scholarly journals Genetic variation for Vegetative and Reproductive Traits in Mulberry (Morus spp) Accessions

2021 ◽  
pp. 113-120
Author(s):  
C. Sushmitha ◽  
. Chikkalingaiah ◽  
S. Murali ◽  
B. N. Ahalya
Keyword(s):  
Moisture Content ◽  
Coefficient Of Variation ◽  
Winter Season ◽  
Reproductive Traits ◽  
Flower Initiation ◽  
Single Leaf ◽  
Leaf Yield ◽  
Different Seasons ◽  
High Heritability ◽  
Morus Spp

Aims: To assess genetic variability for vegetative and reproductive traits in different seasons. Study Design: Field experimental design was used. Place and Duration of Study: The experiment was conducted in different seasons during 2019-20 at Department of Sericulture, University of Agricultural Sciences, GKVK, Bangalore. Methodology: The present study comprised of Seventy one mulberry accessions. Results: The mean performance of leaf moisture content (64.41 & 55.42%) and leaf yield (1268.71 & 872.21g) in rainy and winter season, respectively. There are large differences were observed between the minimum and maximum range leaf moisture content was varied from 45.16 to 78.51 per cent and leaf yield was varied from 235.90 to 29008.89 during rainy season. In winter season the range of leaf moisture content was varied from 15.28 to 72.35 per cent and leaf yield was varied from 94.43 to 2975.00 g. Phenotypic coefficient of variation (PCV %) was found to be higher than the respective genotypic coefficient of variation (GCV %) for all the characters denoting variability among genotypes in both the seasons. Estimates of phenotypic and genotypic coefficient of variations were high for leaf yield per plant (98.63, 98.49%) and (89.69, 89.62%) in rainy and winter season, respectively. Maximum heritability was observed for leaf yield per plant (99.71 %), (99.85 %) in rainy and winter season, respectively. High heritability coupled with high genetic advance as percent of mean in respect of number of days for first flower initiation, plant height and single leaf area at 45th, 60th, and 75th DAP, number of branches, leaf moisture content and leaf yield per plant was observed in rainy and winter seasons.

scholarly journals Genotype x Environmental Interaction for Growth and Yield Parameters of Tree Mulberry Genotypes in Different Seasons

2020 ◽  
pp. 6-12
Author(s):  
B. N. Ahalya ◽  
. Chikkalingaiah ◽  
H. D. Jayaramu ◽  
S. Chandrashekar
Keyword(s):  
Moisture Content ◽  
Moisture Retention ◽  
Retention Capacity ◽  
Fresh Leaf ◽  
Single Leaf ◽  
Leaf Weight ◽  
Leaf Yield ◽  
Number Of Leaves ◽  
Moisture Retention Capacity ◽  
Number Of Branches

Aims: To identify the stable genotypes across the seasons for different yield and its contributing traits. Study Design: Field experimental design was used Place and Duration of Study: The experiment was conducted in different seasons during 2017-19 at Department of Sericulture, University of Agricultural Sciences, GKVK, Bangalore. Methodology: The present study comprised of six mulberry genotypes viz., MI-012, MI-79, MI-21, MI-139, MI-516, ME-05 and two popular check varieties V1 and M5. Results: The mean squares due to seasons was significant for total shoot length (cm), number of leaves per plant, leaf yield per plant (g), ten fresh leaf weight (g), leaf moisture content (%) at harvest, leaf moisture retention capacity (%) at 6 and 9 hrs after harvest. Analysis of variance indicated high significance of mean sum of squares due to season for number of branches per plant, number of leaves per plant, leaf yield per plant, single leaf area, moisture content and moisture retention capacity at 6 and 9 hrs after harvest of leaf. Further, it could be observed that variance due to seasons (linear) were highly significant for number of branches per plant, total shoot length, number of leaves per plant, ten fresh leaf weight, leaf yield per plant, single leaf area, moisture content and moisture retention capacity at 6 and 9 hrs after harvest of leaf. Whereas, variance due to G х S (linear) was non significant for shoot height, internodal distance, number of leaves per plant, ten fresh leaf weight, leaf yield per plant, moisture content and moisture retention capacity at 6 and 9 hrs after harvest of leaf. Variance due to pooled deviation was highly significant for shoot height, number of branches per plant, total shoot length, internodal distance, number of leaves per plant, ten fresh leaf weight, single leaf area, moisture content and moisture retention capacity at 6 and 9 hrs after harvest of leaf. Whereas, variance due to pooled deviation was non significant for leaf yield per plant.

scholarly journals Quinoa for the Brazilian Cerrado: Agronomic Characteristics of Elite Genotypes under Different Water Regimes

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1591
Author(s):  
Patrícia Carvalho da Silva ◽  
Walter Quadros Ribeiro Junior ◽  
Maria Lucrecia Gerosa Ramos ◽  
Sonia Maria Costa Celestino ◽  
Alberto do Nascimento Silva ◽  
...  
Keyword(s):  
Grain Quality ◽  
Winter Season ◽  
Field Conditions ◽  
Water Restriction ◽  
Water Regimes ◽  
Agronomic Characteristics ◽  
Relative Water ◽  
Different Seasons ◽  
The Relationship

Quinoa stands out as an excellent crop in the Cerrado region for cultivation in the off-season or irrigated winter season. Here, we tested the effects of different water regimes on the agronomic characteristics, physiology, and grain quality of different elite quinoa genotypes under field conditions. The experiment was conducted under field conditions at Embrapa Cerrados (Planaltina, DF, Brazil). The experimental design was in randomized blocks, in a split-plot scheme, with four replications. The plots were composed of 18 quinoa genotypes and modified BRS Piabiru (the currently used genotype), and the split-plots were divided into 4 different water regimes. The following variables were evaluated: productivity and productivity per unit of applied water (PUAA), plant height, flavonoids, anthocyanins, gas exchange, chlorophyll, leaf proline, and relative water content. Our results showed that water regimes between 309 and 389 mm can be recommended for quinoa in the Cerrado region. CPAC6 and CPAC13 presented the highest yield and PUAA under high and intermediate WRs, and hence were the most suitable for winter growth under irrigation. CPAC17 is most suitable for off-season growth under rainfed conditions, as it presented the highest PUAA under the low WRs (247 and 150). CPAC9 stood out in terms of accumulation of flavonoids and anthocyanins in all WRs. Physiological analyses revealed different responses of the genotypes to water restriction, together with symptoms of stress under lower water regimes. Our study reinforces the importance of detailed analyses of the relationship between productivity, physiology, and water use when choosing genotypes for planting and harvest in different seasons.

scholarly journals Standardizing the Hydrogel Application Rates and Foliar Nutrition for Enhancing Yield of Lentil (Lens culinaris)

Processes ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 420 ◽  
Author(s):  
Shashidhar K. Shankarappa ◽  
Samuel J. Muniyandi ◽  
Ajay B. Chandrashekar ◽  
Amit K. Singh ◽  
Premaradhya Nagabhushanaradhya ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Seed Yield ◽  
Lens Culinaris ◽  
Foliar Application ◽  
Winter Season ◽  
Growth Period ◽  
Growth And Yield ◽  
Flower Initiation ◽  
Foliar Nutrition ◽  
Pod Development

Lentil (Lens culinaris) is an important winter season annual legume crop known for its highly valued seed in human and animal nutrition owing to its high lysine and tryptophan content. Shortage of water during the crop growth period has become the major impediment for cultivation of pulses in rice fallow in particular. Under such conditions, the application of hydrogel can be a potential alternative to improve photosynthetic efficiency, assimilate partitioning, and increase growth and yield. A field experiment was conducted from November to February during 2015–16 to 2017–18 on clay loam soil that was medium in fertility and acidic in reaction (pH 5.4) at Central Agricultural University, Imphal, Manipur. The experiment was laid out in split plot design with three replications. There were three hydrogel levels in total in the main plot and foliar nutrition with five different nutrient sprays in sub-plots, together comprising 15 treatment combinations. The data pooled over three years, 2015–2018, revealed that application of hydrogel at 5 kg/ha before sowing recorded a significantly greater number of pods per plant (38.0) and seed yield (1032.1 kg/ha) over the control. Foliar application of nutrients over flower initiation and pod development had a positive effect on increasing the number of pods per plant eventually enhanced the seed yield of lentil. Foliar application of either 0.5% NPK or salicylic acid 75 ppm spray at flower initiation and pod development stages recorded significantly more pods per plant over other nutrient treatments. Further, the yield attributed improved because of elevated growth in plant. Significantly maximum seed yield (956 kg/ha) recorded in the NPK spray of 0.5% remained on par with salicylic acid 75 ppm (939 kg/ha) over the rest of the treatments.

scholarly journals GENETIC VARIATION AND SELECTION CRITERIA FOR SEED YIELD RELATED TRAITS IN RAPE SEED (Brassica napus L.)

2015 ◽  
Vol 26 (2) ◽  
pp. 15-22
Author(s):  
S. Parveen Parveen ◽  
M. H. Rashid Rashid ◽  
M. S. R. Bhuiyan
Keyword(s):  
Coefficient Of Variation ◽  
Seed Weight ◽  
Positive Association ◽  
Negative Association ◽  
Genetic Advance ◽  
Rape Seed ◽  
Significant Positive Association ◽  
Days To Maturity ◽  
Additive Gene ◽  
High Heritability

The field experiment was conducted to estimate the genetic variability and correlation between yield contributing traits using 15 rape seed genotypes. The results indicated that the phenotypic variance for all the characters was considerably higher than the genotypic variance denoting little influence of environmental factors on their expression. Characters like 1000-seed weight (12.39, 14.10), days to 50% flowering (18.36, 18.77) and days to maturity (4.63, 5.06) showed low genotypic and phenotypic coefficient of variation. Moderate genotypic and phenotypic coefficient of variation was observed in number of primary branches per plant (20.22, 22.16), length of siliqua (20.84, 20.97), number of seeds per siliqua (30.90, 33.06), number of siliquae per plant (49.34, 49.81) and yield per plant (34.36, 39.98) and high genotypic (67.00) and phenotypic coefficient of variation (68.57) was observed for number of secondary branches per plant. Plant height (85.98%, 30.89), 1000 seed weight (77.14%, 22.41), days to 50% flowering (95.66%, 20.35) and days to maturity (83.85%, 7.82) showed high heritability with low genetic advance which indicated the possibility of non-additive gene action. Number of primary branches per plant (83.22%, 37.99, 636.02), length of siliqua (98.83%, 42.68, 1084.42), number of seeds per siliqua (87.40%, 59.52, 424.22), number of siliqua per plant (98.15%, 100.71, 178.83) and yield per plant (73.87%, 60.84, 4539.97) showed high heritability with high genetic advance and high genetic advance in percentage of mean revealed the possibility of predominance of additive gene effects. Number of primary branches per plant had showed highly significant positive association with number of secondary branches per plant (rg=0.597, rp= 0.537) and yield per plant (rg=0.43). Days to 50% flowering showed significant positive association with seeds per siliqua (rg=0.492; rp=0.436), 1000 seed weight (rg=0.486; rp=0.472) and yield per plant (rg=0.438; rp=0.379). Length of siliqua manifested highly significant positive association with siliqua per plant (rg=0.571; rp=0.514) and significant negative association with yield per plant (-0.471) at genotypic level. Siliqua per plant had highly significant negative association at both genotypic and phenotypic level with yield per plant (-0.697; -0.525) but 1000 seed weight had highly significant positive association with yield per plant both genotypic and phenotypic level (0.893; 0.814). The results of the path analysis revealed that 1000 seed weight (0.766) had the maximum direct effect and the maximum negative direct effect was observed in seeds per siliqua (0.305). In summary, the results suggested that there were some yield related traits such as 1000 seed weight and days to 50% flowering could be selected and used in breeding program for increasing the grain yield of rapeseed.

scholarly journals Variability, Heritability, Genetic Advance and Interrelationships for Agronomic and Yield Traits of Sorghum B-Lines under Different Environments

2018 ◽  
pp. 1-13
Author(s):  
A. M. M. Al-Naggar ◽  
R. M. Abd El-Salam ◽  
M. R. A. Hovny ◽  
Walaa Y. S. Yaseen
Keyword(s):  
Grain Yield ◽  
Coefficient Of Variation ◽  
Block Design ◽  
Selection Criterion ◽  
Genetic Advance ◽  
Planting Dates ◽  
High Heritability ◽  
Selection For ◽  
Strength Of Association ◽  
B Lines

Information on heritability and trait association in crops assist breeders to allocate resources necessary to effectively select for desired traits and to achieve maximum genetic gain with little time and resources. The objectives of this investigation were to determine the amount of genetic variability, heritability, genetic advance and strength of association of yield related traits among sorghum lines under different environments in Egypt. Six environments with 25 sorghum B-lines were at two locations in Egypt (Giza and Shandaweel) in two years and two planting dates in one location (Giza). A randomized complete block design was used in each environment with three replications. Significant variation was observed among sorghum lines for all studied traits in all environments. Across environments, grain yield/plant (GYPP) showed positive and significant correlations with number of grains/plant (r = 0.71), days to flowering (r = 0.47), 1000-grain weight (r = 0.16) and plant height (PH) (r = 0.19). In general, the estimates of phenotypic coefficient of variation (PCV) were higher than genotypic coefficient of variation (GCV). Combined across the six environments, the highest PCV and GCV was shown by PH trait (95.14 and 43.57%) followed by GYPP (36.42 and 30.78%), respectively, indicating that selection for high values of these traits of sorghum would be effective. GYPP and PH traits showed high heritability associated with high genetic advance from selection, indicating that there are good opportunities to get success in improvement of these traits via selection procedures. Results concluded that PH is good selection criterion for GYPP and therefore selection for tall sorghum plants would increase grain yield.

scholarly journals Morphological Characterization of Mulberry (Morus spp.) Accessions Grown in Kenya

2013 ◽  
Vol 3 (1) ◽  
pp. 10 ◽  
Author(s):  
Nderitu Wangari Peris ◽  
Kinyua Mirriam Gacheri ◽  
Mutui Mwendwa Theophillus ◽  
Ngode Lucas
Keyword(s):  
Hierarchical Cluster ◽  
Morphological Characterization ◽  
Phenotypic Traits ◽  
Mulberry Leaf ◽  
Leaf Yield ◽  
Morus Spp ◽  
Positive Correlations ◽  
Internode Distance ◽  
Number Of Branches

<p>Genetic divergence of five mulberry accessions including Embu, Thika, Thailand (<em>M. alba</em>), Kanva-2 and S41 (<em>M. indica</em>) grown in Kenya were examined using twelve phenotypic traits. The assessment of phenotypic traits was done in a field study in two localities, Nairobi and Eldoret. The traits that were significantly different across the mulberry accessions included lamina width and petiole length (P ? 0.01), petiole width and growth height (P ? 0.05), internodes distance and number of branches (P ? 0.001). The Duncan’s Multiple Range Test (DMRT) results were used to generate a dendrogram derived from hierarchical cluster analysis that further partitioned the mulberry accessions into four groups. Embu and Thailand accessions grouped together while S41, Thika and Kanva-2 accessions grouped separately. Embu and Thailand accessions were characterized by fewer numbers of branches than the rest of the accessions. Thika accession had high number of branches and short internode distance. Significant and positive correlations were found between leaf yield traits except in internode distance and number of branches which were significant and negatively correlated. Significant and positive correlations can be utilized since they are rewarding for mulberry leaf yield improvement.</p>

scholarly journals Sources and Uses of Fuel for Fish Smoking Around the Lake Chad in Borno State, Nigeria

2015 ◽  
Vol 6 (2) ◽  
pp. 78 ◽  
Author(s):  
Yerima I. ◽  
Y. M. Ngulde
Keyword(s):  
Moisture Content ◽  
Analysis Of Variance ◽  
Large Volume ◽  
Coefficient Of Variation ◽  
Rice Hull ◽  
Fishing Community ◽  
Acacia Senegal ◽  
Lake Chad ◽  
Energy Value ◽  
Surface Moisture

<p>Fuel around the rural fishing community of the Lake Chad in Borno state is scarce and expensive. Where it is available it is at a distance of 120km therefore alternative and strategy must be developed to provide fuel to the fishing community to preserve the large volume of fish landed around the Lake Chad. A visit was made to the lake shores to identify the various types of materials in use by the processors as fuel and analysis of the fuel types were made, especially moisture content being the most important factor in determining the energy value of a fuel.  The fuel types were compared to the type and quantity of fish landed daily. The analysis of variance between paired fuel types was found to be significant at 1% with low coefficient of variation. In this study Eucalyptus camaldulenis and Acacia senegal were found to have the least moisture content and available to processors. Rice hull which has a 0.001% surface moisture content was not known to the processors as biofuel. Which we hope to introduced at the end of the research. The use of cowdung was always minimized due to its social ills. </p>

MEASUREMENT OF RADON SOIL GAS IN AND AROUND BHARATHINAGARA, MANDYA DISTRICT

2019 ◽  
Vol 187 (1) ◽  
pp. 83-87
Author(s):  
T S Shashikumar ◽  
S Revanna ◽  
M N Ramachandra ◽  
G V Ashok ◽  
C Ningappa ◽  
...  
Keyword(s):  
Solid State ◽  
Moisture Content ◽  
Activity Concentration ◽  
Geometric Mean ◽  
Winter Season ◽  
Mean Value ◽  
Summer Season ◽  
Soil Gas ◽  
Activity Concentrations ◽  
The World

Abstract Radon activity concentration in soil gas has been studied in and around Bharathinagara, Mandya district (12° 13|| N and 77° 20|| E) using Solid State Nuclear Track Detectors with Twin cup dosimeter. The activity concentration of 222Rn in soil gas was studied at two depths. Radon in soil gas was found to increase with depth and decrease with increase in moisture content of the soil. Radon in soil gas was found to be higher in winter season which varies from 0.22 ± 0.01 to 1.31 ± 0.01 kBq/m3 with a Geometric mean value of 0.56 ± 0.01 kBq/m3 in 1 m depth and lower radon soil gas was found to be 0.16 ± 0.01 to 0.60 ± 0.01 kBq/m3 with a Geometric mean value of 0.30 ± 0.01 kBq/m3 in 0.5 m depth during summer season. The activity concentrations of radon soil gas from in and around Bharathinagara are lower compared to those in other parts of the world.

scholarly journals Algal flora of Rajarani Lake, Dhankuta and their seasonal distribution

Our Nature ◽  
2017 ◽  
Vol 15 (1-2) ◽  
pp. 44-54
Author(s):  
Govinda Shrestha ◽  
Shiva Kumar Rai
Keyword(s):  
Seasonal Variation ◽  
Rainy Season ◽  
Physicochemical Parameters ◽  
Winter Season ◽  
Single Species ◽  
Seasonal Distribution ◽  
Algal Flora ◽  
Ankistrodesmus Falcatus ◽  
Different Seasons ◽  
Aulacoseira Granulata

In this paper, a total 46 algae belonging to 34 genera and 3 classes (Chlorophyceae 54%, Bacillariophyceae 28%, Cyanophyceae 18%) have been reported from Rajarani Lake, Dhankuta, Nepal. Among these, 13 algae were reported as new to the country. Genera Ankistrodesmus, Closterium, and Desmodesmus had maximum number of species whereas 25 genera were represented by single species. Seasonal variation of algae showed that there was changing number and type of algae with physicochemical parameters in different seasons. Cyanophycean algae Microcystis flos-aque was dominant and observed in all sites in every collection of winter, summer and rainy seasons, and followed by bacillariophyceaean algae i.e., Aulacoseira granulata var. angustissima. The maximum number of algae was found in summer (59%) followed by winter (50%) and rainy (31%) seasons. There were 6 common algae found in all season’s viz. Ankistrodesmus falcatus, Aulacoseira granulata var. angustissima, Flagilaria tenera, Microcystis flos-aquae, Navicula radiosa and Oedogonium sp. Algae viz., Anabaena affinis, Cyclotella meneghiana, Pinnularia divergens, Pinnularia interrupta, Tetrastrum heteracanthum, and Ulothrix subtilissima were found only in winter season whereas, Aulacoseirsa granulata var. muzzanensis, Bolbochaete sp, Closterium striolatum, Cylindrospermum muscicola, Desmodesmus abundans, Desmodesmous quadricauda var.bicaudatus, Eunotia bilunaris, Gomphonema lacusrankaloides and Gomphonema pseudoaugur were observed only in summer. Similarly, Aphanocapsa pulchra, Oscillatoria sancta and Pediastrum duplex var. gracillimum were reported only in rainy season.

scholarly journals Genetic Variability, Character Association and Path Analysis in Boro Rice (Oryza sativa L.) Germplasm from Bangladesh

2019 ◽  
Vol 22 (1) ◽  
pp. 35-43
Author(s):  
MZ Islam ◽  
T Chakrabarty ◽  
N Akter ◽  
ESMH Rashid ◽  
M Khalequzzaman ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Coefficient Of Variation ◽  
Oryza Sativa L ◽  
Block Design ◽  
Crop Improvement ◽  
Leaf Length ◽  
Component Traits ◽  
High Heritability ◽  
Positive Significant Correlation ◽  
Boro Rice

The success of varietal development programmme largely depends on the nature and magnitude of genetic variability, heritability and characters association of the crop. The objective of the present study was to estimate the extent of genetic variability and relation between yield and related characters of rice. Forty Boro rice germplasm were evaluated in a randomised complete block design with three replications. Analysis of variance indicated significant differences among the genotypes for 14 quantitative characters. The presence of slightly higher phenotypic coefficient of variation than genotypic coefficient of variation indicated the negligible influence of environment on the expression of yield and its component traits. Leaf length, days to flowering, days to maturity and 1000 grain weight showed highly positive significant correlation present with yield hill-1. High heritability had been observed for yield contributing traits during the study, suggested that these traits would respond to selection owing to their high genetic variability and transmissibility. Therefore, a thorough understanding of the inheritance of traits, their heritability and relationship with other important characteristics is important for the choice of breeding and selection methods for crop improvement. Bangladesh Rice j. 2018, 22(1): 35-43

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