color. Segregation in BC populations indicated a single dominant gene for dark green rind color; however, lack of segregation in the F2 suggests additional factors may be involved.


2011 ◽  
Vol 41 (No. 4) ◽  
pp. 167-170 ◽  
Author(s):  
J. Salava ◽  
J. Polák ◽  
B. Krška

In order to determine the inheritance of resistance to PPV in apricot three crosses between resistant and susceptible cultivars and selections were performed. The B<sub>1</sub> seedlings were inoculated with the PPV-M strain by an infected bud. PPV infection was evaluated over 5 consecutive growth periods through visual symptoms, ELISA and in some cases reverse transcriptase PCR assays. Chi-square analysis of each B<sub>1</sub> progeny was performed to determine if the segregation ratio differed from the expected ratio. PPV resistance segregated in three apricot B<sub>1</sub>progenies in a 1:7 (resistant:susceptible) ratio, indicating that resistance was controlled by three independent dominant complementary genes. All three dominant genes are needed for the resistance to be expressed, and the lack of any one of the dominant alleles will result in susceptibility. This knowledge will help us in effective planning of apricot breeding programs with this subjective.


2011 ◽  
Vol 136 (1) ◽  
pp. 48-53 ◽  
Author(s):  
Caihong Wang ◽  
Yike Tian ◽  
Emily J. Buck ◽  
Susan E. Gardiner ◽  
Hongyi Dai ◽  
...  

European pear (Pyrus communis) ‘Aihuali’ carrying the dwarf character originating from ‘Nain Vert’ was crossed with ‘Chili’ (Pyrus bretschneideri). A total of 352 F1 progenies was produced to investigate the inheritance of the dwarf trait, and 111 of these were used to develop molecular markers. Chi-square analysis showed that the character fitted a 1:1 ratio indicative of a single dominant gene, which we have named PcDw. Using a bulked segregant analysis approach with 500 random amplified polymorphic DNA (RAPD) and 51 simple sequence repeat (SSR) markers from pear (Pyrus pyrifolia and P. communis) and apple (Malus ×domestica), four markers were identified as cosegregating with the dwarf character. Two of these were fragments produced by the S1212 and S1172 RAPD primers, and the other two were the pear SSR markers KA14 and TsuENH022. The RAPD markers were converted into sequence-characterized amplified regions (SCARs) and designated S1212-SCAR318 and S1172-SCAR930 and, with the SSR markers KA14 and TsuENH022, were positioned 5.9, 9.5, 8.2, and 0.9 cM from the PcDw gene, respectively. Mapping of the KA14 and TsuENH022 markers enabled the location of the PcDw gene on LG 16 of the pear genetic linkage map.


2003 ◽  
Vol 83 (2) ◽  
pp. 417-422 ◽  
Author(s):  
A. K. Singh ◽  
B. G. Rossnagel ◽  
G. J. Scoles ◽  
R. A. Pickering

Scald incited by Rhynchosporium secalis (Oud.) J.J. Davis is an important fungal foliar disease of barley (Hordeum vulgare L.) that can cause significant yield and quality losses. While application of fungicides and/or cultural practices are possible control methods, the use of genetic resistance is a very desirable control strategy. Two New Zealand barley lines, 4176/10/n/3/2/6 and 145L2, derived from interspecific crosses, were evaluated in scald nurseries at Lacombe and Edmonton, AB, in 1998 and exhibited a high level of resistance. The objectives of this study were to further evaluate the level of resistance in these lines under western Canadian conditions and to study the inheritance of that resistance. Lines 4176/10/n/3/2/6 and 145L2 were each crossed with the scald susceptible cultivars CDC McGwire and RFLP Harrington. A scald screening nursery at Lacombe, AB, was utilized for disease testing in 1999 and nurseries at Lacombe and Edmonton, AB, were used in 2000. The F1 and F2 generations of all resistant/susceptible crosses were evaluated in 1999. One hundred F4:5 recombinant inbred lines from each cross were evaluated in replicated trials in 2000. Lines 4176/10/n/3/2/6 and 145L2 were resistant in all trials and resistant/susceptible populations segregated for single gene control of resistance in the F2 and F4:5 generations. Chi square analysis indicated that they possess a single dominant gene for resistance. These two lines should provide simply inherited sources of scald resistance for western Canada. Key words: Scald, barley, inheritance, resistance, Rhynchosporium secalis


2019 ◽  
Vol 12 (1) ◽  
pp. 42-51
Author(s):  
Dwi Indah Sulistiani ◽  
Ujang Maman ◽  
Junaidi J

Objective of this research; 1) determine the perception of ranchers against the properties and behavior of the leadership of the companion in the Society of Al-Awwaliyah 2) analyze the relationship between productivity breeder with productivity of livestock in the Society of Al-Awwaliyah 3) identify the relationship perceptions of ranchers against the leadership companion with productivity of livestock in the Society of Al-Awwaliyah , The data used in this study are primary and secondary data. Primary data were obtained from questionnaires which stem from ranchers while secondary data sourced from literature in the form of books and articles. Data processing was performed using Chi-square analysis using SPSS software version 21. One of the factors relating to the productivity of ranchers is the perception of ranchers against the leadership of their companion. Leadership companion views of the nature and behavior of which is owned by a companion. Productivity ranchers indirectly related to the productivity of the cattle business. Characteristics breeder visits of age, years of education, experience ranchers, and businesses in addition to ranchers. The results of data analysis showed that there is a significant relationship between business other than ranchers with ranchers productivity. The relationship between the perception of the nature of the companion breeder with productivity ranchers produce Pearson Chi-Square value is 9.751 and Asymp. Sig. (2-sided) of 0.002. This is due to interest ranchers against leadership qualities possessed by a companion who produce prolific ranchers. Ranchers consider that a companion of his leadership qualities are ideal as a companion.


2018 ◽  
Vol 34 (1) ◽  
Author(s):  
Dewi Rosiana ◽  
Achmad Djunaidi ◽  
Indun Lestari Setyono ◽  
Wilis Srisayekti

This study aims to describe the effect of sanctions (individual sanctions, collective sanctions, and absence of sanctions) on cooperative behavior of individuals with medium trust in the context of corruption. Both collective sanctions and individual sanctions, are systemic, which means sanctioning behavior is exercised not by each individual but by the system. Cooperative behavior in this context means choosing to obey rules, to reject acts of corruption and to prioritize public interests rather than the personal interests. Conversely, corruption is an uncooperative behavior to the rules, and ignores the public interest and prioritizes personal interests. Research subjects were 62 students. The Chi-Square Analysis was used to see the association between the variables and the logistic regression model was applied to describe the structure of this association. Individual sanction is recommended as punishment to medium trust individuals to promote cooperative behavior in the context of corruption. The results showed that individuals with medium trust had more cooperative behavior.


2019 ◽  
pp. 113-118

Background Suppression is associated with binocular vision conditions such as amblyopia and strabismus. Commercial methods of testing fusion often only measure central fusion or suppression at near. The purpose of this pilot study was to assess a new iPad picture fusion test that assesses foveal and central fusion at near. Methods Participants aged 5 years and older presenting for eye examination at The Ohio State University College of Optometry were enrolled. Results from visual acuity, dry and wet refraction/retinoscopy, stereopsis and cover testing were recorded from the patient chart. The iPad picture fusion test, Worth four-dot, Worth type test with foveal letter targets, and Polarized four-dot were performed by one examiner in a randomized order at 40 cm. Testing was repeated with the anaglyphic filters reversed. Crosstabulation and McNemar chi-square analysis were used to compare the results between fusion testing devices. Results Of the fifty participants (mean age = 17.5), twelve reported suppression and one reported diplopia. Testability was excellent for all tests (98% to 100%). There were no significant differences between tests in reported results (P ≥ 0.22 for all comparisons). No difference in reported fusion or suppression status was observed with change in orientation of the anaglyphic filters. Six participants reported foveal suppression alone at near which was not identified with Worth four-dot at near. Conclusion The iPad picture fusion test provided excellent testability and agreement with commonly used tests of fusion and allowed testing of both central and foveal fusion at near. Nearly half (46%) of participants with suppression reported foveal suppression, supporting the importance of testing for foveal suppression.


2020 ◽  
Vol 5 (2) ◽  
pp. 240-249
Author(s):  
Satrio Wibowo Rahmatullah ◽  
◽  
Ika Maulida Nurrahma ◽  
Adnan Syahrizal

Compliance to achieve treatment success can be improved by providing drug information services (PIO) and counseling to improve understanding of treatment instructions. The general objective of this study was to determine the effect of drug information service and counseling on the level of medication adherence in patients with diabetes mellitus (DM) with hypertension in the Banjarbaru Regional Hospital. This study uses a quasi experimental method with a cross sectional approach and takes patient data prospectively. The results of this study indicate that the group given PIO and counseling showed a high level of adherence as many as 20 respondents (100%). Whereas in the group that was not given PIO and the counseling level of adherence was low, there were 4 respondents (20%). Based on the mann-whitney analysis p-value = 0,000 (<α = 0.05) so that there are differences in the group with PIO and counseling with groups without PIO and counseling, while the chi square analysis p-value = 0.004 (<α = 0 , 05) so that PIO and counseling have a significant effect on the level of adherence to taking medication in patients with DM with hypertension at the Banjarbaru Regional Hospital.


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