scholarly journals Characterization of Identified Distinct Tamarind (Tamarindus indica L.) Genotypes for Yield-related Morphological Traits in Karnataka

2021 ◽  
pp. 14-23
Author(s):  
M. N. Mamathashree ◽  
B. G. Prakash ◽  
B. Fakrudin ◽  
U. Jayashree ◽  
M. K. Honnabyraiah ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Seed Weight ◽  
Morphological Traits ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Genetic Advance ◽  
Monotypic Genus ◽  
Tamarindus Indica ◽  
High Heritability

A monotypic genus crop tamarind is one of the important grown in India. The multipurpose tree comprises multiuse in cuisine preparation to medicine. All the parts of the tree have been used in many industries. The present study was conducted to assess the quantum of diversity in seventeen morphological traits of identified distinct 96 tamarind genotypes collected from 30 districts of Karnataka during 2018-19 at College of Horticulture, Bengaluru. The morphological traits including fruit yield/plant were observed. Among major yield attributing morphological traits viz., fruit weight ranged from 4.27-32.45 g, pulp weight ranged from 2.10-15.00 g and fruit yield/plant ranged from 49.50 to 298.50 kg. The genetic variation components viz., PCV ranged from 13.93 to 48.25 while GCV ranged from 12.22 to 47.28. The high heritability coupled with high genetic advance as per cent over mean was observed in the traits such as fruit weight (96%, 91.20%) and seed weight (96%, 95.45%) while moderate heritability and genetic advance as per cent over mean was revealed in fruit yield/plant (78.00 %, 55.83 %). Present study brought out and identified three top best performing tamarind genotypes TAM_KOL4, TAM_BEN(U)3 and TAM_BEN(U)4 expressed higher yield over the check GKVK17 recorded third highest fruit yield/plant but however it was not significant. The selection based on yield related traits and best performing genotypes in terms of fruit yield/plant could be effectively used in tamarind breeding programme.

scholarly journals Genetic diversity, heritability and genetic advance of Solanum melongena L. from three secondary centers of diversity

2021 ◽  
Vol 28 (1) ◽  
pp. 155-169
Author(s):  
Debi Rani Datta ◽  
MY Rafii ◽  
Azizah Misran ◽  
Mashitah Jusoh ◽  
Oladosu Yusuff ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Morphological Traits ◽  
Environmental Influence ◽  
Block Design ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Width Ratio ◽  
Genetic Advance ◽  
Fruit Length ◽  
High Heritability

Indo-Birmanian is considered as the domesticated region and primary center of eggplant diversity from where it spread to other secondary centers of diversity. In this study, the genetic diversity among 56 eggplant genotypes from three secondary centers of diversity (Bangladesh, Malaysia and Thailand) was assessed using 11 morphological traits. The experiment was laid in a complete randomized block design with three replications. A wide significant variation was observed for all the morphological traits, and highly significant differences among the three centers of diversity. High heritability and genetic advance was found for different traits i.e. fruit length, fruit diameter, fruit girth, fruit length to width ratio, average fruit weight, number of fruits per plant, fruit yield per plant, plant height and number of primary branches per plant. The selected best traits i.e. number of fruits per plant, average fruit weight and fruit yield per plant showed high heritability along with high genetic advance and less environmental influence but the high value of PCV and GCV. So these traits could be useful for selection criteria in the future breeding program. These results are relevant for evolutionary studies, breeding programs, and management of eggplant genetic resources. Bangladesh J. Plant Taxon. 28(1): 155-169, 2021 (June)

scholarly journals Genetic evaluation and characterization of jute (Corchorus spp. L) genotypes using DUS

2014 ◽  
Vol 10 (2) ◽  
pp. 147-153 ◽  
Author(s):  
A Das ◽  
D Kumar
Keyword(s):  
Plant Height ◽  
Seed Weight ◽  
Quantitative Traits ◽  
Genetic Advance ◽  
High Heritability ◽  
Qualitative Characters ◽  
Fibre Fineness ◽  
Almost All ◽  
Varietal Characterization

In this study 32 jute (Corchorus spp.) varieties comprised of 18 olitorius and 14 capsularis were evaluated and characterized for five quantitative and 12 qualitative characters as per revised official DUS Test Guidelines of Jute. The experimental materials were grown in a RBD with three replications at Baarrackpore, India during 2009-10. Significant differences among genotypes noted almost for almost all the quantitative traits. PCV and GCV were highest for 1000 seed weight (33.78 and 33.29%) followed by fibre fineness (27.11 and 26.70%). Low variability was recorded in case of plant height. All the five characters exhibited more or less high heritability coupled with high genetic advance as per cent over mean. Out of 12 qualitative characters studied, in C. capsularis 8 traits were monomorphic, 4 traits were dimorphic. However, in C. olitorius no trait was monomorphic, 6 traits were dimorphic and 6 traits were polymorphic among varieties indicating their potential for varietal characterization. DOI: http://dx.doi.org/10.3329/sja.v10i2.18335 SAARC J. Agri., 10(2): 147-153 (2012)

scholarly journals Genetic variation and trait relationship in the exotic and local eggplant germplasm

1970 ◽  
Vol 34 (1) ◽  
pp. 91-96 ◽  
Author(s):  
MS Islam ◽  
MS Uddin
Keyword(s):  
Genetic Variation ◽  
Key Words ◽  
Correlation Coefficients ◽  
Positive Association ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Genetic Advance ◽  
Coefficients Of Variation ◽  
Selection For ◽  
Local Germplasm

Sixteen genotypes of local and exotic germplasms were studied to estimate variability, hcritability, genetic advance, and correlation coefficients. High genotypic and phenotypic coefficients of variation were obtained for number of fruits/plant, individual fruit weight, and yield per plant. Heritability and genetic advance were also high for these traits indicating the possibility of selection to improve these characters. Yield of fruits showed highly significant and positive association with number of fruits per plant and individual fruit weight, which indicate the importance of these characters during selection for high yielding genotypes in eggplant. Among the genotypes, Islampuri produced the highest fruit yield (58.8 t/ha) followed by Tall begun (52.8 t/ha) and EG 120 (49.6 t/ha). Incidence of borer infestation ranged from 3.0 to 20.6 %. The lowest borer infestation was found in EG 120 (3.0%), while it was the highest in EG 192 (20.6%) Key Words: Genetic variation; trait relationship; exotic and local germplasm; eggplant. DOI: 10.3329/bjar.v34i1.5758Bangladesh J. Agril. Res. 34(1) : 91-96, March 2009

scholarly journals Study on genetic variability in some agro-morphological traits of Brassica rapa L. (Brown sarson) germplasm characterized under rainfed conditions of Kashmir, India

2017 ◽  
Vol 9 (4) ◽  
pp. 2344-2349
Author(s):  
Sheikh Mohammad Sultan
Keyword(s):  
Plant Height ◽  
Brassica Rapa ◽  
Seed Yield ◽  
Coefficient Of Variation ◽  
Seed Weight ◽  
Morphological Traits ◽  
Genetic Advance ◽  
Breeding Programmes ◽  
High Heritability ◽  
Brown Sarson

36 Brassica rapa L. (Brown sarson) genotypes were characterized during two successive seasons of 2013/14 and 2014/15 along with two national checks (Puas Kalyani and GSL-2) and one local check variety (Shalimar-1) to assess the extent of variability and amount of variation in agro-morphological traits of plant height, number of primary branches/plant, days to 50% flowering, number of seeds/siliqua, seed yield/plant and 1000-seed weight. Important traits of plant height varied from 58.35 cm - 95.36 cm, seed yield/plant from 3.840 g - 18.470 g and 1000-seed weight from 2.746 g - 4.377 g. Analysis of variance revealed significant differences at 0.05 level of probability among different genotypes for these characters during a particular year while differences were non-significant in all the traits excepting days to 50% flowering when data of the two years was compared. Highest variability, phenotypic coefficient of variation (33.89%) and genotypic coefficient of variation (30.99%) were recorded for the trait seed yield/plant. High heritability coupled with high to moderate per cent genetic advance was recorded for seed yield/plant and 1000-seed weight indicating that these traits can be improved through simple selection. Moderate heritability with low genetic advance was observed in all other traits suggesting greater influence of environment. Promising donor genotypes for all these traits have been identified for possible utilization in breeding programmes in the region.

Estimates of genetic variability, heritability and genetic advance for yield and yield component traits in ash gourd [Benincasa hispida (Cogn.)] genotypes

2017 ◽  
Vol 37 (04) ◽  
Author(s):  
Lovely B. ◽  
Vijayaraghava Kumar
Keyword(s):  
Genetic Variability ◽  
Gene Action ◽  
Fruit Weight ◽  
Yield Component ◽  
Fruit Yield ◽  
Dry Matter Content ◽  
Genetic Advance ◽  
Fruit Length ◽  
High Heritability ◽  
Ash Gourd

Twenty-five diverse genotypes of ash gourd were evaluated to estimate variability, heritability and genetic advance over mean for fruit yield and yield component characters. Analysis of variance revealed significant differences for almost all the characters. High genotypic coefficient of variation was observed for fruits per plant, mean fruit weight, fruit yield per plant, fruit length, fruit girth and flesh thickness, which indicate that there exists high genetic variability and better scope for improvement of these characters through selection. The characters node to male flower, vine length, fruits per plant, mean fruit weight, fruit yield per plant, fruit length, fruit girth, flesh thickness, 100-seed weight, seeds per fruit and dry matter content had high heritability coupled with high genetic advance suggesting improvement of those characters through selection due to additive gene action. In the present study high heritability and low genetic advance was noted for days to first male and female flower indicating dominant gene action.

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 Genetic variability and trait relationship in cherry tomato (Solanum lycopersicum L. var. cerasiforme (Dunnal) A. Gray)

2013 ◽  
Vol 41 (2) ◽  
pp. 163-167 ◽  
Author(s):  
MS Islam ◽  
HC Mohanta ◽  
MR Ismail ◽  
MY Rafii ◽  
MA Malek
Keyword(s):  
Genetic Variability ◽  
Solanum Lycopersicum ◽  
Fruit Weight ◽  
Fruit Yield ◽  
High Yield ◽  
Genetic Advance ◽  
Cherry Tomato ◽  
Solanum Lycopersicum L ◽  
Wide Range ◽  
Additive Gene

Nine traits of 11 cherry tomato (Solanum lycopersicum L.) var. cerasiforme (Dunal) A. Gray) inbred lines exhibited a wide range of genetic variability. High geno- and phenotypic coefficients of variation were obtained for individual fruit weight (68.16 and 74.23%, respectively) followed by number of fruits/plant (58.8 and 68.34%, respectively). High estimates of heritability, genetic advance and genotypic coefficient of variation for the traits of individual fruit weight, number of fruits and clusters/plant were controlled by additive gene action indicating the possibility of selection to improve these characters. Fruit yield/plant showed low heritability along with low genetic advance and did not show significant and positive correlation with the remaining characters. It indicates that improvement of high yield through selection is difficult, rather hybridization can be effective for improving the fruit yield/plant. Among the lines, CH154 produced the highest number of fruits/plant (291) and highest fruit yield (1.89 kg/plant and 63.4 t/ha) and can be selected for cultivation under Bangladesh condition. DOI: http://dx.doi.org/10.3329/bjb.v41i2.13443 Bangladesh J. Bot. 41(2): 163-167, 2012 (December)

scholarly journals Heritability Analysis and Phenotypic Characterization of Spider Plant (Cleome gynandra L.) for Yield

2018 ◽  
Vol 2018 ◽  
pp. 1-11
Author(s):  
Ann Kangai Munene ◽  
Felister Nzuve ◽  
Jane Ambuko ◽  
Damaris Odeny
Keyword(s):  
Genetic Variation ◽  
Leaf Area ◽  
Chlorophyll Content ◽  
Plant Height ◽  
Single Leaf ◽  
High Heritability ◽  
Number Of Leaves ◽  
Stem Colour ◽  
Spider Plant

Knowledge on phenotypic diversity among existing spider plant accessions is a milestone in the improvement of spider plant, which is a highly nutritious indigenous vegetable in Kenya. A study involving agronomic and morphological characterization of 49 spider plant accessions assembled from East and South Africa was carried out at the University of Nairobi Field Station for two seasons in a randomized complete block design with three replications. Phenotypic data was collected on growth habit, flower, petiole, leaf and stem colour, petiole, leaf and stem hairiness, number of leaves per plant, plant height, number of primary branches, leaf length and width, single leaf area, and chlorophyll content according to FAO descriptors with modifications. Data was analyzed using both DARwin software V6 and Genstat Version 14. We observed significant differences among the traits implying great genetic variability among the evaluated spider plant accessions. The high genetic variation was further validated using the Unweighted Pair Group Method with Arithmetic mean (UPGMA) clustering method with stem and flower colour as key traits. The 49-spider plant accessions were clustered into 2 major groups, each consisting of Kenyan and South African accessions. Stepwise regression revealed that plant height had the most influence on yield in terms of number of leaves per plant. We also observed high heritability for several traits including days to flowering (91%), number of leaves per plant (99%), plant height (99%), number of primary branches (94%), chlorophyll content (94%), and single leaf area (87%). Our results reveal the high genetic variation between different spider plant accessions, especially from different regions of Africa that could be further exploited to improve productivity in the plant. The high heritability of most of the yield related traits is promising for improving yield in the crop through direct selection.

scholarly journals Heterosis and gene action in okra

2008 ◽  
Vol 32 (3) ◽  
pp. 421-432 ◽  
Author(s):  
Nandan Mehta ◽  
BS Asati ◽  
SR Mamidwar
Keyword(s):  
Plant Height ◽  
Seed Weight ◽  
Gene Action ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Additive Gene Action ◽  
Fruit Length ◽  
Additive Gene ◽  
100 Seed Weight ◽  
Number Of Seeds

Forty two hybrids generated by crossing three testers with fourteen lines were studied along with parents for studying heterosis and gene action for days to first flowering, days to 50 percent flowering, fruit weight, fruit length, plant height, number of seeds per fruit, 100-seed weight and fruit yield per plant during rainy season and summer season of 2002-03 at Department of Horticulture, Indira Gandhi Agricultural University, Raipur, Chhattisgarh, India. The most heterotic combinations were VRO-6 x Parbhani Kranti, VRO-4 x Parbhani Kranti, Daftari-1 x Arka Abhaya and Kaveri Selection x Ankur Abhaya for fruit yield per ptant. The sca variances for days to fruit flower, days to 50 percent flowering, fruit weight, fruit length, plant height, number of seeds per fruit and 100-seed weight were higher than so gca variance so there is a preponderance of non-additive gene action. The gca variances was greater than sca variances for fruit yield per plant indicating preponderance of additive gene action for this trait. Overall, the results discussed above are quite indicative of the fact that hybrid okra has great potentialities of maximizing fruit yield in Chhattisgarh plains.DOI: http://dx.doi.org/10.3329/bjar.v32i3.544Bangladesh J. Agril. Res. 32(3) : 421-432, September 2007

scholarly journals Selection Criteria for Improving Yield in Chili (Capsicum annuum)

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
S. Chakrabarty ◽  
A. K. M. Aminul Islam
Keyword(s):  
Direct Effect ◽  
Coefficient Of Variation ◽  
Seed Weight ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Edible Fruit ◽  
Fruit Maturity ◽  
Positive Direct ◽  
Dry Fruit ◽  
Weight Number

The present investigation was carried out to estimate the genetic variability and character association. Significant differences were observed among the genotypes for all the 15 traits for 20 chili genotypes. The highest genotypic coefficient of variation and phenotypic coefficient of variation were found for ten edible fruit weight, number of fruits per plant, fruit yield per plant, ten dry fruit weight, fruit length, fruit width, and weight of seeds per fruit. High heritability coupled with very high genetic advance as per cent of mean was observed for ten edible fruit weight, ten dry fruit weight, fruit length, number of fruits per plant, and fruit yield per plant. Phenotypic correlation coefficient among different traits indicated that fruit yield per plant at green stage had significant and positive association with ten edible green fruit weight, number of primary branches, harvest duration, and first fruit maturity and significant negative correlation with days to first picking. The path coefficient analysis revealed that days to first picking had the maximum positive direct effect on fruit yield per plant followed by harvest duration, ten edible fruit weight, ten dry fruit weight, hundred-seed weight, number of fruits per plant, first fruit maturity, and number of primary branches. Days to first picking had the maximum positive direct effect but significant negative effect with fruit yield per plant which indicated that the trait should be selected to expunge the undesirable indirect effect in order to make use of the direct effect. Therefore, selection should be practiced for ten edible fruit weight, ten dry fruit weight, number of fruits per plant, harvest duration, and hundred-seed weight for direct improvement of fruit yield per plant.

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