scholarly journals GGE biplot analysis of Line by tester for seed yield and its attributes in sunflower

2019 ◽  
Vol 14 (4) ◽  
pp. 374-389 ◽  
Author(s):  
M A Ahmed ◽  
Mohamed Ali Abdelsatar ◽  
M A Attia ◽  
A A Abeer
Keyword(s):  
Seed Weight ◽  
Gene Action ◽  
Agricultural Research ◽  
F1 Hybrids ◽  
Research Station ◽  
Gge Biplot ◽  
Additive Gene Action ◽  
Economic Trait ◽  
Additive Gene ◽  
Better Than

Nine genetically diverse sunflower promising lines in their economic trait were crossed using line by tester mating design in 2018 spring season, to estimate per se performance, combining ability, heterosis, gene action and heritability for earliness, yield and its attributes traits. The parents involved four sunflower CMS lines namely L1 (A3), L2 (A5), L3 (A9) and L4 (A13) (called hereafter “Lines” (as female parents) and five sunflower genotypes T1 (RF9), T2 (RF10), T3 (RF11), T4 (RF14) and T5 (RF1) as male parents (called hereafter “Tester”). In 2018 and 2019 summer season, the nine parents along with their 20 F1s seeds were evaluated at Shandaweel Agricultural Research Station, ARC, Sohag Governorate, Egypt using a randomized complete blocks design with three replications. Mean squares due to parents (P), crosses (C), CMS lines (L), RF testers (T), P vs C and L x T were significant for all studied traits. A larger magnitude of non-additive gene action than additive was revealed by greater ratios (GCA/ SCA) than unity for all studied traits (except for days to 50% flowering). A5 and A13 of CMS lines and RF11 and RF14 of RF lines proved to be the best general combiners for seed weight plant-1 and one or more of its attributes traits. Moreover, the best cross combinations A13 x RF11, A13 x RF1 and A5 x RF9 performed better than other developed hybrids in view of seed weight plant-1 and one or more of its attributes, hence these F1 hybrids could further be used on commercial exploitation.

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

MODE OF INHERITANCE AND GENE ACTION FOR YIELD AND ITS COMPONENTS IN PHASEOLUS AUREUS

1972 ◽  
Vol 14 (3) ◽  
pp. 517-525 ◽  
Author(s):  
Tejinder P. Singh ◽  
K. B. Singh
Keyword(s):  
Seed Weight ◽  
Gene Action ◽  
High Yield ◽  
Additive Gene Action ◽  
Components Of Variance ◽  
Partial Dominance ◽  
Graphic Analysis ◽  
Additive Gene ◽  
100 Seed Weight ◽  
Dominant Genes

A diallel study of yield and its components in F1, F2, F3 and backcross generations was used to estimate components of genetic variation and type of gene action. Graphical and components of variance analyses revealed the importance of non-additive gene action for yield, pods per plant and clusters per plant. Additive gene action was important for 100-seed weight. Partial dominance for yield and seed size and partial- to over-dominance for pods per plant, clusters per plant and pods per cluster was evident from the graphic analysis. Dominant genes seem to govern inheritance of high yield and fewer pods per plant. The study indicated the appropriateness of studying one additional generation, either F2 or backcross, to confirm the F1 results. Implication of this study on breeding methodology is discussed.

scholarly journals Genetic Analysis of Yield and its Attributes in Bread Wheat (Triticum Aestivum L. Em. Thell) Under Irrigated and Rainfed Conditions

2021 ◽  
Author(s):  
Divya Chaudhary ◽  
Swati ◽  
Kuldeep Nagar ◽  
Richa Dhyani
Keyword(s):  
Gene Action ◽  
Selection Process ◽  
Triticum Aestivum L ◽  
Pooled Analysis ◽  
F1 Hybrids ◽  
Plant Type ◽  
Additive Gene Action ◽  
Rainfed Condition ◽  
Rainfed Conditions ◽  
Additive Gene

Abstract Experiments were conducted to study the genetics and combining ability for yield and its attributes under Irrigated (E1) and Rainfed (E2) conditions using F1 hybrids derived from Line X Tester mating design by crossing eleven lines with three testers. Significant differences were observed among all the genotypes for all the traits in both E1 and E2 environments as well as in pooled analysis. The σ2gca/σ2sca ratio indicated predominance of non-additive gene action for all the characters in both environments. Therefore, this component of variance can be utilize in breeding programme through exploitation of heterosis and the selection process for identification of superior plant type should be postponed to further generations like F4 or F5. VL3001 and KACHU*2//WHEAR/SOKOLL was identified as good general combiner in irrigated condition (E1) and in rainfed condition (E2), respectively for maximum number of traits. Parent VL3001 was also identified as good general combiner for maximum number of traits in case of pooled analysis. Cross BECARD/KACHU × WH1080, BOW/VEE/5/ND/VG9144//KAL/BBB/YACO/4/CHIL/6/CASKOR/3/… × WH1080 and C306 × WH1142 was identified as good specific combination for maximum number of traits in irrigated condition (E1), rainfed condition (E2) and in pooled analysis, respectively.

scholarly journals VARIASI GENETIK, HERITABILITAS, TINDAK GEN DAN KEMAJUAN GENETIK KEDELAI (Glycine max Merrill) PADA ULTISOL

2017 ◽  
Vol 9 (2) ◽  
pp. 183-190 ◽  
Author(s):  
Suprapto Suprapto ◽  
Narimah Md Kairudin
Keyword(s):  
Genetic Variation ◽  
Gene Action ◽  
Block Design ◽  
Dominant Gene ◽  
F1 Hybrids ◽  
Genetic Advance ◽  
Additive Gene Action ◽  
Randomized Complete Block Design ◽  
Additive Gene ◽  
Broadsense Heritability

Information on genetic variation, heritability, gene action and genetic advance were important in the development of soybean varieties adapted on Ultisol. The objective of this experiment was to estimate genetic variation, hertability, gene action and genetic advance from the populaton used in breeding program. Six genotypes, i.e Dempo, Cikuray, Davros, Orba, Sindoro and Wilis were intercrossed using diallel Griffings’ Method 2 Model 1 (1956). These six genotypes and 15 F1  hybrids were planted on Ultisol using randomized complete block design with three replications located in Medan Baru village, Bengkulu city in 1999. The results of this experiment revealed that all traits showed low to high genetic variation, high broadsense heritability, low to high narrowsense heritability and genetic advance. Date of flowering and root length were fully controlled by additive gene action, however harvest index was fully controlled by   negative dominant gene action and epistasis. Other traits were controlled by positive and negative partially dominant, and positive overdominant  genes. 

Genetic analysis of partial rust resistance in faba beans

2001 ◽  
Vol 52 (1) ◽  
pp. 73 ◽  
Author(s):  
F. L. Stoddard ◽  
I. H. M. H. B. Herath
Keyword(s):  
Gene Action ◽  
Transgressive Segregation ◽  
F1 Hybrids ◽  
Disease Score ◽  
Rust Disease ◽  
Additive Gene Action ◽  
Resistant Cultivars ◽  
Cytoplasmic Effects ◽  
Female Line ◽  
Additive Gene

Five parent populations of faba bean, differing in reaction to rust disease, were crossed to prepare a complete diallel of F1 hybrids. Detached leaves of the parents and F1 hybrids were challenged with 3 Australian rust populations and symptom development was monitored from 11 to 16 days after inoculation, using a disease score related to the percentage of leaf area covered with pustules, and a nominal value for pustule size. Additive gene action was very important in determining the response to rust disease, with ILB 3025 and ILB 3107 having similar low disease scores, Fiord and Acc 327 having high values, and Icarus an intermediate value. Cytoplasmic effects were also critical, with ILB 3025 having the most susceptible cytoplasm and ILB 3107 the most resistant, and this was most readily detected in terms of the size of the pustule. Heterosis conferred slightly lower disease scores and dominance was significant but of lesser importance than additive gene action, particularly for disease score. Rust population host gene action interactions were significant by the end of the observation period, but were much smaller than the main effects. The hybrid ILB 3107 ILB 3025 had less disease development than either parent, indicating the potential for developing more resistant cultivars using transgressive segregation. ILB 3107 shows particular promise for use as a female line as it had both nuclear and cytoplasmic factors to contribute to the development of resistant cultivars.

Studies on genetic variability, character association and path analysis for yield and its contributing traits in chickpea [Cicer arietinum (L.)]

2017 ◽  
Author(s):  
D. K. Chopdar ◽  
Baudh Bharti ◽  
P. P. Sharma ◽  
R. B. Dubey ◽  
Brajendra Brajendra ◽  
...  
Keyword(s):  
Seed Yield ◽  
Seed Weight ◽  
Gene Action ◽  
Plant Biomass ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Additive Gene Action ◽  
Additive Gene ◽  
100 Seed Weight ◽  
Number Of Seeds

Genetic parameters, variability, heritability and genetic advance were studied among 20 genotypes of chickpea during during Rabi 2012-13. The characters, seed yield per plant and 100-seed weight had high values of GCV, heritability and GAM and were found to be under greater control of additive gene action. While the traits, primary branches per plant, number of seeds per pod and protein content with moderate to low heritability coupled with low genetic advance appear to be more affected by on non-additive gene action. Correlation and path coefficient analysis for seed yield per plant and its components indicated that out of 11 characters, seed yield per plant showed significant and positive correlation with harvest index, number of seeds per pod, primary branches per plant, number of pods per plant, biomass per plant, and 100-seed weight indicating that an intense selection for these characters will improve seed yield in chickpea. Path coefficient analysis revealed that days to maturity, primary branches per plant, biomass per plant, harvest index, protein content and number of seeds per pod were major characters influencing seed yield directly and indirectly. The results indicated that number of seeds per pod should be given greater emphasis for manipulation of seed yield in chickpea.

scholarly journals Comparative Evaluation of Tomato Hybrids and Inbred Lines for Fruit Quality Traits

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 609
Author(s):  
Ilias D. Avdikos ◽  
Rafail Tagiakas ◽  
Pavlos Tsouvaltzis ◽  
Ioannis Mylonas ◽  
Ioannis N. Xynias ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Gene Action ◽  
Block Design ◽  
Quality Characteristics ◽  
Hybrid Vigor ◽  
F1 Hybrids ◽  
Individual Plant ◽  
Additive Gene Action ◽  
Additive Gene ◽  
Tomato Cultivars

Tomato is one of the most consumed fruit vegetables globally and is a high dietary source of minerals, fiber, carotenoids, and vitamin C. The tomato is also well known for its nutraceutical chemical content which strengthens human immune systems and is protective against infectious and degenerative diseases. For this reason, there has been recent emphasis on breeding new tomato cultivars with nutraceutical value. Most of the modern tomato cultivars are F1 hybrids, and many of the characteristics associated with fruit quality have additive gene action; so, in theory, inbred vigor could reach hybrid vigor. A sum of 20 recombinant lines was released from the commercial single-cross hybrids Iron, Sahara, Formula, and Elpida, through a breeding process. Those recombinant lines were evaluated during spring–summer 2015 under organic farming conditions in a randomized complete block design (RCBD) experimental design with three replications. A sum of eleven qualitative characteristics of the fruit was recorded on an individual plant basis. Results from this study indicated that the simultaneous selection of individual tomato plants, both in terms of their high yield and desired fruit quality characteristics, can lead to highly productive recombinant lines with integrated quality characteristics. So, inbred vigor can reach and even surpass hybrid vigor. The response to selection for all characteristics evaluated shows additive gene action of all characteristics measured. These recombinant lines can fulfill this role as alternatives to hybrid cultivars and those that possess high nutritional values to function as functional-protective food.

scholarly journals Genetic control of characters associated with bean golden mosaic geminivirus resistance in Phaseolus vulgaris L.

1997 ◽  
Vol 20 (1) ◽  
pp. 51-58 ◽  
Author(s):  
Luis Alberto Pessoni ◽  
Maria José de O. Zimmermann ◽  
Josias Corrêa de Faria
Keyword(s):  
Phaseolus Vulgaris ◽  
Gene Action ◽  
Block Design ◽  
Diallel Cross ◽  
Viral Disease ◽  
F1 Hybrids ◽  
Phaseolus Vulgaris L ◽  
Additive Gene Action ◽  
Randomized Block Design ◽  
Additive Gene

Bean golden mosaic is the most important viral disease of the bean crop (Phaseolus vulgaris L.) in Latin America. The genetics of resistance to a Brazilian strain of bean golden mosaic virus (BGMV), was studied in a 4 x 4 diallel cross without reciprocals, among the parental genotypes DOR 303, EMGOPA 201 Ouro, Carnaval, and Redlands Greenleaf C. Seedlings of the four parents, six F1 hybrids, 12 backcrosses, and F2 generations for each combination were inoculated on the eighth day after sowing by exposure to a viruliferous whitefly (Bemisia tabaci Genn.) population for 24 h, in a glasshouse, prior to transplantation to field conditions. The full set of two parents, F1, F2 and respective backcrosses for each combination was considered to be a family. Data were recorded and analyzed for foliar yellowing, plant dwarfing, and pod malformation, using a randomized block design, with two replications. Weighted generation mean analysis was performed for each of the six families. An additive gene action model was significant for the three characteristics evaluated. On the other hand, non-additive gene action had greater absolute value in most cases. Resistance to foliar yellowing conferred by genes from DRO 303 was highly heritable and was expressed equally well in the different genetic backgrounds evaluated. Such resistance may be oligogenic. Broad- and narrow-sense heritabilities were relatively high for all response traits. The three traits studied were all positively correlated, indicating that they can be simultaneously selected for enhancement. The highest correlation coefficient was obtained for dwarfing x pod malformation.

Factors associated with emergence of Shrunken-2 maize in Korea

2006 ◽  
Vol 144 (1) ◽  
pp. 63-68 ◽  
Author(s):  
VICTOR O. ADETIMIRIN ◽  
SOON-KWON KIM ◽  
M. SZCZECH
Keyword(s):  
Combining Ability ◽  
Seed Weight ◽  
Recurrent Selection ◽  
Seed Quality ◽  
Gene Action ◽  
General Combining Ability ◽  
Additive Gene Action ◽  
Factors Associated ◽  
Additive Gene ◽  
Field Emergence

Seventeen supersweet Shrunken-2 (sh-2) maize lines and progenies of their crosses to two sh-2 hybrid testers were investigated for factors responsible for differences in field emergence in Korea in studies carried out in the field, greenhouse and laboratory. The lines and their testcrosses showed significant genetic variation for emergence. Two lines showed significant positive general combining ability (GCA) for emergence while two other lines had significant negative GCA effects. Because none of the specific combining ability effects was significant, emergence was primarily influenced by additive gene action, and could, therefore, be improved by recurrent selection. Seed weight was significantly (P<0·05) correlated with emergence for inbreds (r=0·63) and testcross progeny involving the tester with the lower mean seed weight (r=0·54). Two lines also showed significant positive GCA effects for seed weight. The lines with positive GCA effects for emergence were different from those with positive GCA for seed weight, indicating that factors other than seed weight influence field emergence. The severity of Fusarium infection of seeds of the lines was significantly correlated to germination (r=−0·61, P<0·05) and emergence (r=−0·67, P<0·01), suggesting that practices that prevent pathogenic field infection, such as timely harvest and treatment with fungicides, are crucial for high seed quality. The field emergence of sh-2 inbred parents did not give an indication of emergence in hybrid combinations.

scholarly journals Genetic Resistance to Scab Disease in Pecan

HortScience ◽  
1994 ◽  
Vol 29 (9) ◽  
pp. 1078-1080 ◽  
Author(s):  
Tommy E. Thompson ◽  
L.J. Grauke
Keyword(s):  
Gene Action ◽  
Agricultural Research ◽  
Genetic Resistance ◽  
Heritability Estimate ◽  
Carya Illinoinensis ◽  
Additive Gene Action ◽  
Additive Gene ◽  
Agricultural Research Service ◽  
The U.S ◽  
Research Service

Thirty-six cultivars and 948 seedlings from 15 controlled crosses in the U.S. Dept. of Agriculture-Agricultural Research Service pecan [Carya illinoinensis (Wangenh.) K. Koch] breeding program at Brownwood, Texas, were rated for susceptibility to nut scab [Cladosporium caryigenum (Ell. et Lang.) Gottwald] to determine heritability of this trait. Differences between parents and progenies, and within progenies, were highly significant. Within most families, a complete range of resistance reactions were evident, from fully susceptible to fully resistant. Heritability of resistance was determined by regressing individual progeny values on female, male, and midparent values, with the midparent heritability estimate being the highest (0.54). This moderate level of additive gene action and the identification of superior parents in this study will contribute to the efficiency of breeding resistant cultivars.

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