scholarly journals Lymphomatosis in Chickens as Influenced by Diallel Crossing

1945 ◽  
Vol 24 (5) ◽  
pp. 387-390 ◽  
Author(s):  
Nelson F. Waters
Keyword(s):  
Diallel Crossing

scholarly journals Daya Gabung Beberapa Varietas Padi (Oryza sativa L.) pada Persilangan Dialel Menggunakan Metode Griffing II

2021 ◽  
pp. 84-93
Author(s):  
Anak Agung Ketut Sudharmawan ◽  
Baiq Erna Listiana ◽  
Sofi Rianti
Keyword(s):  
Oryza Sativa ◽  
Plant Height ◽  
Power Analysis ◽  
Oryza Sativa L ◽  
Panicle Length ◽  
Grain Number ◽  
Significant Difference ◽  
Diallel Crossing ◽  
High Yielding Varieties ◽  
Materials Used

Diallel crossing is a method that is widely used to determine the ability to combine each individual so that it can identify the potential elders to be used in crossbreeding programs to assemble high yielding varieties. This experiment aims to determine the combining power of dialelic crosses of several varieties of rice using the Griffing II method, carried out in the experimental field of the Faculty of Agriculture, Mataram University in Nyiur Lembang Village, Narmada District, West Lombok Regency, from February to July 2019. This experiment uses the method experiments carried out in the field. The materials used in this experiment were four parents, namely IPB 3S variety, Situ Patenggang variety, Inpari 32 and G11 strain and the phenotype of the cross between the four parents. The experimental results showed that the effects of general affinity and special affinity for all observed characters (plant height, number of productive tillers, number of non-productive tillers, panicle length, number of filled grain, number of empty grain and weight of 100 grains) were significantly different, except on the effect of general affinity for the number of non-productive tillers showed no significant difference. The results of the combined power analysis of the four elders were positive, so it can be said that the four elders would get good results when crossed with a number of other genotypes.

scholarly journals Comportamento Per se de híbridos de capim-elefante para fins energéticos

2016 ◽  
Vol 7 (1) ◽  
pp. 73
Author(s):  
Bruna Rafaela Da Silva Menezes ◽  
Rogério Figueiredo Daher ◽  
Geraldo De Amaral Gravina ◽  
Romildo Domingos Gottardo ◽  
Larissa Scheideger Athayde Schneider ◽  
...  
Keyword(s):  
Dry Matter ◽  
Agronomic Traits ◽  
Elephant Grass ◽  
Experimental Station ◽  
Matter Production ◽  
Diallel Crossing ◽  
Blade Width ◽  
Dry Seasons ◽  
Per Se ◽  
Partial Diallel

The aim of this study was to evaluate the Per se performance of elephant grass hybrids obtained by partial diallel crossing and also their parents for energy purposes through agronomic traits during rainy and dry seasons. The experiment was conducted at Pesagro experimental station, Campos dos Goytacazes, RJ, Brazil, in randomized blocks, with three repetitions. The crosses were made between contrasting parents in a partial diallel scheme with 5 female parents x 5 male parents. The treatments consisted of ten parents, twenty-five hybrid combinations and the control. Three cuts were realized for evaluations (April and October 2013 and April 2014). The characteristics evaluated were: plant height (ALT), in m; stem diameter (SD), in cm; leaf blade width (LB), in cm; number of tillers per linear meter (NP); dry matter percentage (%DM) and dry matter production (DMP), in t.ha-1. Variance analysis were performed and the means were grouped according to Scott-Knott test (P <0.05). It was oberved that the hybrid H4 (Cuban Pinda x Taiwan A-144), H7 (Cameroon - Piracicaba x Três Rios), H8 (Cameroon - Piracicaba x Mercker 86-Mexico), H10 (Cameroon - Piracicaba x Roxo), H13 (P241-86-Piracicaba x Mercker 86-Mexico), H17 (IAC Campinas x Três Rios) and H18 (IAC-86-Campinas x Mercker 86-Mexico) presented high biomass production.

scholarly journals Genetic analysis of spike traits in two- and multi-rowed barley crosses

Genetika ◽  
2012 ◽  
Vol 44 (3) ◽  
pp. 475-482
Author(s):  
Milomirka Madic ◽  
Desimir Knezevic ◽  
Aleksandar Paunovic ◽  
Dragan Djurovic
Keyword(s):  
Variance Components ◽  
Genetic Variance ◽  
Grain Weight ◽  
Spike Length ◽  
Grain Number ◽  
Partial Dominance ◽  
Grain Number Per Spike ◽  
Diallel Crossing ◽  
Barley Genotypes ◽  
Mode Of Inheritance

Mode of inheritance and genetic variance components for spike length, grain number per spike and grain weight per spike were evaluated in four parental genotypes and their F1 and F2 hybrids obtained through incomplete diallel crossing. Multi-rowed barley genotypes HVW-247 and Partizan and two-rowed barley genotypes KG-15 and NS-293 were selected for the crossing based on the trait concept with the parents being divergent for spike length, grain number per spike and grain weight per spike. The average values for spike length in F1 and F2 generations were intermediate or close to those of the parent having longer spikes, with the mode of inheritance being partial dominance, dominance or overdominance, depending on the crossing combination. The six-rowed x six-rowed and two-rowed x two-rowed crossing combinations showed dominance of increased grain number per spike and increased grain weight per spike in the inheritance of grain number per spike and grain weight per spike, respectively, whereas the six-rowed x two-rowed cross was predominated by partial dominance.

scholarly journals A Proposed Model for Inheritance of Primocane Fruiting in Tetraploid Erect Blackberry

2000 ◽  
Vol 125 (2) ◽  
pp. 217-221 ◽  
Author(s):  
Jose Lopez-Medina ◽  
James N. Moore ◽  
Ronald W. McNew
Keyword(s):  
Negative Relationship ◽  
Recessive Gene ◽  
Segregation Ratio ◽  
Breeding Strategies ◽  
Single Recessive Gene ◽  
Tetrasomic Inheritance ◽  
Proposed Model ◽  
Inheritance Model ◽  
Diallel Crossing ◽  
Scheme Selection

Inheritance of the primocane-fruiting (PF) characteristic was studied in seedling populations of tetraploid (4x) blackberries (Rubus subgenus Rubus). Four selections (A-1836, A-593, A-830, and A-1680) and two cultivars (`Arapaho' and `Shawnee') were used as parents in a full diallel crossing scheme. Selection A-593 was used as the main source for PF due to its origin (`Brazos' × `Hillquist,' the latter an old PF cultivar). All parents except `Shawnee' have A-593 in their parentage; among the parents, only A-1836 fully expresses PF. Selfing of A-1836 resulted in 100% PF offspring, indicating that A-1836 is homozygous for this trait. Selfing of A-593, A-830, and `Arapaho' produced either a 35:1 or a 20.8:1 FF (floricane or summer-fruiting):PF segregation ratio, fitting a tetrasomic inheritance model under either random chromosome assortment (RCSA) or random chromatid assortment (RCTA), respectively, also suggesting that PF is controlled by a single recessive gene and that the parents are duplex (AAaa) for this trait. Selection A-1680 and `Shawnee' selfed did not produce PF progeny, but when crossed with the nulliplex A-1836, gave a 27:1 FF:PF ratio, indicating RCTA and that they are triplex (AAAa) for PF. According to these research, both gametic outputs (RCSA and RCTA) seem to operate in 4x blackberry. The intensity in expression of PF had a negative relationship with time to harvest, with those seedlings showing the highest PF scores producing a crop in early to mid-August. This knowledge will be helpful in implementing breeding strategies to produce PF blackberry cultivars.

scholarly journals Resistance evaluation of five varieties of cowpea and their F1 descendants from a diallel crossing to cowpea aphid-borne mosaic virus in Burkina Faso

2018 ◽  
Vol 12 (2) ◽  
pp. 668
Author(s):  
Antoine Barro ◽  
Téyouré Benoit Joseph Batieno ◽  
Nerbéwendé Sawadogo ◽  
Jean Baptiste De La Salle Tignegre ◽  
Kiswendsida Romaric Nanema ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Mosaic Virus ◽  
Resistance Evaluation ◽  
Cowpea Aphid ◽  
Diallel Crossing

scholarly journals Heritability and Combining Ability for Cold Hardiness from Partial Dialleles in Iranian Pomegranate Cultivars

HortScience ◽  
2018 ◽  
Vol 53 (4) ◽  
pp. 427-431 ◽  
Author(s):  
Ali Akbar Ghasemi Soloklui ◽  
Ali Gharaghani ◽  
Nnadozie Oraguzie ◽  
Armin Saed-Moucheshi
Keyword(s):  
Genetic Control ◽  
Combining Ability ◽  
Cold Hardiness ◽  
Fruit Breeding ◽  
Narrow Sense Heritability ◽  
Diallel Crossing ◽  
Cold Condition ◽  
Half Diallel ◽  
Natural Freezing ◽  
Made In

The development of cultivars with broader climatic adaptation has recently become the objective of most fruit breeding programmers. Regarding the importance of genetic control of cold hardiness as an influential characteristic for pomegranate and lacking studies in this area, the genetic control of cold hardiness in pomegranate using a partial mating scheme was studied. Five parents, including ‘Rabab Post Ghermez Neyriz’, ‘Malas Yazdi’, ‘Poost Sefid Dezful’, ‘Malas Pishva Varamin’, and ‘Poost Nazok Torosh Abarkuh’ with different cold hardiness capability were screened following a cold hardiness test in the laboratory and an evaluation of cold injury after natural freezing events in the field. The five screened cultivars were crossed in half-diallel crossing scheme with a total of 10 crosses in the Spring of 2014. Cold hardiness of the parent cultivars and the F1 progenies were investigated using the electrolyte leakage (EL) method. Results showed that both general combining ability (GCA) and specific combining ability (SCA) were statistically significant. The hardiest parent (‘Poost Nazok Torosh Abarkuh’) showed the largest positive GCA effect (1560.59) for winter survival, suggesting that this parent is capable to produce tolerant offspring with high breeding values in crossing programs. The significant SCA in this study suggests that specific crosses should be targeted to produce highly capable offspring. Cross between ‘Poost Nazok Torosh Abarkuh’ and ‘Malas Pishva Varamin’ showed high value for SCA (1661.74), indicating capability for production of tolerant offspring to the cold condition. Furthermore, high broad-sense heritability (0.70) and moderate narrow-sense heritability (0.45) for cold hardiness indicate that a reasonable progress could be made in improvement of this trait through conventional breeding.

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