Phenotypic diversity analysis and performance of elite lines of Brassica napus L.

2021 ◽  
Vol 50 (1) ◽  
pp. 1-6
Author(s):  
Muhammad Sajjad Iqbal ◽  
Muhammad Akbar
Keyword(s):  
Brassica Napus ◽  
Plant Height ◽  
Seed Yield ◽  
Large Scale ◽  
Phenotypic Diversity ◽  
Phenotypic Traits ◽  
Brassica Napus L ◽  
Days To Maturity ◽  
Pakistani Origin ◽  
Pod Length

Thirteen elite lines of Brassica napus L. were tested. Nine phenotypic traits viz., days to 50% flowering, days to maturity, plant height, branches, pods, pod length, pod width, pod weight and seed yield were studied. ANOVA revealed significant results for all the traits while summary statistics exhibited high level of genetic variability in days to 50% flowering, days to maturity, plant height and number of pods. On the other hand, number of branches, pod length, pod width, pod weight and seed yield need more attention for improvement. Coefficient of correlation revealed significant combinations among various traits which could be utilized directly. Cluster analysis based on linkage distances described grouping pattern into three clusters for dissimilarities. Elite line 24866 of Pakistani origin placed in separate cluster prominently that is due to best performance for maximum traits, hence recommended for farmers’ field large scale cultivation.

Genetic Variability, Correlation and Path Analysis in Advanced Lines of Rapeseed (Brassica Napus L.) for Yield Components

2014 ◽  
Vol 47 (1) ◽  
pp. 71-79 ◽  
Author(s):  
Ejaz Ul-Hasan ◽  
H.S.B. Mustafa ◽  
Tahira Bibi ◽  
T. Mahmood
Keyword(s):  
Brassica Napus ◽  
Path Analysis ◽  
Plant Height ◽  
Seed Yield ◽  
Yield Components ◽  
Seed Weight ◽  
Significant Positive Correlation ◽  
Brassica Napus L ◽  
Yield Improvement ◽  
Days To Maturity

ABSTRACT The present research was carried out to determine the best selection criteria for yield improvement in rapeseed (Brassica napus L.). Nine genotypes of Brassica napus were sown at Oilseeds Research Institute, Faisalabad, during the years 2011- 2012, to evaluate the means and components of variability (genotypic and phenotypic), heritability (h2 B.S), correlation (genotypic and phenotypic) and path analysis for yield and various yield components. At phenotypic and genotypic level, seed yield/plant had significant positive correlation with plant height, seeds/plant and siliqua/plant. A positive and highly significant genetic relationship was found between plant height and seeds/plant, siliqua length and seeds/siliqua, days to maturity and 1000 seed weight, days to flowering and seeds/plant, days to maturity and seeds/plant. Path coefficient revealed that the seeds/siliqua, 1000 seed weight, days to flowering, days to maturity and seeds/plant had direct positive contribution towards seed yield per plant. For rapeseed breeding seed per plant was the variable with maximum potential of selection for seed yield improvement because this trait possessed high h2 B.S, highly significant positive correlation and maximum positive direct effects with yield

scholarly journals Genetic potential and heritability estimates of yield and yield associated traits in rape seed Brassica napus L

2015 ◽  
Vol 4 (2) ◽  
pp. 330-340
Author(s):  
Sadia Shaukat ◽  
Dr Raziuddin ◽  
Fahim Ullah Khan ◽  
Ibni Amin Khalil
Keyword(s):  
Brassica Napus ◽  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Yield Component ◽  
Brassica Napus L ◽  
Mean Values ◽  
Effective Selection ◽  
Heritability Estimates ◽  
Pod Length

To investigate genetic variability and heritability, eight Brassica napus genotypes were evaluated at New Developmental Research Farm, Faculty of Agriculture. Peshawar University, during 2010-11. Analysis of variance revealed significant differences (P≤0.01) among Brassica napus genotypes for all the studied characters. Mean values showed that maximum primary branches plant-1 (15) was observed for genotype PGRI-8, plant height (220.66 cm) for genotype CH-6 and PGRI-8, pods main raceme-1 (96.33) for genotype CH-1, pods plant-1 (994) for genotype PGRI- 8, pod length (8.3 cm) for genotype PGRI- 7, seeds pod-1 (27) for genotype CH-1, 1000-seed weight (3.97 g) for genotype CH-2, and seed yield plant-1 (91.1 g) for genotype PGRI-8. In t terms of heritability values, high broad sense heritability estimates were observed for primary branches plant-1 (0.83), plant height (0.78), pods main raceme-1 (0.65), seeds pod-1 (0.61), 1000-seed weight (0.61), while moderate heritability values were recorded for pod length (0.57), pods plant-1 (0.55), and seed yield plant-1 (0.50). In conclusion, the significant differences among Brassica napus genotypes showed that there is sufficient variability for effective selection. The trend of heritability (moderate to high) in the present study indicates that there is more genetic control and selection should lead to quick improvement. Furthermore genotype PGRI-8 surpassed all other genotypes in yield and yield component and could be used in future breeding programs. DOI: http://dx.doi.org/10.3126/ije.v4i2.12661 International Journal of Environment Vol.4(2) 2015: 330-340

scholarly journals Effects of sulphur on the yield, yield component characters and oil content of oilseed rape

2021 ◽  
Vol 66 (1) ◽  
pp. 17-25
Author(s):  
Valiollah Rameeh ◽  
Maryam Niakan ◽  
Mohammad Mohammadi
Keyword(s):  
Brassica Napus ◽  
Plant Height ◽  
Oilseed Rape ◽  
Seed Yield ◽  
Oil Content ◽  
Statistical Difference ◽  
Mean Value ◽  
Yield Component ◽  
Brassica Napus L ◽  
Significant Statistical Difference

The effects of four sulphur levels: S0, S1, S2 and S3, including 0, 12, 24 and 36 kg S ha-1, respectively, along with 115 kg N ha-1 were studied on yield-related traits of oilseed rape (Brassica napus L.). The significant variance of treatments was determined for plant height, yield component characters, seed yield and oil content. The sulphur application significantly increased most of the traits compared to the S0 level. The S3 (36 kg S ha-1) treatment led to the highest mean value of plant height (132 cm) which was classified with S2 (24 kg S ha-1) in the same statistical group. Sulphur had an increasing effect on pods per plant, and it ranged from 92 to 196 for S0 and S3 applications, respectively. S0 and S1 with 92 and 121 pods per plant were grouped in the same statistical group. In addition, S2, and S3 with 165 and 196 pods per plant showed no significant statistical difference. The sulphur application significantly increased seed yield compared to control (S0 level), and it ranged from 2744 to 3215 kg ha-1 in S0 and S3, respectively. The average oil contents of 45.69, 46.96, 47.46 and 49.53 % were detected for 0, 12, 24 and 36 kg S ha-1, respectively.

scholarly journals Genetic Variability, Correlation and Path Coefficient Analysis in Advanced Generation of Brassica napus L.

2019 ◽  
pp. 1-12
Author(s):  
Md. Nur-E-Nabi ◽  
Md. Ehsanul Haq ◽  
Montasir Ahmed ◽  
Md. Monir Hossain ◽  
Md. Shefat-al-Maruf ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Genetic Variability ◽  
Plant Height ◽  
Seed Yield ◽  
Coefficient Of Variation ◽  
Yield Potential ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Brassica Napus L ◽  
Positive Direct

The present study was conducted involving 62 F3 genotypes of Brassica napus L. at the experimental farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh to ponder the genetic variability, phenotypic, genotypic and environmental coefficient of variation, heritability and genetic advance, correlation, path coefficient and genetic diversity analysis in a randomized complete block design (RCBD) with sixty-two genotypes (treatments) with three replications during November 2014 to February 2015. The investigations aimed to select the best segregating genotypes for the yield improvement of Brussica napus (rapeseed). Analysis of variance indicated that the genotypes were found significantly different for all the characters considered. The relative phenotypic coefficient of variation (PCV) was higher than the genotypic coefficient of variation (GCV) for all the traits investigated. The high GCV value was observed for the number of siliqua per plant (NSP), plant height (PH), silique length (SL), number of seed per silique (NSS) and seed yield per plant (SYP) indicated high broad sense heritability. The significant positive correlation with seed yield per plant (SYP) was found in plant height (PH) (0.368**), the number of primary branches per plant (NPB) (0.332**), number of secondary branches per plant (NSB) (0.382**), number of silique per plant (NSP) (0.549**), and siliqua length (SL) (0.037**). The results of path coefficient analysis uncovered that plant height (PH) (0.582), days to 50% flowering (50F) (0.390), days to maturity (DM) (0.575), number of primary branches per plant (NPB) (0.678), number of secondary branches per plant (NSB) (0.182),and thousand seed weight (TSW) (0.289) had a positive direct impact on seed yield per plant (SYP) and thus it was concluded that these traits could be exploited for the enhancement of yield potential of rapeseed. This study showed that based on the agronomic performance execution, genotypes G8, G14, G19, G21, G47, and G55 might be proposed for future hybridization program in Bangladesh and this could help rapeseed breeders to upgrade their breeding activities.

scholarly journals Genetic analysis of Plant Height, Yield Components and Seed Yield in Rapeseed (Brassica Napus L.) Cultivars

2014 ◽  
Vol 67 (1) ◽  
pp. 61-74
Author(s):  
Valiollah Rameeh
Keyword(s):  
Brassica Napus ◽  
Plant Height ◽  
Seed Yield ◽  
Combining Ability ◽  
Seed Weight ◽  
Main Axis ◽  
Brassica Napus L ◽  
Narrow Sense Heritability ◽  
Recessive Genes ◽  
Additive Genetic Effects

Abstract Half F2 diallel crosses of spring rapeseed (Brassica napus L.) varieties along with their parents were evaluated for plant height, first siliqua height, siliquae on main axis, siliquae per plant, 1000-seed weight and seed yield. The Analysis of variance based on Cockerham’s method revealed significant mean squares of general combining ability (GCA), specific combining ability (SCA) for all the traits indicating that both additive and non-additive genetic effects were involved in controlling these traits. Parent vs crosses mean square which is indicating average heterosis was significant for all the traits. In Hayman’s method the regression lines estimated for all the traits except plant height cut the Wr axis below the origin in the negative zone, suggesting the overdominance type of gene action for these traits except plant height. Based on the array points on the regression lines, 19H had maximum dominant genes for siliquae on main axis, siliquae per plant 1000-seed weight and seed yield, being closest to the origin, while 0ption500 possessed recessive genes for first siliqua height, siliquae per plant and 1000-seed weight, as evidenced by its distant position from the origin. Due to low narrow-sense heritability estimates for most of the traits, selection for improving these traits should be carried out in delayed segregating generations.

Assessment of agronomic performance and heterosis for agronomic traits in hybrid high erucic acid rapeseed (HEAR)

2009 ◽  
Vol 89 (2) ◽  
pp. 227-237 ◽  
Author(s):  
R. D. Cuthbert ◽  
G. Crow ◽  
P. B. E. McVetty
Keyword(s):  
Brassica Napus ◽  
Erucic Acid ◽  
Seed Yield ◽  
Agronomic Traits ◽  
Brassica Napus L ◽  
High Erucic Acid ◽  
High Erucic Acid Rapeseed ◽  
Days To Maturity ◽  
The University ◽  
Seed Yields

Twelve genetically diverse and geographically distinct high erucic acid rapeseed (HEAR) Brassica napus L. cultivars/lines were selected and crossed by hand emasculation in a topcross design to produce 45 F1 hybrid combinations. Seven of the twelve parents were HEAR cultivars/lines developed by the University of Manitoba (UM) and the remaining five parents were proprietary European (EU) HEAR cultivars/lines. Adequate seed was produced to evaluate the hybrids and parents in replicated yield trials in six environments in Manitoba during 2004 and 2005. Vigor, days to first flower, days to maturity, lodging, plant height, and seed yield were assessed. The hybrids were generally more vigorous, taller and more lodging resistant than their parents with similar days to first flower and days to maturity as their earlier parents. The best hybrids in this study displayed high parent heterosis for seed yield of up to 143% and commercial heterosis for seed yield of up to 99%. These hybrids were from the most genetically diverse UM × EU crosses. HEAR hybrids appear very promising approach to increase seed yields in this crop. Key words: Brassica napus L., HEAR, heterosis, hybrids, genetic diversity

scholarly journals Interrelationship between yield and yield related traits of spring canola (Brassica napus L.) genotypes

Genetika ◽  
2007 ◽  
Vol 39 (3) ◽  
pp. 325-332 ◽  
Author(s):  
Sonja Ivanovska ◽  
Cane Stojkovski ◽  
Zoran Dimov ◽  
Ana Marjanovic-Jeromela ◽  
Mirjana Jankulovska ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Seed Yield ◽  
Seed Weight ◽  
Coefficient Of Determination ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Brassica Napus L ◽  
Plant Seed ◽  
Spring Canola ◽  
Pod Length

The research was conducted in order to determine yield related characters which are more effective as selection criteria than yield itself. Three spring canola (Brassica napus L.) genotypes have been investigated for plant height, number of primary branches (including the main raceme), number of pods per plant, pod length, number of seeds per pod, seed weight per pod and 1000 seed weight and their correlations with seed yield per plant. Seed yield had highest correlation with number of pods per plant (r= 0.935 and r= 0.973 in Skopje and Strumica, respectively), followed by seed weight per pod (r= 0.693 and r= 0.729) and 1000 seed weight (r= 0.627 and r= 0.680). Path coefficient analysis was used to identify the direct and indirect effect of studied characters on seed yield. Number of pods per plant (p=0.759 and p=0.877 for Skopje and Strumica, respectively) and seed weight per pod (p=0.216 and p=0.225) had the highest direct effect on seed yield in both locations followed by 1000 seed weight (p=0.056 and p=0.010). The coefficient of determination (R2) was 0.943.

Study on genetic variability and character association in soybean [Glycine max (L.) Merrill] germplasm at vindhyan zone of Uttar Pradesh

2016 ◽  
Vol 35 (1) ◽  
Author(s):  
Nutan Prateek Ekka ◽  
Gabrial M. Lal
Keyword(s):  
Correlation Analysis ◽  
Grain Yield ◽  
Plant Height ◽  
Seed Yield ◽  
Coefficient Of Variation ◽  
Flowering Plant ◽  
Phenotypic Correlation ◽  
Days To Maturity ◽  
Seed Index ◽  
Pod Length

The present research was conducted to analysis of variance was significant for all characters days to 50% flowering, plant height (cm), branches per plant, clusters per plant, pods per plant, days to maturity, pod length (cm), seeds per pod, seed index (100 seed weight), seed yield per plant (g). Based on the mean performance among 20 genotypes, SL-778 (17.86) followed by PS-1447 (11.54) were found to the best genotypes for seed yield per plant indicating the presence of amount of variation for these characters. High heritability was observed for grain yield per plant (95%) and number of pods per plant (94%). Moderate values of genetic advance was observed for pods per plant (13.25) followed by days to maturity (12.69). Genotypic correlation analysis indicates that pods per plant (0.748**), seed index (0.665**), clusters per plant (0.489**), plant height (0.485**) and pod length (0.481**) showed positive significant association with grain yield per plant. Phenotypic correlation analysis indicates that pods per plant (0.723**), seed index (0.586**), plant height (0.456**), clusters per plant (0.430*) and pod length (0.348*) showed positive significant association with seed yield per plant. The results indicated of phenotypic coefficient of variation (PCV) were slightly higher than those of genotypic coefficient of variation (GCV) for all the traits studied. Slight differences indicated minimum environmental influence and consequently greater role of factors on the expression of the traits.

Combining ability, heterotic grouping and patterning of mungbean [Vigna radiata (L.) Wilczek] lines for high seed yield

2016 ◽  
Author(s):  
Chandra Mohan Singh ◽  
Madhuri Arya ◽  
S. B. Mishra ◽  
Anil Pandey
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Combining Ability ◽  
Diallel Analysis ◽  
Plant Seeds ◽  
Days To Maturity ◽  
Heterotic Grouping ◽  
Seed Index ◽  
Pod Length ◽  
High Seed Yield

An investigation was done to study the combining ability, heterotic grouping and patterning of mungbean lines using diallel analysis. The parents viz DMS-03-17-2 (for days to maturity, primary branches per plant, secondary branches per plant, seeds per pod, seed index, harvest index, seed yield per plant); IPM-2K-14-9 (for plant height); Meha (for primary branches per plant, secondary branches per plant, average intermodal length, pod length, seeds per pod & seed yield per plant); DMS-01-34-2 (for secondary branches per plant & seed index) and SML 1151 (for seed index) were found best general combiners, whereas crosses namely IPM-2K-14-9/ DMS 03-17-2 (for plant height), SML 1151/ DMS 01-34-2 (seed index) and SML 1151/ Meha, IPM-2K-14-9/ Meha, IPM-2K-14-9/ DMS 03-17-2 & Meha/ DMS 01-34-2 (for seed yield/ plant) were top specific combiners and heterotic for respective traits. The pattern of heterotic grouping based on seed size and yield indicated that, heterosis was not only dependent upon the genetic distance between clusters; diversity within group was also showing remarkable heterosis.

EFFECTS OF THE MUTAGENIC AGENT ETHYL METHANESULFONATE ON THE M1 GENERATION OF RAPE (BRASSICA NAPUS)

1972 ◽  
Vol 52 (1) ◽  
pp. 53-62 ◽  
Author(s):  
D. B. FOWLER ◽  
B. R. STEFANSSON
Keyword(s):  
Brassica Napus ◽  
Seed Size ◽  
Seed Yield ◽  
Ethyl Methanesulfonate ◽  
Brassica Napus L ◽  
Plant Vigor ◽  
First Order ◽  
Mutagenic Agent ◽  
Days To Maturity

Germination of rape (Brassica napus L.) seed exposed to ethyl methanesulfonate (EMS) for 12 hr at 20–25 C was differentially affected by EMS concentration, pH of treatment solution, seed size, and strain treated. All first order interactions among treatments, except EMS concentration × strain, significantly affected germination. Increasing EMS concentration from 0 to 1.0% adversely affected germination, plant vigor, and seed yield and increased the number of abnormal plants and the days to maturity in M1 populations. The types of plant abnormalities observed following EMS treatment are described.

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