Analysis of heterosis and combining ability for production and egg quality traits in complete diallel cross of three chicken breeds

2016 ◽  
Vol 51 (2) ◽  
pp. 132
Author(s):  
Vijay Singh ◽  
Raj Narayan ◽  
V.K. Saxena ◽  
P.K. Tyagi ◽  
Chandrahas
Keyword(s):  
Combining Ability ◽  
Egg Quality ◽  
Diallel Cross ◽  
Quality Traits ◽  
Complete Diallel Cross ◽  
Chicken Breeds

scholarly journals Inheritance of Nitrogen Use Efficiency in Inbred Progenies of Tropical Maize Based on Multivariate Diallel Analysis

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Fernando Lisboa Guedes ◽  
Rafael Parreira Diniz ◽  
Marcio Balestre ◽  
Camila Bastos Ribeiro ◽  
Renato Barbosa Camargos ◽  
...  
Keyword(s):  
Genetic Control ◽  
Nitrogen Use Efficiency ◽  
Combining Ability ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Genetic Effects ◽  
Tropical Maize ◽  
Nitrogen Use ◽  
Complete Diallel Cross ◽  
Use Efficiency

The objective of our study was to characterize and determine the patterns of genetic control in relation to tolerance and efficiency of nitrogen use by means of a complete diallel cross involving contrasting inbred progenies of tropical maize based on a univariate approach within the perspective of a multivariate mixed model. Eleven progenies, previously classified regarding the tolerance and responsiveness to nitrogen, were crossed in a complete diallel cross. Fifty-five hybrids were obtained. The hybrids and the progenies were evaluated at two different nitrogen levels, in two locations. The grain yield was measured as well as its yield components. The heritability values between the higher and lower nitrogen input environment did not differ among themselves. It was observed that the general combining ability values were similar for both approaches univariate and multivariate, when it was analyzed within each location and nitrogen level. The estimate of variance of the specific combining ability was higher than general combining ability estimate and the ratio between them was 0.54. The univariate and multivariate approaches are equivalent in experiments with good precision and high heritability. The nonadditive genetic effects exhibit greater quantities than the additive genetic effects for the genetic control of nitrogen use efficiency.

A STUDY OF COMBINING ABILITY FOR GRAIN PROTEIN PERCENTAGE IN A DIALLEL CROSS OF FIVE SIX-ROW BARLEY CULTIVARS

1974 ◽  
Vol 54 (4) ◽  
pp. 605-609 ◽  
Author(s):  
K. G. BRIGGS
Keyword(s):  
Combining Ability ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Grain Protein ◽  
Hordeum Vulgare L ◽  
Protein Percentage ◽  
Barley Cultivars ◽  
Combining Ability Analysis ◽  
Lower Protein ◽  
Complete Diallel Cross

Grain protein percentage was assessed in F1 and F2 populations in two experiments involving a complete diallel cross among the barley (Hordeum vulgare L.) cultivars Bonanza, Conquest, Olli, Galt and Jubilee. Heterosis was absent in all crosses and a Griffing combining ability analysis showed that specific combining ability was nonsignificant in both F1 and F2 populations. General combining ability (GCA) for protein percentage was highly significant in both generations, with Conquest and Olli having major positive GCA effects. Galt produced a large negative GCA effect, while Jubilee and Bonanza caused small negative GCA effects. Significant differences between the hybrids were found only in F1. Broad sense heritabilities for protein differences between the parents were 0.57 and 0.72 in the two experiments, and were significant at the 5 and 1% levels of significance, respectively. Conquest had significantly higher protein than Bonanza, with Olli being intermediate. Galt had lower protein than Jubilee, but this difference was significant in only one experiment. The differences among the five cultivars for mean grain protein percentage and general combining ability are significant in relation to breeding for malting and feed type barleys.

STUDIES ON COMBINING ABILITY IN STRAWBERRY (FRAGARIA × ANANASSA): I. NUMBER OF INFLORESCENCES, NUMBER OF FLOWERS, DAYS TO MATURITY AND NUMBER OF FRUITS

1981 ◽  
Vol 23 (3) ◽  
pp. 373-378 ◽  
Author(s):  
Shri Dhar Lal ◽  
Jitendra Nath Seth
Keyword(s):  
Combining Ability ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Fragaria Ananassa ◽  
Specific Combination ◽  
Cytoplasmic Effects ◽  
Days To Maturity ◽  
Complete Diallel Cross

A 10 × 10 complete diallel cross was carried out in the strawberry (Fragaria × ananassa Duch.). Significant general (gca) and specific combining ability (sea) effects were recorded. The variances due to general combining ability exceeded the variances due to specific combining ability. Cytoplasmic effects were also noted. The variety Kalimpong Local was found to be a good general combiner for number of inflorescences, number of flowers and number of fruits. The variety Albritton had highest gca effect for number of inflorescences. The variety Premier was a good general combiner for number of flowers. The Redcoat showed highest gca effect for days to maturity. The best specific combination for number of inflorescences was Phenomenal × Jeolikote Local in F1 and Premier × Kalimpong Local in F2. For number of fruits Albritton × Kalimpong Local and Premier × Cavalier were the best.

Use of GGE biplot methodology for genetic analysis of yield and related traits in melon (Cucumis melo L.)

2012 ◽  
Vol 92 (1) ◽  
pp. 77-85 ◽  
Author(s):  
Hamid Dehghani ◽  
Ehsan Feyzian ◽  
Mokhtar Jalali ◽  
Abdolmajid Rezai ◽  
Fenny Dane
Keyword(s):  
Genetic Analysis ◽  
Combining Ability ◽  
Cucumis Melo ◽  
Diallel Cross ◽  
Average Weight ◽  
Gge Biplot ◽  
Fruit Number ◽  
Biplot Analysis ◽  
Complete Diallel Cross ◽  
Cucumis Melo L

Dehghani, H., Feyzian, E., Jalali, M., Rezai, A. and Dane, F. 2012. Use of GGE biplot methodology for genetic analysis of yield and related traits in melon ( Cucumis melo L.). Can. J. Plant Sci. 92: 77–85. A complete diallel cross experiment of six local Iranian melon populations (Eyvanaki, Abasali, Tashkandi, Hose-sorkh, Mashhadi and Mirpanji) and one cultivar (Ananasi) was conducted. Fruit number, average weight per fruit, yield and acceptable yield were re-evaluated using GGE biplot methodology. The two principal components of biplot explained 70, 58, 86 and 88% of total observed variation for yield, acceptable yield, average weight per fruit and fruit number per plant, respectively. Mirpanji had the highest GCA for yield, acceptable yield and average weight per fruit, but the highest negative GCA for fruit number per plant. Abasali showed the highest positive GCA for fruit number. Biplot analysis allowed a rapid and effective overview of general combining ability (GCA) and specific combining ability (SCA) effects of the populations, their performance in crosses, as well as grouping patterns of similar genotypes.

CHARACTERISTICS OF TOBACCO FROM CROSSES BETWEEN BURLEY AND FLUE-CURED CULTIVARS

1971 ◽  
Vol 13 (2) ◽  
pp. 179-185 ◽  
Author(s):  
Bronius Povilaitis
Keyword(s):  
Combining Ability ◽  
Reducing Sugars ◽  
Sugar Content ◽  
Diallel Cross ◽  
Subjective Rating ◽  
Body Color ◽  
Total Alkaloids ◽  
Complete Diallel Cross ◽  
The Mean ◽  
Cross Test

Four burley and four flue-cured tobacco cultivars were selfed and crossed in all possible combinations to produce seed for a complete diallel cross test which was grown in 1965. Burley parents and burley × burley entries were omitted from the test in 1967 and only selected burley × flue crosses and their flue-cured parent were grown in 1968.Mean squares for the general combining ability were significant for yield, lamina weight, filling value, total alkaloids and reducing sugars, and non-significant for total nitrogen content. The mean squares for specific combining ability were significant for all six characters, suggesting that in the inheritance of these characters, additivity and dominance are both important. Heterosis effects for yield, lamina weight and reducing sugars were significant, but non-significant for days to flower and total alkaloids. The burley × flue hybrids gave considerably higher yields than their flue-cured parental cultivars. Lamina weight and the reducing sugar content of the hybrids was lower than the flue-cured tobacco cultivars. The subjective rating of the hybrids for body, color and texture of the cured leaf gave lower values than those assigned to the flue-cured parents.

Genetic relationships between seed yield components and earliness in Vicia faba L. and the breeding implications

1977 ◽  
Vol 89 (3) ◽  
pp. 643-654 ◽  
Author(s):  
M. H. Poulsen
Keyword(s):  
Vicia Faba ◽  
Seed Yield ◽  
Combining Ability ◽  
Yield Components ◽  
Genetic Relationships ◽  
Genetic Correlations ◽  
Diallel Cross ◽  
High Yield ◽  
Hybrid Vigour ◽  
Complete Diallel Cross

SummaryData are presented on the relationship between seed yield, its distribution and the duration of growth. A plant model is proposed to achieve earlier ripening as well as high yield. The possibility of achieving this model is evaluated.The F1 and F2 progenies of a complete diallel cross between seven inbred lines of field beans (Vicia faba spp. minor) were studied in order to elucidate the possibilities for breeding for earlier ripening without sacrificing seed yield. In a space-planted field trial the inheritance of and relationship among yield and earliness characters were examined.On average the F1 generation was superior to F2 in seed yield as well as earliness of flowering and ripening. General combining ability (g.c.a.) effects were highly significant for all the characters studied and very high narrow-sense heritabilities were found for most characters. Specific combining ability (s.c.a.) effects were significant for all characters except for number of inflorescences, and significant reciprocal effects were found for seed yield and date of anthesis.Because of the importance of g.c.a. effects, the phenotypic correlations were mainly determined by, and therefore similar to, the additive genetic correlations in showing a positive relationship between yield and the duration of pre- as well as postanthesis growth. However, a relatively strong negative non-additive genetic correlation was found between yield and duration of post-anthesis growth.Path analysis showed that 70–82% of the variation in post-anthesis growth was accounted for by the distribution of seed yield described by four yield components, thus supporting the hypothesis that the duration of post-anthesis growth is highly dependent on the distribution and size of the seeds.Two possibilities for breeding earlier-ripening, high-yielding cultivars are suggested: (1) exploiting hybrid vigour in terms of earlier ripening and (2) reducing the duration of post-anthesis growth byselecting for more seeds per pod and more pods per inflorescence.

scholarly journals Genetic effects on seed quality in diallel crosses of popcorn

2013 ◽  
Vol 37 (6) ◽  
pp. 502-511 ◽  
Author(s):  
Pablo Diego Silva Cabral ◽  
Antonio Teixeira do Amaral Júnior ◽  
Henrique Duarte Vieira ◽  
Juliana Saltires Santos ◽  
Ismael Lourenço de Jesus Freitas ◽  
...  
Keyword(s):  
Combining Ability ◽  
Seed Quality ◽  
Crop Yields ◽  
Female Parent ◽  
Diallel Cross ◽  
Genetic Effects ◽  
Reciprocal Effects ◽  
Strongly Correlated ◽  
Complete Diallel Cross ◽  
The Ideal

The failure to obtain the ideal stand is one of the causes of decreased crop yields, in this sense it is important to investigate the genetic effects related to seed quality. The aim of this study was to measure the general combining ability (GCA), the specific combining ability (SCA) and the reciprocal effects (RE) for popcorn seed quality in addition to evaluate the association between germination and vigor tests with field emergencein order to identify hybrids with better germination and vigour. Ten inbred lines were evaluated using a complete diallel cross with reciprocals. Seed quality was measured by germination tests (GT) and by modified cold vigour tests (MCV). In the GT, the numbers of strong normal seedlings (SNS), weak normal (WNS), abnormal (AS) and ungerminated seeds (UGS) were counted. In the MCV, the numbers of normal seedlings (NPC), abnormal (ASC) and ungerminated seeds (UGSC) were counted, and the plants' dry matter (DM) was measured. Analysis of variance for GCA, SCA and RE were significant for all variables. The quadratic components for SCA were higher than those for GCA for the SNS, AS, UGS, ASC and UGSC traits, which indicates higher significance for the non-additive effects. The most favourable GCA estimates, were found in lines P3 and L70. The best hybrids were P1xL70, P3xP6 and P8xL70. The RE results showed that L70 and P3 should be used as the female parent in the P1xL70 and P3xP6 hybrid crosses, respectively. The MCV was the test that was most strongly correlated with field emergence, with a magnitude of 0.667.

scholarly journals Combining Ability Analysis in Complete Diallel Cross of Watermelon (Citrullus lanatus(Thunb.) Matsum. & Nakai)

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
M. Bahari ◽  
M. Y. Rafii ◽  
G. B. Saleh ◽  
M. A. Latif
Keyword(s):  
Combining Ability ◽  
Citrullus Lanatus ◽  
Diallel Cross ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Soluble Solid Content ◽  
Gene Effects ◽  
Early Maturity ◽  
Soluble Solid ◽  
Complete Diallel Cross

The experiments were carried out in two research stations (MARDI Bukit Tangga, Kedah, and MARDI Seberang Perai, Penang) in Malaysia. The crossings were performed using the four inbred lines in complete diallel cross including selfs and reciprocals. We evaluated the yield components and fruit characters such as fruit yield per plant, vine length, days to fruit maturity, fruit weight, total soluble solid content, and rind thickness over a period of two planting seasons. General combining ability and its interaction with locations were statistically significant for all characteristics except number of fruits per plant across the environments. Results indicated that the additive genetic effects were important to the inheritance of these traits and the expression of additive genes was influenced greatly by environments. In addition, specific combining ability effect was statistically evident for fruit yield per plant, vine length, days to first female flower, and fruit weight. Most of the characters are simultaneously controlled by additive and nonadditive gene effects. This study demonstrated that the highest potential and promising among the crosses was cross P2 (BL-14) × P3 (6372-4), which possessed prolific plants, with early maturity, medium fruit weight and high soluble solid contents. Therefore this hybrid might be utilized for developing high yielding watermelon cultivars and may be recommended for commercial cultivation.

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