scholarly journals Diallel analysis for seed yield and its component traits in Cuphea procumbens

Genetika ◽  
2006 ◽  
Vol 38 (1) ◽  
pp. 9-22 ◽  
Author(s):  
S.P. Singh ◽  
Meenakshi Singh ◽  
H.K. Yadav
Keyword(s):  
Seed Yield ◽  
Quantitative Traits ◽  
Gene Action ◽  
Regression Line ◽  
Diallel Analysis ◽  
Breeding Value ◽  
Major Influence ◽  
Plant Seeds ◽  
Component Traits ◽  
Half Diallel

The Cuphea procumbens Orteg. is an important annual plant source of medium chain fatty acids. The present study was conducted to estimate different gene systems involved in the inheritance of important quantitative traits viz. plant height, branches/plant, fruits/plant, seeds/fruit and seed yield/plant in F1 and F2 generations following 6 parents half diallel. Diallel assumptions were fulfilled for all the characters. Wr - Vr graph and component analysis revealed the major influence of over dominance for all the traits except branches/plant in F1. The arrays scattered all along the regression line below limiting parabola in two groups, Dominance and recessive and was confirmed by standardized deviation graph. The ranking on the basis of breeding value (Yr) of the parents and per se performance was closely associated (r=0.83**). On the basis of ranking, parents 'NBC-01', 'NBC-25' and 'NBC-30' were found most promising and possessed more dominant alleles for most of the characters. Considering the gene action involved, the breeding plan was discussed.

Varietal cross diallel analysis for seed yield and its components in fennel ( Foeniculum vulgare mill)

2009 ◽  
Vol 57 (3) ◽  
pp. 383-387
Author(s):  
A. Dashora ◽  
R. Sharma ◽  
E. Sastry ◽  
D. Singh
Keyword(s):  
Analysis Of Variance ◽  
Seed Yield ◽  
Recurrent Selection ◽  
Diallel Analysis ◽  
Test Weight ◽  
Complex Type ◽  
Foeniculum Vulgare ◽  
Yielding Ability ◽  
Component Traits ◽  
Half Diallel

A half diallel of nine genetically diverse varieties was made and the resulting 36 F 1 populations were evaluated along with the parents. The analysis of variance indicated that heterosis was significant for all the characters, except test weight. The heterosis components were also significant for most of the traits studied. The specific heterosis component accounted for more than 80% of the overall heterosis, indicating a complex type of inheritance for seed yield and its component traits. The crosses JF 29 × Local, RF 125 × JF 29 and UF (M)-1 × RF 101 exhibited significant positive heterobeltiosis for seed yield per plant. The parents RF125 and JF 29 merit attention as parents in the development of hybrids. The use of recurrent selection and the development of composites are suggested as ways to improve yielding ability in fennel.

Study onGenetic Variability, Heritability and Genetic Advance for Seed Yield and Component Traits in Rice

2017 ◽  
Vol 4 (03) ◽  
Author(s):  
PUNIT KUMAR ◽  
VICHITRA KUMAR ARYA ◽  
PRADEEP KUMAR ◽  
LOKENDRA KUMAR ◽  
JOGENDRA SINGH
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Seed Yield ◽  
Flag Leaf ◽  
Grain Weight ◽  
Major Influence ◽  
Genetic Advance ◽  
Component Traits ◽  
Biological Yield ◽  
1000 Grain Weight

A study on genetic variability, heritability and genetic advance for seed yield and component traits was made in 40 genotypes of riceduring kharif 2011-2012 at SHIATS, Allahabad. The analysis of variance showed highly significant differences among the treatments for all the 13 traits under study.The genotypes namely CN 1446-5-8-17-1-MLD4 and CR 2706 recorded highest mean performance for panicles per hill and grain yield. The highest genotypic and phenotypic variances (VG and VP) were recorded for spikelets per panicle (3595.78 and 3642.41) followed by biological yield (355.72 and 360.62) and plant height (231.48 and 234.35).High heritability (broad sense) coupled with high genetic advance was observed for plant height, flag leaf length, panicles per hill, tillers per hill, days to maturity, spikelet’s per panicle, biological yield, harvest index, 1000 grain weight and grain yield, indicating that selection will be effective based on these traits because they were under the influence of additive and additive x additive type of gene action. Highest coefficient of variation (PCV and GCV) was recorded for tillers per hill (18.42% and 17.23%), panicle per hill (19.76 % and 18.68%), spikelet’s per panicle (34.30 and34.07 %), biological yield (28.31 % and 28.12 %), 1000 grain weight (15.57 % and 15 31 %) and grain yield (46.66% and 23.54 %), indicating that these traits are under the major influence of genetic control, therefore the above mentioned traits contributed maximum to higher grain yield compared to other traits, indicating grain yield improvement through the associated traits.

Combining Ability and Gene Action Analysis for Seed Yield and Component Traits in F2 Generation of Vigna mungo L. Hepper by using Griffing Approach

2020 ◽  
Author(s):  
Amandeep Singh ◽  
R. K. Mittal ◽  
V. K. Sood ◽  
Kulveer Singh Dhillon ◽  
Shailja Sharma
Keyword(s):  
Seed Yield ◽  
Combining Ability ◽  
Gene Action ◽  
Block Design ◽  
Crop Improvement ◽  
Gene Effects ◽  
Early Maturity ◽  
Plant Seed ◽  
Combining Abilities ◽  
Half Diallel

Background: Urdbean (2n=2x=22), also known as blackgram is an important short duration legume crop belonging to family Fabaceae, widely cultivated in Asia. Urdbean occupies an important position among pulses owing to its high seed protein (25-26%), carbohydrates (60%), fat (15%), minerals, amino acids and vitamins. Owing to its low water requirement, it is also suitable for rainfed conditions. It adapts well to various cropping systems owing to its ability to fix atmospheric nitrogen in symbiosis with soil bacteria, rapid growth and early maturity. Half diallel analysis was adopted in present study to gather information on gca (general combining abilities) and sca (specific combining abilities) of 6 diverse parents and simultaneously estimating various types of gene effects involved in the expression of seed yield and related attributes in urdbean. Methods: The F1’s were developed during 2017 in 9 x 9 half diallel fashion by Sharma et al. 2019 and these F1’s were evaluated. Significant crosses on the basis of gene action and combining ability were selected for further advancement. The experimental material comprised of the six parents and 15 F2’s of a 6 x 6 half diallel cross among six cultivars of urdbean (four are purelines viz., Palampur-93, HPBU-111, DU-1 and KU-553 and rest of the two are advanced and indigenous lines viz., Him Mash-1 and IC-281994). The F2’s along with the parental genotypes were grown in a Randomized block Design (RBD) with three replications at Experimental Farm of the Department of Crop Improvement, COA, CSK HPKV Palampur (H.P.) during Kharif, 2018. Results: The cross combination, Him Mash-1× HPBU-111, was identified the best for high seed yield on the basis of sca. The specific crosses, Palampur-93 × IC-281994, Palampur-93 × KU-553 were good specific combiners for most of the traits viz., plant height, branches per plant, pods per plant, biological yield per plant, seed yield per plant, harvest index, 100-seed weight and crude protein content.

scholarly journals Studies on Genetic Diversity in Desi Chickpea (Cicer arietinum L.) using D2 Statistics

2021 ◽  
pp. 100-104
Author(s):  
Jakkam Mahipal Reddy ◽  
Gabrial M. Lal ◽  
Velugoti Priyanka Reddy ◽  
Subhadra Pattanayak ◽  
V. Rohith Guptha ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Cicer Arietinum ◽  
Seed Yield ◽  
Quantitative Traits ◽  
Direct Selection ◽  
Plant Seed ◽  
Cicer Arietinum L ◽  
Wide Range ◽  
Component Traits ◽  
Superior Genotypes

A trail was conducted during rabi 2020 to study genetic diversity among 36 favorable genotypes of chickpea (Cicer arietinum L.) with help of Mahalanobis D2 statistics. On the basis of D2 values, 36 genotypes were arranged into 5 clusters. The intra cluster distances were lower than inter-cluster distances, specifying that genotypes comprised within a cluster shows tendency to vary less apart from each other. Out of thirteen characteristics considered, secondary branches per plant, number of pods per plant, seed yield per plant, harvest index and plant height, contributed very much in relation to genetic divergence. Wide range of variability was noticed for quantitative traits. This suggested that the selection based on these characteristics would be valuable in improving the grain yield. Therefore, a direct selection based on seed yield and component traits may be practiced to choose superior genotypes which could be utilized in breeding program for the development of high yielding chickpea genotypes.

scholarly journals DIALLEL ANALYSIS OF ROUGH BLOSSOM-END SCARRING IN TOMATO

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1172e-1172
Author(s):  
J. H. M. Barten ◽  
J. W. Scott ◽  
J. Elkind ◽  
N. Kedar
Keyword(s):  
Gene Action ◽  
Dominant Gene ◽  
Fruit Size ◽  
Diallel Analysis ◽  
Genetic System ◽  
Narrow Sense Heritability ◽  
Gene Effects ◽  
Breeding Programs ◽  
Additive Gene ◽  
Half Diallel

A half diallel including 11 parents was conducted under high temp. conditions in Florida and low temp. conditions in Israel. Blossom scar (BS) size was measured relative to the fruit size for 20 mature fruits per plot. Griffing's analysis showed that both GCA and SCA effects were highly significant at both locations (p< 0.0001). Analysis according to Hayman indicated no epistatic effects. In both environments, additive and dominant gene action was significant (p < 0.0005), although the additive gene effects were most important. Averaged over all loci, the incomplete dominance was in the direction of small BS. Narrow sense heritability estimates were 0.62 and 0.57 for Florida and Israel, respectively. Combined analysis showed that the genetic system was unstable over the 2 environments, as both additive and dominant gene effects interacted significantly with environment (p < 0.0001). The implication for breeding programs is that hybrid performance should be tested at several locations to insure stability of small BS.

scholarly journals GENE ACTION AND COMBINING ABILITY STUDY IN SESAME

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Mandakini Kabi ◽  
Bhabendra Baisakh ◽  
Manasi Dash ◽  
Swapan K Tripathy ◽  
S. Sahu ◽  
...  
Keyword(s):  
Seed Yield ◽  
Combining Ability ◽  
Seed Weight ◽  
Recurrent Selection ◽  
Gene Action ◽  
Reciprocal Recurrent Selection ◽  
Additive Variance ◽  
Plant Seeds ◽  
Additive Gene ◽  
100 Seed Weight

The study of gene action and combining ability have been conducted in 28 F1 cross combinations along with eight parents in 8x8 half-diallel scheme following Griffing’s Approach for 14 morphoeconomic traits including seed yield and oil content in sesame. The general combining ability (GCA) and specific combining ability (SCA) component of variation were significant for parents and crosses respectively for all characters except internode length for GCA indicating role of both additive and nonadditive gene action. However, higher proportion of SCA variance (?2 sca) than GCA variance (?2 gca) revealed preponderance of non-additive gene action for all characters except capsule length and capsule width under study. Further, variance due to dominance played a significant role than additive variance in all traits except capsule width and 100-seed weight. Nirmala is considered as the best general combiner owing to its higher estimate of gca effects for yield per plant, for days to maturity, plant height, branches per plant, capsules per plant, seeds per capsule, capsule length and 100-seed weight. Among cross combinations; Rama × GT-10, AT-382 × Krishna, AT-382 × Nirmala, Krishna × Nirmala, Krishna × Uma, Nirmala × Prachi and Prachi × Uma showed significantly higher sca effect for seed yield per plant in the desired direction indicating their merit for recovery of transgressive segregants for higher productivity following reciprocal recurrent selection.

scholarly journals DETERMINATION HETEROSIS,COMBINING ABILITY AND GENE ACTION USING HALF DIALLEL CROSSES IN MAIZE.

2018 ◽  
Vol 49 (6) ◽  
Author(s):  
Hammadi & abed
Keyword(s):  
Combining Ability ◽  
Gene Action ◽  
Diallel Analysis ◽  
Kernel Weight ◽  
Specific Combining Ability ◽  
Analysis Method ◽  
Degree Of Dominance ◽  
Additive Gene ◽  
Hybrid Art ◽  
Half Diallel

Six inbred lines of maize were crossed in this study by using half – diallel analysis method , during spring season of 2017, to produce fifteen F1 crosses. The parents and crosses were cultivated during fall season of 2017 by using R.C.B.D with three replications to determine heterosis, general and specific combining ability effects and gene action . Significant differences were found among parental and their crosses for all the traits . The results were showed that the hybrid ( Zm - 1× Zm - 5) had the highest heterosis in grain yield.plant-1 (113.4%). The hybrid (ART-B-17x SYN-33) produced highest number rows. ear-1 (17.9) rows, 500 kernel weight (112.9) gm and grain yield.plant-1 (214.7) gm . The values  of  specific combining ability variances were more than the general combining ability variances for all the traits, indicating that non-additive gene action was responsible for inheritance of all the traits. The values of the broad sense heritability for all characters were higher and  average degree of dominance was exceeded one for all the traits . Results indicated that some inbreds could be used in breeding  program to develop single crosses which have  higher grain yield because all the traits  under over dominance gene action

scholarly journals Combining ability × environment interaction and genetic analysis for agronomic traits in safflower (Carthamus tinctorius L.): biplot as a tool for diallel data

2017 ◽  
Vol 109 (2) ◽  
pp. 229 ◽  
Author(s):  
Pooran Golkar ◽  
Ehsan Shahbazi ◽  
Mojtaba Nouraein
Keyword(s):  
Seed Yield ◽  
Combining Ability ◽  
Gene Action ◽  
Agronomic Traits ◽  
Carthamus Tinctorius ◽  
Environment Interaction ◽  
Geographical Regions ◽  
Selection For ◽  
Half Diallel ◽  
High Seed Yield

Combining ability × environment interaction is considerable to identify the effect of environment on the combining ability and gene action of the traits to select appropriate parents for safflower hybrid production. The 36 genotype (28 F<sub>2</sub> progenies of eight-parent half-diallel crosses across 8 parental genotypes) of safflower were studied to investigate the mentioned parameters across different geographical regions of Iran. The results indicated significant differences among parents for general and specific combining ability, except for seeds per capitulum across three environments. The overall results indicated that K<sub>21</sub> and Mex.22-191 were excellent parents with greater general combining ability for the improvement of seed yield in safflower. The K<sub>21</sub> × Mex.22-191 hybrid could be, therefore, employed for the production of high seed yield in safflower breeding. The estimates of genetic variance components recommended the importance of additive- dominance genetic effects that contributed to variation in yield per plant. Such gene action expression for seed yield <a href="https://www.google.com/search?espv=2&amp;biw=1024&amp;bih=667&amp;q=define+appetite&amp;sa=X&amp;ved=0ahUKEwiT-vT4n6TMAhXoIpoKHRKqAWQQ_SoIOTAA">needs</a> auxiliary methods based on hybridization and selection for seed yield advancement in safflower.

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