scholarly journals Influence of plasmogenes on the productivity of morphogenesis in strawberry (Fragaria x ananassa Duch.)

2012 ◽  
Vol 61 (2) ◽  
pp. 3-10 ◽  
Author(s):  
Jadwiga Żebrowska ◽  
Agata Pacek
Keyword(s):  
Combining Ability ◽  
Reciprocal Cross ◽  
General Combining Ability ◽  
Fragaria X Ananassa ◽  
Cytoplasmic Inheritance ◽  
Reciprocal Crosses ◽  
Parental Combination ◽  
Plant Characteristics ◽  
Breeding Clone

Plasmogenes are largely located in mitochondria or plastids and they can influence the inheritance of many plant characteristics. This phenomenon is called cytoplasmic inheritance and can be detected on the basis of the expression of a trait in progeny F<sub>1</sub> obtained from single and reciprocal crosses. The aim of this study was to examine the cytoplasmic inheritance of <i>in vitro</i> productivity of morphogenesis in three genotypes of Fragaria x ananassa Duch., i.e. the cultivars 'Dukat', 'Teresa' and the breeding clone no. 590. Single and reciprocal crosses were done according to Griffi ng's method 3. The value of general combining ability (GCA) indicated cv. 'Teresa' as the best maternal component for crossing and 'Dukat' as the worst. The negative reciprocal cross effects (r<sub>ij</sub>) revealed the cytoplasmic inheritance for cv. 'Dukat' as maternal form and positive r<sub>ij</sub> for the breeding clone no. 590 indicated the nuclear inheritance of morphogenetic ability. Cv. 'Teresa', as maternal component, showed nuclear inheritance of that trait in crossing with cv. 'Dukat' and with 590 cytoplasmic inheritance. The productivity of morphogenesis in strawberry depended on the parental combination and the direction of crossing.

scholarly journals combining ability for yield and yield contributing characters of white jute (Corchorus capsularis L.)

1970 ◽  
Vol 39 (1) ◽  
pp. 79-85
Author(s):  
Rahima Khatun ◽  
RH Sarker ◽  
MA Sobhan
Keyword(s):  
Key Words ◽  
Plant Height ◽  
Combining Ability ◽  
Reciprocal Cross ◽  
General Combining Ability ◽  
Predominant Role ◽  
Base Diameter ◽  
Corchorus Capsularis ◽  
Additive Gene ◽  
Fibre Yield

Crosses were made between three varieties and seven accessions of white jute (Corchorus capsularis L.) in all possible combinations to establish 10 × 10 full diallel set. Variances for general combining ability (GCA) and specific combining ability (SCA) were significant or highly significant for all the characters indicating additive and non-additive gene actions played predominant role for expression of these characters. The magnitudes of GCA variance were higher than the corresponding SCA variance confirmed the predominance of additive genetic variations for these traits. The variety CVL-1 and Acc. 1831 were good general combiners for plant height, technical height, base diameter, number of nodes, bark weight, fibre weight and stick weight. Crosses, var. CVL-1 × Acc. 1831, Accs. 3695 × 4087, Accs. 1831 × 1833, Accs.1831 × var.CC-45, Acc. 2146 × var. A-38 and Acc. 2146 × var.CC-45 revealed significant positive SCA effect for fibre weight. Significant reciprocal SCA effect was observed in crosses, Accs.1832 × 3695, Accs.1833 × 1831 and Acc. 4087 × var.CVL-1. Crosses, var. CVL-1 × Acc.1831, Accs. 3695 × 4087, Acc.1831 × var.CC-45, Acc.2146 × var.CC-45 and a reciprocal cross, Accs.1833 × 1831 were found to be good specific combiners for bark weight, fibre weight and stick weight. Key words: Combining ability; Fibre yield; White jute DOI: 10.3329/bjb.v39i1.5530Bangladesh J. Bot. 39(1): 79-85, 2010 (June)

AN EVALUATION OF DISEASE RESISTANT CLONES OF BROMUS INERMIS (LEYSS.) AS BREEDING STOCKS

1974 ◽  
Vol 54 (4) ◽  
pp. 743-747 ◽  
Author(s):  
P. D. WALTON
Keyword(s):  
Plant Height ◽  
Combining Ability ◽  
Significant Variation ◽  
Dry Matter ◽  
Reciprocal Cross ◽  
General Combining Ability ◽  
Bromus Inermis ◽  
Production Plant ◽  
Disease Resistant ◽  
Matter Production

Seven clones of smooth bromegrass (Bromus inermis Leyss.), five of which were resistant to diseases caused by Pyrenophora bromi (Dred.) and Selenophoma bromigena (Sacc.), were crossed in all combinations forming a 7 × 7 diallel. Plants of both the F1 and its reciprocal cross, as well as the parents, were grown in the field at Edmonton and were measured for dry matter production, plant diameter, days to head emergence and plant height during their 2nd yr. Highly significant variation due to general and specific combining ability were recorded for all the traits. Four of the disease-resistant clones were low yielding and small in plant diameter. On the basis of general combining ability effects these same clones showed little promise as parents. However, one of the disease-resistant clones, B42, was found to perform relatively well and should be of value as a breeding stock.

scholarly journals Quantitative assessment of the morphogenetic efficiency in strawberry Fragaria × ananassa Duch

2009 ◽  
Vol 21 (2) ◽  
pp. 53-64 ◽  
Author(s):  
Jadwiga Żebrowska ◽  
Magdalena Dyduch
Keyword(s):  
Combining Ability ◽  
Quantitative Assessment ◽  
The Other ◽  
Fragaria Ananassa ◽  
Reciprocal Crosses ◽  
Negative Effect ◽  
The Mean ◽  
Positive Effect ◽  
Extranuclear Inheritance ◽  
Breeding Clone

Abstract A quantitative assessment of the morphogenetic capability of strawberry was performed. In the experiment, three genotypes of strawberry Fragaria × ananassa Duch. were tested, including two cultivars: ‘Plena’ and ‘Kent’, and one breeding clone no. „394‟. Morphogenetic efficiency was expressed by the mean number of microplants produced by the explant of progeny combinations F1 in two subsequent subcultures. Progeny F1 was obtained after crossings, which were carried out according to Griffing's method 3, with the use of the parental genotypes given above. Quantitative parameters: combining ability and the effect of reciprocal crosses estimated in the progeny F1 allowed to assess the genetic control of the analysed feature. The high positive effect of reciprocal crosses showed that in „Plena‟ the morphogenetic capability is genetically controlled mainly by nuclear genes. On the other hand, aspects of extranuclear inheritance of the analysed trait were observed in ‘Kent’, which proved a weak explant ability of the progeny combination F1 to produce microplants. This resulted in the high negative effect of reciprocal crosses for that cultivar

scholarly journals In vitro Androgenesis of Some Wheat (Triticum aestivum L.) Varieties and their F1, F2 Progenies and Combining Ability of Embryoid Production

2014 ◽  
Vol 18 (2) ◽  
pp. 57-60
Author(s):  
M Hasan ◽  
J Pauk ◽  
Z Kertesz
Keyword(s):  
Triticum Aestivum ◽  
Anther Culture ◽  
Combining Ability ◽  
General Combining Ability ◽  
Polygenic Effect ◽  
Parental Lines ◽  
F2 Generation

Six parental lines along with their F1 and F2 progenies were investigated for general combining ability (GCA) effects on embryo-like-structure (ELS) production in anther culture. Significant differences were found among the parents in respect to the ELS production. Evaluating the combining ability effects, among the female parents Alfold showed the best result in ELS production, while Palma was the best among the male lines. While comparing F1 and F2 generations, in most of the cases (except one) F2 generation was superior in ELS production. Polygenic effect plays a key role in such type of superiority in the F2 generation. The reason for such superiority may be due to the recombination of superior genes.DOI: http://dx.doi.org/10.3329/pa.v18i2.18091 Progress. Agric. 18(2): 57 - 60, 2007

scholarly journals COMBINING ABILITY OF SUNFLOWER INBRED LINES FOR in vitro TRAITS / APTITUD COMBINATORIA DE LÍNEAS ENDOCRIADAS DE GIRASOL PARA CARACTERES in vitro / VALEUR EN COMBINAISON DE LIGNÉES DE TOURNESOL POUR CARACTÉRES in vitro

Helia ◽  
2001 ◽  
Vol 24 (35) ◽  
pp. 17-24
Author(s):  
G. Nestares ◽  
M.L. Mayor ◽  
R. Zorzoli ◽  
L. Mroginski ◽  
L. Picardi
Keyword(s):  
Acetic Acid ◽  
Experimental Design ◽  
Factorial Design ◽  
Combining Ability ◽  
Inbred Lines ◽  
General Combining Ability ◽  
Regeneration Medium ◽  
Male Sterile ◽  
Additive Component

SUMMARYSix cytoplasmic male sterile lines used as females were crossed with four fertile lines used as males in a factorial design. The 24 F1 hybrids obtained were evaluated in vitro for their organogenesis ability from cotyledonary explants. The regeneration medium was MS supplemented with 200 mg/l of glutamine, 1 mg/l of indol-3-acetic acid and 2 mg/l of kinetin. The experimental design was a complete randomized block in 2 replications. General combining ability variances were significant for some of the in vitro traits, while the variance due to specific combining ability was nonsignificant in all cases. Some of these positive and negative values of general combining ability were significant for the studied traits. These results suggest the importance of the additive component in the genetic control of the studied in vitro traits.

The in vitro digestibility of parents and hybrids of cocksfoot (Dactylis glomerata L.)

1968 ◽  
Vol 19 (3) ◽  
pp. 373 ◽  
Author(s):  
R Knight ◽  
NG Yates
Keyword(s):  
Combining Ability ◽  
Dactylis Glomerata ◽  
General Combining Ability ◽  
In Vitro Digestibility ◽  
Growth Rhythm ◽  
In Vitro Technique ◽  
Selection For ◽  
Dactylis Glomerata L

The digestibility of a range of genotypes of cocksfoot (Dactylis glomerata L.) and their hybrids was estimated by an in vitro technique at eight harvests over a period of 14 months. The material for analysis was grown in a Mediterranean type environment with summer irrigation and obtained by recurrent defoliation of sward plots. Digestibility values tended to be lower in summer than in winter, although some material showed a fall in digestibility in the middle of winter. Within a harvest there were correlations between general combining ability and parental performance, but there was little uniformity in ranking of parents or their progenies from one harvest to the next, which would make selection for uniform high digestibility very difficult. Reasons for the fluctuations are not known, and were not obviously correlated with any aspect of the growth rhythm apart from a correlation with heading on one harvest occasion.

Effects of Yield Component Selection on the General Combining Ability of Maize Inbred Lines 1

Crop Science ◽  
1976 ◽  
Vol 16 (6) ◽  
pp. 807-811 ◽  
Author(s):  
J. L Geadelmann ◽  
R. H. Peterson
Keyword(s):  
Combining Ability ◽  
Inbred Lines ◽  
General Combining Ability ◽  
Yield Component ◽  
Component Selection ◽  
Maize Inbred Lines

scholarly journals Genetic Dissection of the General Combining Ability of Yield-Related Traits in Maize

2020 ◽  
Vol 11 ◽  
Author(s):  
Xin Lu ◽  
Zhiqiang Zhou ◽  
Zhaohui Yuan ◽  
Chaoshu Zhang ◽  
Zhuanfang Hao ◽  
...  
Keyword(s):  
Combining Ability ◽  
General Combining Ability ◽  
Genetic Dissection

HETEROSIS, COMBINING ABILITY, AND PREDICTED SYNTHETICS FROM A DIALLEL CROSS IN SUNFLOWERS (HELIANTHUS ANNUUS L.)

1966 ◽  
Vol 46 (1) ◽  
pp. 59-67 ◽  
Author(s):  
Eric D. Putt
Keyword(s):  
Helianthus Annuus ◽  
Combining Ability ◽  
Oil Content ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Helianthus Annuus L ◽  
The Mean ◽  
Seed Characters ◽  
Mature Weight

Heterosis occurred for the eight plant and seed characters studied. It was most frequent for yield of seed and height of plant. Mean squares for general combining ability (gca) and specific combining ability (sca) were significant (P =.01) for all characters. The estimated components for gca were greater than for sca for days to mature, weight per bushel, and percent oil in the seed; less for height and yield of seed; and essentially the same for days to bloom, diameter of head, and weight per 1000 seeds.The yield of seed and percent oil in the seed, for the highest ranking 100 synthetics that could be composed from the 10 lines, was predicted in F6 assuming 50 and 60% outcrossing between F2 and F6. Virtually all values exceeded the mean performance of four check samples of commercial hybrids. Many exceeded the highest rank check for oil content in the seed. Fourteen of the highest ranking 100 synthetics for yield and 30 for oil content consisted of two or three lines. It was concluded that synthetics can be superior to the present hybrids in heterosis and that desirable synthetics can be made from only a few lines.

HETEROSIS IN DIALLEL CROSSES AMONG SIX VARIETIES OF HARD RED SPRING WHEAT

1969 ◽  
Vol 11 (4) ◽  
pp. 810-822 ◽  
Author(s):  
D. R. Knott ◽  
S. S. Sindagi
Keyword(s):  
Spring Wheat ◽  
Combining Ability ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Diallel Crosses ◽  
Hard Red Spring Wheat

Diallel crosses were made among six varieties of hard red spring wheat that differed considerably in yield and other characteristics. The F1 hybrids were tested at two seeding rates and the F2, hybrids at one. Heterosis was not great in either generation and no cross appeared to be promising. General combining ability was much more important than specific combining ability and parental yields gave reasonable predictions of hybrid yields. Yields of hybrids at the two seeding rates were closely correlated.

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