Inheritance of the waxless character of Brassica napus Nilla glossy

1995 ◽  
Vol 75 (4) ◽  
pp. 893-894 ◽  
Author(s):  
Mo Jianguo ◽  
Li Wanqu ◽  
Yu Qin ◽  
R. P. Bodnaryk
Keyword(s):  
Brassica Napus ◽  
Genetic Marker ◽  
Oilseed Rape ◽  
Epicuticular Wax ◽  
Chi Square ◽  
Gene Pairs ◽  
Segregation Ratios ◽  
Key Words:Brassica ◽  
Chi Square Tests

Inheritance studies using two reciprocal and two backcross combinations made from a wax-less (Wl) line of oilseed rape, B. napus 'Nilla glossy' and two normal wax (Nwl) genotypes showed that the Wl character of Nilla glossy is recessive to the Nwl. Chi-square tests revealed that the segregation ratios of B1 and F2 plants fit 3:1 and 15:1 (Nwl:Wl) ratios, respectively, and these are consistent with the presence of two gene pairs. Key words:Brassica napus, epicuticular wax, genetic marker, cer mutant

Vernalization response in spring oilseed rape (Brassica napus L.) cultivars

1994 ◽  
Vol 74 (2) ◽  
pp. 275-277 ◽  
Author(s):  
L. A. Murphy ◽  
R. Scarth
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Vernalization Response ◽  
Brassica Napus L ◽  
Early Maturity ◽  
Breeding Programs ◽  
Cumulative Response ◽  
Cold Requirement ◽  
Key Words:Brassica

Early maturity is a major objective of oilseed rape (Brassica napus L.) breeding programs in western Canada. Maturity of crops is influenced by time of initiation and flowering. The presence of a vernalization requirement affects plant development by delaying floral initiation until the cold requirement of the plant has been satisfied. Five spring oilseed rape cultivars were screened for their response to vernalization. Vernalization treatments consisted of exposure of germinated seeds to 0–42 d at 4 °C. Plants were assessed under a 20-h photoperiod. In general, there was a cumulative response to vernalization, with a decrease in days to each developmental stage as exposure to 4 °C was increased. Vernalization treatment of 6 d at 4 °C was sufficient to decrease both the days to first flower and the final leaf number. The characterization of vernalization response is of interest because variation in flowering time in response to year-to-year variations in the environment could result. Key words:Brassica napus, canola, oilseed rape, vernalization

scholarly journals Genome Mining and Evaluation of the Biocontrol Potential of Pseudomonas fluorescens BRZ63, a New Endophyte of Oilseed Rape (Brassica napus L.) against Fungal Pathogens

2020 ◽  
Vol 21 (22) ◽  
pp. 8740
Author(s):  
Daria Chlebek ◽  
Artur Pinski ◽  
Joanna Żur ◽  
Justyna Michalska ◽  
Katarzyna Hupert-Kocurek
Keyword(s):  
Brassica Napus ◽  
Plant Growth ◽  
Pseudomonas Fluorescens ◽  
Oilseed Rape ◽  
Plant Growth Promotion ◽  
Fungal Pathogens ◽  
Growth Promotion ◽  
Genome Mining ◽  
Plant Colonization ◽  
Brassica Napus L

Endophytic bacteria hold tremendous potential for use as biocontrol agents. Our study aimed to investigate the biocontrol activity of Pseudomonas fluorescens BRZ63, a new endophyte of oilseed rape (Brassica napus L.) against Rhizoctonia solani W70, Colletotrichum dematium K, Sclerotinia sclerotiorum K2291, and Fusarium avenaceum. In addition, features crucial for biocontrol, plant growth promotion, and colonization were assessed and linked with the genome sequences. The in vitro tests showed that BRZ63 significantly inhibited the mycelium growth of all tested pathogens and stimulated germination and growth of oilseed rape seedlings treated with fungal pathogens. The BRZ63 strain can benefit plants by producing biosurfactants, siderophores, indole-3-acetic acid (IAA), 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and ammonia as well as phosphate solubilization. The abilities of exopolysaccharide production, autoaggregation, and biofilm formation additionally underline its potential to plant colonization and hence biocontrol. The effective colonization properties of the BRZ63 strain were confirmed by microscopy observations of EGFP-expressing cells colonizing the root surface and epidermal cells of Arabidopsis thaliana Col-0. Genome mining identified many genes related to the biocontrol process, such as transporters, siderophores, and other secondary metabolites. All analyses revealed that the BRZ63 strain is an excellent endophytic candidate for biocontrol of various plant pathogens and plant growth promotion.

scholarly journals What are the Most Widely Used and Effective Attack Coverage Systems in Men’s Volleyball?

2018 ◽  
Vol 62 (1) ◽  
pp. 111-121
Author(s):  
Raúl Hileno ◽  
Antonio García-de-Alcaraz ◽  
Bernat Buscà ◽  
Cristòfol Salas ◽  
Oleguer Camerino
Keyword(s):  
Mean Difference ◽  
First Line ◽  
Chi Square ◽  
Residuals Analysis ◽  
Specific Position ◽  
Pan American ◽  
Guiding Principles ◽  
High Level ◽  
Tests For Independence ◽  
Chi Square Tests

Abstract In volleyball, attack coverage is one of the play actions most neglected in coaching and research. The purpose of this study was to find out which attack coverage systems are used by high-level men’s teams in different game situations and the characteristics of the most effective systems. We analysed 15 matches from the 2010 Men’s Pan-American Volleyball Cup, with a total of 1,415 coverage actions. Chi-square tests for independence, adjusted residuals analysis and calculations of standardised mean difference were performed. The results show that high-level men’s volleyball uses many coverage systems other than the traditional 3-2-0 and 2-3-0. At this level of play, the most frequent systems were 1-3-1 and 1-2-2, which occurred significantly often at the culmination of a third-tempo attack at the wing. The most effective systems consisted of three coverage lines, with fewer than five players covering the spiker and at least one player in the first coverage line, in both the attack and counterattack phases. Given the large number of coverage systems identified in different game situations, we recommend flexible, loosely structured training in these systems, based on a set of guiding principles that all players on a team must internalise for the specific position they are playing. Regarding the systems’ efficacy, the main watchword is that on each coverage line there should always be at least one player, but the first line should not be exposed.

Generational differences in the placement of clitic se in New York City Spanish

2021 ◽  
pp. 136700692110165
Author(s):  
Kevin Martillo Viner
Keyword(s):  
New York ◽  
New York City ◽  
York City ◽  
Internal Variables ◽  
Chi Square ◽  
Ongoing Research ◽  
External Variables ◽  
Two Generations ◽  
Finite Verb ◽  
Chi Square Tests

Aims and objectives: This study analyzes the proclitic and enclitic positions of Spanish clitic se (e.g., ella se quería ir / ella quería irse ‘she wanted to go’) across two generations of Spanish speakers in New York City. In an effort to contribute to ongoing research aimed at better understanding Spanish in the US, the following questions are addressed. In syntactic environments that permit variation, does placement of Spanish se differ between the two generations? From the internal variables identified for this study (nonfinite verb type, finite verb, tense of finite verb, grammatical person, use of se, grammatical mood of finite verb, negation), which ones have a statistically significant effect on placement? From the external variables identified for this study (national origin, region, areal origins, sex, age, years in US, socioeconomic class, education, English skill, Spanish skill, general Spanish use), which ones have a statistically significant effect on placement? Design and data: This study is carried out within a variationist-sociolinguistic framework and the sample consists of 50 participants, 25 from the first generation (G1) and 25 from the second (G2). Analysis: Bivariate chi-square tests are performed in order to determine what internal and external variables constrain placement of the dependent variable (clitic se placement). Findings: Generation has a statistically significant effect on placement ( p = .016), wherein proclisis is more frequent amongst the G2 participants. These results corroborate previous research showing an overall preference for proclisis in both monolingual and bilingual/heritage speakers. Further, chi-square tests pinpoint five conditioning effects for G1 (nonfinite verb type, use of se, finite verb, years in US, and English skill), but only two for G2 (use of se and English skill). Originality and implications: The present study is the first to discover strong correlations between the proclitic position and the numerous internal and external variables quantitatively assessed. Future research is thus warranted.

Amino acid contents and transport in oilseed rape (Brassica napus L.) under different nitrogen conditions

Planta ◽  
2004 ◽  
Vol 221 (3) ◽  
pp. 328-338 ◽  
Author(s):  
Jens Tilsner ◽  
Nina Kassner ◽  
Christine Struck ◽  
Gertrud Lohaus
Keyword(s):  
Amino Acid ◽  
Brassica Napus ◽  
Oilseed Rape ◽  
Brassica Napus L ◽  
Amino Acid Contents ◽  
Nitrogen Conditions

Effects of abscisic acid and temperature on erucic acid accumulation in oilseed rape (Brassica napus L.)

1997 ◽  
Vol 150 (4) ◽  
pp. 414-419 ◽  
Author(s):  
Jeroen A. Wilmer ◽  
Johannes P.F.G. Helsper ◽  
Linus H.W. van der Plas
Keyword(s):  
Abscisic Acid ◽  
Brassica Napus ◽  
Erucic Acid ◽  
Oilseed Rape ◽  
Brassica Napus L ◽  
Acid Accumulation
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