scholarly journals Evaluation of Brassica Juncea Germplasm through heritability estimation and correlation analysis

2017 ◽  
pp. 22-25
Author(s):  
Fawad Ali ◽  
Bakhat Hussain ◽  
Javed Ali, Mehran Ayoob Tunio
Keyword(s):  
Correlation Analysis ◽  
Brassica Juncea ◽  
Seed Yield ◽  
Genetic Parameters ◽  
Broad Sense ◽  
Yield Traits ◽  
Broad Sense Heritability ◽  
Heritability Estimation ◽  
The University ◽  
Pod Length

The experimental material was planted at the University of Agriculture, Peshawar to estimate genetic parameters of heritability and correlation for yield traits of indigenous Brassica Juncea genotypes. RCB design with three replications was used to sow 20 Brassica genotypes. Highly significant genetic variations were obtained among studied parameters. Days to half flowering revealed positive associations with primary branches per plant (r= 0.337**). Primary branches per plant was positively correlated with pod length (r= 0.407**), seed per pod (r= 0.418**) seed yield per plant (r= 0.479**). Similarly, pod length showed positive correlation with seed per pod (r= 0.324*) and seed yield per plant (r= 0.331**), while seed per pod was positively correlated with seed yield per plant (r= 0.878**). Highest broad-sense heritability was recorded for seed yield per plant (0.97), while lowest heritability was estimated for primary branches per plant (0.46).

scholarly journals Estimating genetic variability, gene effect, heritability, and genetic advance of yield component agronomic traits: towards the improvement of peanut agronomic traits.

2021 ◽  
Author(s):  
Addisu Getahun
Keyword(s):  
Growth Rate ◽  
Seed Yield ◽  
Agronomic Traits ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Genetic Advance ◽  
Seed Length ◽  
Pod Yield ◽  
Seed Width ◽  
Pod Length

Abstract Background: Peanut is an important oil and legume food crop for human and feed for livestock. Peanut yield association characters like pod and seed traits are the most widely targeted parameter. Peanut yield is a function of growth rate, duration of reproductive growth, and the fraction of crop growth rate which are partitioned toward pod yield. For effective selection, heritability along with genetic advance is more useful than the estimation of only heritability. Methods: The present study field design was laid out using single row and single plot techniques. Pod length, pod width, pod length by width, seed length, seed width, seed length by width yield contributing data were collected both from two parents and 251 RIL populations across two locations in two consecutive cropping seasons (2015/2016 & 2016/2017). Data analysis was computed through SAS ver.9.4 and PBTools ver.1.4. Results: The highest genotypic coefficient of variation was found in pod length (22.47), number of pods per plant (23.66), pod yield per plant (28.43), multiple seedpods per plant (30.44). The highest narrow sense heritability was found in seed length (66%), pod length by width (87%), and pod thickness (93%), meanwhile, the highest broad sense heritability values have been recorded in seed length (99%), seed length by width (99%), number of pods per plant (95%), shelling percentage (94%), pod thickness (93%), thickness of pod shells (92), seed yield per plant (89%), seed thickness (87%), seed width (83%), multiple seedpods per plant (79%), and pod weight per plant (75%). The highest genetic advance as percent of mean values occurred in multiple seedpods per plant (215.44), number of pods per plant (85.28), pod yield per plant (64.90), seed yield per plant (63.49), thickness of pod shells (56.87), pod length by width (36.55), seed length by width (30.98), and seed length (23.26). Conclusions: Additive gene effects were observed in the traits of seed length, seed length by width, pod length, pod width, pod length by width, pod thickness, thickness of pod shells, and multiple seedpods per plant. The highest broad sense heritability values coupled with high genetic gain were estimated in multiple seedpods per plant, number of pods per plant, pod weight plant, seed weight per plant, thickness of pod shells, pod length by width, seed length by width. Therefore, in the present study, use more pod and seed-related traits than the previous findings.

scholarly journals Heritability estimation in early generations of two-way crosses in soybean

Bragantia ◽  
2008 ◽  
Vol 67 (1) ◽  
pp. 101-108 ◽  
Author(s):  
Marcelo Marchi Costa ◽  
Antonio Orlando Di Mauro ◽  
Sandra Helena Unêda-Trevisoli ◽  
Nair Helena Castro Arriel ◽  
Ivana Marino Bárbaro ◽  
...  
Keyword(s):  
Genetic Parameters ◽  
Genetic Variance ◽  
Selection Process ◽  
Broad Sense ◽  
Selection Methods ◽  
Narrow Sense ◽  
Breeding Programs ◽  
Heritability Estimation ◽  
The Family ◽  
Simple Selection

The estimation of genetic parameters, especially in early generations, is very useful for directing the selection process in breeding programs. The present research was undertaken to estimate heritabilities in the broad sense, narrow sense and using parent-offspring regression in F3 soybean populations from six two-way crosses, originated from the Soybean Breeding Program of Faculdade de Ciências Agrárias e Veterinárias (UNESP), Jaboticabal campus. It was used the family design with common checks located ten plots apart. It was observed highly significant differences among families. The experimental coefficient of variation (CVe), the CVg/CVe ratio and the heritability showed wide variation among traits, being the highest values found for number of pods, number of seeds and grain yield, making evident the existence of variance to be exploited by breeding. The estimation of the heritability coefficients in the broad sense, narrow sense and by regression were close in most of the situations, showing that the largest part of genetic variance is of additive nature, in which simple selection methods can lead to satisfactory genetic gains.

scholarly journals EFFECT OF SOWING METHODS AND PICKING INTERVALS ON THE FRESH YIELD AND SEED PRODUCTION OF OKRA (ABELMOSCHUS ESCULENTUS L.)

2021 ◽  
Vol 27 (3) ◽  
pp. 407-418
Author(s):  
Sana Ullah
Keyword(s):  
Seed Yield ◽  
Seed Weight ◽  
Integrated Management ◽  
Germination Percentage ◽  
Fruit Weight ◽  
Significant Loss ◽  
Cyperus Rotundus ◽  
The University ◽  
Pod Length ◽  
100 Seed Weight

To study the effect of various planting beds and picking time on yield of okra, a research study was conducted at Horticulture Research Farm, Malakander, The University of Agriculture Peshawar, Pakistan. Okra seeds of cultivar Swat Green were planted into two different types of sowing methods (ridges and flat beds), and reduced to various number of picking (3, 4, and 5 intervals). The results of the present study revealed that okra plants sown on the ridges recorded maximum germination percentage (96.9%), fruit weight (22.41g), pod length (14.44 cm), seed pod-1 (48), 100 seed weight (6.41 g), seed yield (102.2 kg ha-1) and fresh yield (0.165 tons ha-1). Data regarding number of picking intervals showed that maximum germination percentage (92.7%), fruit weight (20.97 g), pod length (12.25 cm), highest seed yield (103.3 kg ha-1), and seed pod-1 (43) were recorded in 3 pickings. Whereas, data for maximum 100 seed weight (6.6 g) for picking intervals was recorded in 4 pickings and maximum fresh yield (0.148 tons ha-1) in 5 pickings. Infestation of weeds can cause a significant loss in okra yield which needs urgent integrated management. Cyperus rotundus, Echinochloa crusgalli and Digitaria sanguinalis were the main weeds observed during the study against which local farmers used various manual, mechanical and chemical control methods. It is concluded that okra plant sown on ridges and almost 3 picking intervals have significantly affected the growth and seed yield. Excessive use of chemical herbicides should be avoided to prevent environmental and human health hazards.

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.

Estimation of genetic variability for seed yield and its components in chickpea (Cicer arientinum L.) genotypes

2017 ◽  
Author(s):  
Aybegün Ton ◽  
Adem Emin Anlarsal
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Yield Component ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Design Data ◽  
Climate Conditions ◽  
100 Seed Weight

The present experiment was conducted to determine magnitude of genetic variability with fifteen kabuli chickpea genotypes in the 2013/2014 and 2014/2015 growing season under Mediterranean climate conditions. In this present study seed yield per plant and yield component were investigated. The experiment was orginazed with three replications in randomized complate blocks design. Data were recorded on plant height, number of branches per plant, height of first podding node, full and total pods number per plant, seeds number per plant, 100-seed weight and seed yield per plant. Analysis of variance for seed yield per plant and its component showed significant differences among all genotypes. Broad-sense heritability ranged from 12.27% (total pod number per plant) to 93.88% (100-seed weight). Moderate and high estimates of broad sense heritability were observed for branches number per plant, harvest index and 100-seed weight. It can be concluded that the seed yield of chickpea can be improved by selecting these characters in breeding chickpea materials.

scholarly journals Estimation of broad-sense heritability and variance components for seed yield and agronomic traits in native and exotic safflower (Carthamus tinctorius L.) genotypes

2018 ◽  
Vol 47 (3) ◽  
pp. 501-508 ◽  
Author(s):  
Zahra Tahernezhad ◽  
Jalal Saba ◽  
Mehrshad Zeinalabedini ◽  
Seyyed Safid Pourdad ◽  
Mohammad Reza Ghaffari
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Coefficient Of Variation ◽  
Variance Components ◽  
Seed Weight ◽  
Agronomic Traits ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Physiological Maturity ◽  
Number Of Seeds

This study was conducted to estimate broad-sense heritability and variance components for seed yield and some agronomic traits in 100 safflower genotypes. The experiments were carried out in two years at two locations in Iran. The number of seeds per capitol and harvest index had the highest genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV), respectively. The estimated broad-sense heritability for plant height, days to physiological maturity, 1000-seed weight, days to flowering, number of seeds per capitol, number of capitols per plant and seed yield were 86, 76, 74, 70, 68, 44 and 16%, respectively. It was found that plant height, days to physiological maturity, 1000-seed weight, days to flowering and number of seeds per capitol were the least influenced by the environment. The number of capitols per plant and seed yield were most affected by the environment.

scholarly journals Genetic variance and heritability estimation of hybridized pepper plants (Capsicum annuum L.) F2 progeny for begomovirus resistance in growth stage

2022 ◽  
Vol 951 (1) ◽  
pp. 012103
Author(s):  
E Kesumawati ◽  
Sabaruddin ◽  
E Hayati ◽  
N Hadisah ◽  
R Hayati ◽  
...  
Keyword(s):  
Growth Stage ◽  
Genetic Variance ◽  
Broad Sense ◽  
Phenotypic Variance ◽  
Broad Sense Heritability ◽  
Narrow Sense ◽  
Narrow Sense Heritability ◽  
Training Centre ◽  
Tertiary Branch ◽  
Heritability Estimation

Abstract Pepper is widely cultivated as a condiment and cash crop in Indonesia. However, Pepper yellow leaf curl disease (PepYLCD) caused by begomovirus is currently seriously affect the domestic pepper production. Breeding for begomovirus resistance material by crossing is currently necessary to overcome the constraint. The present study is aimed to determine the resistance of pepper (C. annuum) plants F2 progenies to begomovirus infection in the growth stage. Two local C. annuum accessions, BaPep-5 as a resistance donor for pepy-1 begomovirus resistance gene (locally called Perintis) and BaPep-4 as a susceptible parent (locally called Kencana) were crossed to generate F2 progenies. The research was conducted in Agricultural Extension Training Centre (BLPP) Saree and Horticulture Laboratory of Syiah Kuala University from February to July 2020. 500 F2 progenies were transplanted to the field along with 15 plants of each parent as control. The result suggested that plant height and crown width had the highest broad sense heritability value, whereas the dichotomous height, stem diameter, secondary branch, and tertiary branch had the lowest broad sense heritability value. Coefficient of genetic variance and coefficient of phenotypic variance from overall characteristics were relatively low which suggest the narrow sense to slightly narrow sense heritability.

scholarly journals Role of Some Genetic Parameters on Breeding Work for Resistance to Pre-Harvest

2012 ◽  
Vol 69 (1) ◽  
Author(s):  
Lupu Nicolae ◽  
Vasile Moldovan ◽  
Rozalia Kadar ◽  
Ionut Racz
Keyword(s):  
Genetic Parameters ◽  
Phenotypic Expression ◽  
Broad Sense ◽  
Quantitative Character ◽  
Broad Sense Heritability ◽  
Narrow Sense ◽  
Falling Number ◽  
Narrow Sense Heritability ◽  
Gene Effects

For wheat ( Triticum aestivum ), periods of prolonged rainfall and high humidity after the grain has ripened and before it can be harvested can contribute to, so called pre-harvest sprouting (PHS), which can be considered as a premature germination. PHS can be defined a complex quantitative character having two important components: sprouting score and falling number. The two these components are controlled by gene effects which are predominant of additive nature. Our research have been conducted on parental, F 1, F2, backcross generations means, from 4 cyclic crosses with common parents differing in their reaction to PHS and falling number. Broad sense heritability coefficients for PHS score showed high values in the case of majority hybrids that indicate the important role of genotype in phenotypic expression of reaction to sprouting. Concerning to falling number, broad sense heritability coefficients had smaller values. For wheat as a self pollinated crop, is preferable to be used narrow sense heritability which reflects additive genetic contribution to phenotypic expression of sprouting or falling number, because only additive gene effects can be fixed to progeny. When PHS score, or falling number have high values for narrow sense heritability (higher 50), is recommended the beginning of selection in F 2 and in these cases can be successful applied pedigree selection. Concluding, high heritabilities associated with other genetic parameters can be important tools at hand of breeders. They indicated that wheat selection for PHS tolerance or falling number would be effective in populations involving crosses of sensitive and tolerant parents.

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