Cross meat layer “Smena” SGC selection with autosex maternal parent f

2020 ◽  
Vol 22 (5) ◽  
pp. 14-17
Author(s):  
A.A. Komarov ◽  
◽  
Zh.V. Yemanuilova ◽  
A.V. Yegorova ◽  
D.N. Yefimov ◽  
...  
Keyword(s):  
Maternal Parent

scholarly journals MODIFICATION OF CHLOROPLAST GENE TRANSMISSION IN SOMATIC FUSION PRODUCTS AND VEGETATIVE ZYGOTES OF CHLAMYDOMONAS REINHARDI BY 5-FLUORODEOXYURIDINE

Genetics ◽  
1981 ◽  
Vol 99 (3-4) ◽  
pp. 371-381
Author(s):  
Rene F Matagne ◽  
Marie-Paule Hermesse
Keyword(s):  
Chloroplast Gene ◽  
Maternal Transmission ◽  
Maternal Parent ◽  
Somatic Fusion ◽  
Chloroplast Markers ◽  
Chloroplast Genomes ◽  
Mutant Strains ◽  
Sexual Crosses ◽  
Fusion Products ◽  
Allele Transmission

ABSTRACT Sexual crosses and somatic fusions were performed between complementing wall-less arg- mutant strains bearing chloroplast markers for resistance to antibiotics. The mode of chloroplast allele transmission was investigated in the diploid colonies developed from both vegetative zygotes and fusion products. Before mating or fusion, one or both of the parental strains were grown for 4 or 8 days on agar containing 5-fluorodeoxyuridine (FUdR, 0.1 to 1.0 mM), which selectively reduces the amount of chloroplast DNA in Chlamydomonas. When one parent was pregrown on FUdR, the frequency of vegetative zygotes transmitting chloroplast alleles of both parents (biparental or BP zygotes) decreased, the reduction being more drastic when the mt parent was treated. Transmission was mainly uniparental maternal (UPm) or paternal (UPp) depending on whether the mt- or the mt+ parent was pregrown for 8 days in the presence of 1 .OmM FUdR. Treatment of both parents led to a strong maternal transmission. In the experiments involving somatic fusion between parent 1 and parent 2(same or opposite mt), the ratio UP1/UP2, which was approximately equal to 1 in the control, decreased or increased according to whether the cells of parent 1 or 2 were pregrown on FUdR. In parallel, the frequency of BP fusion products always decreased. When both parental strains were treated with FUdR, the frequency of BP fusion products also decreased and the ratio UP,/cTP, was roughly equal to 1. The effect of FUdR can be interpreted in terms of reduction of the input frequencies of parental chloroplast genomes at the time of gametic or somatic cell fusion, the bias in favor of the maternal parent being operational only in sexual crosses.

scholarly journals Familial autoimmunity: maternal parent-of-origin effect in juvenile idiopathic arthritis

2007 ◽  
Vol 27 (2) ◽  
pp. 241-244 ◽  
Author(s):  
Andrew Zeft ◽  
Edith S. Shear ◽  
Susan D. Thompson ◽  
David N. Glass ◽  
Sampath Prahalad
Keyword(s):  
Juvenile Idiopathic Arthritis ◽  
Maternal Parent ◽  
Parent Of Origin ◽  
Origin Effect

Benthic Egg Masses and Larval Development of Amblyosyllis Speciosa (Polychaeta: Syllidae)

1998 ◽  
Vol 78 (4) ◽  
pp. 1369-1372 ◽  
Author(s):  
Bruno Pernet
Keyword(s):  
Parental Care ◽  
The Body ◽  
Brood Chamber ◽  
Egg Masses ◽  
Maternal Parent ◽  
Boring Sponge ◽  
Friday Harbor ◽  
Bivalve Shell ◽  
Encrusting Sponges ◽  
Protection Of Embryos

Eggs of the syllid polychaete Atnblyosyllis speciosa are deposited in benthic gelatinous masses. Embryos and larvae develop within these masses until about three weeks after fertilization, after which they crawl or swim away and metamorphose. Only one other syllid, the Mediterranean Syllides edentula, has been reported to form benthic egg masses.While some syllid polychaetes spawn gametes freely into the water column where they are fertilized and develop without additional parental care, most species protect developing embryos in some fashion. Four modes of brood protection have been reported in the syllids. Protection of embryos within the ventral brood chamber of a planktonic adult is characteristic of members of the subfamily Autolytinae, and of some members of the Eusyllinae (Garwood, 1991). Physical attachment of embryos to the body of the maternal parent (external gestation) occurs in all members of the Exogoninae and in a few eusyllines (Heacox & Schroeder, 1978; Garwood, 1991). Viviparity is less common, having been reported in a few species in the subfamily Syllinae (Schroeder & Hermans, 1975; Ben-Eliahu, 1975) and in one exogonine (Pocklington & Hutcheson, 1983). Finally, the formation of benthic egg masses has been described in only one species, the eusylline Syllides edentula Claparède (Cognetti-Varriale, 1971).In this study the benthic egg masses and development of another eusylline, Amblyosyllis speciosa Izuka, 1912, are described. In December 1995, at the Friday Harbor Laboratories (FHL), Washington, USA, five adult worms were found on a bivalve shell heavily infested with the boring sponge Cliona sp. Additional specimens and egg masses were collected in June 1996 and April-June 1997 from encrusting sponges on the FHL breakwater.

scholarly journals Further evidence of a maternal parent-of-origin effect on chromosome 10 in late-onset Alzheimer's disease

2006 ◽  
Vol 141B (5) ◽  
pp. 537-540 ◽  
Author(s):  
Susan Spear Bassett ◽  
Dimitrios Avramopoulos ◽  
Rodney T. Perry ◽  
Howard Wiener ◽  
Bracie Watson ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Late Onset ◽  
Chromosome 10 ◽  
Maternal Parent ◽  
Parent Of Origin ◽  
Origin Effect

Genetic basis of dormancy and differential response to sodium azide in Avena fatua seeds

1988 ◽  
Vol 66 (4) ◽  
pp. 635-641 ◽  
Author(s):  
S. Jana ◽  
M. K. Upadhyaya ◽  
S. N. Acharya
Keyword(s):  
Sodium Azide ◽  
Time Course ◽  
Genetic Basis ◽  
Differential Response ◽  
Avena Fatua ◽  
Maternal Influence ◽  
Maternal Parent ◽  
Wild Oats ◽  
Respiratory Inhibitor ◽  
Pure Lines

Seven crosses, involving either nondormant × dormant or dormant × dormant pure lines of wild oats (Avena fatua L.), were made. Selfing of the hybrid and further hybridization were carried out to produce the F2 and reciprocal backcross generations. The seed germination time-course curves of the parents, their F1, and segregating generations over a 20-week period were studied. Differences in time course of germination in these generations were interpreted in terms of a minimum of three interacting loci. Two pure lines, AN51 and MO73, differed in their response to sodium azide, a respiratory inhibitor, with the former being more responsive. In crosses between these lines, the F1 seeds were also more responsive when AN51 was used as the maternal parent. This differential response of two dormant pure lines and their reciprocal F1s suggests maternal influence in germination response to sodium azide.

Genetic variability in time to germination of sugar-beet clusters

1971 ◽  
Vol 76 (1) ◽  
pp. 27-32 ◽  
Author(s):  
J. P. Battle ◽  
W. J. Whittington
Keyword(s):  
Genetic Variation ◽  
Genetic Variability ◽  
Sugar Beet ◽  
Maternal Effects ◽  
Diallel Cross ◽  
Wild Form ◽  
Maternal Parent ◽  
Germination Characteristics ◽  
Heritability Estimates

SUMMARYAn analysis of germination characteristics of progeny from a diallel cross between five sugar-beet plants showed that the genotype of the maternal parent controlled to a marked extent the behaviour of the progeny. This may be related to the presence in the fruits of inhibitory substances.Some evidence was found for genie and maternal interactions but these were always of less importance than the maternal effects. Heritability estimates from parent, off spring regression and analysis of half-sib family variances demonstrated that genetic variation for germination characteristics had not been eliminated during the improvement of sugar beet from the wild form.

scholarly journals maternally expressed gene1 Is a Novel Maize Endosperm Transfer Cell–Specific Gene with a Maternal Parent-of-Origin Pattern of Expression

2004 ◽  
Vol 16 (5) ◽  
pp. 1288-1301 ◽  
Author(s):  
Jose F. Gutiérrez-Marcos ◽  
Liliana M. Costa ◽  
Corinne Biderre-Petit ◽  
Bouchaib Khbaya ◽  
Donal M. O'Sullivan ◽  
...  
Keyword(s):  
Transfer Cell ◽  
Specific Gene ◽  
Maize Endosperm ◽  
Maternal Parent ◽  
Parent Of Origin ◽  
Endosperm Transfer Cell

THE HARDINESS OF PROGENY FROM RECIPROCAL MALUS CROSSES

1965 ◽  
Vol 45 (2) ◽  
pp. 159-161 ◽  
Author(s):  
R. E. Harris
Keyword(s):  
Reciprocal Cross ◽  
Electrolytic Conductivity ◽  
Maternal Parent ◽  
The Mean

Electrolytic conductivity and field injury of four reciprocal Malus crosses showed that the mean hardiness of the progeny in which the hardier variety was the maternal parent was greater than that of the progeny of the reciprocal cross.

scholarly journals Characterization of Progenies from Intergeneric Hybridization Between Oryza sativa L. and Porteresia coarctata (Roxb.) Tateoka

2017 ◽  
Vol 27 (1) ◽  
pp. 63-76
Author(s):  
Tasmia Islam ◽  
Sudip Biswas ◽  
Umme Habiba Mita ◽  
RH Sarker ◽  
M Sazzadur Rahman ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Ssr Markers ◽  
Oryza Sativa L ◽  
Intergeneric Hybridization ◽  
Chromosome Loss ◽  
Salt Tolerant ◽  
Porteresia Coarctata ◽  
Maternal Parent ◽  
Hybrid Plants ◽  
Coastal Belt

Porteresia coarctata (Roxb.) Tateoka is an endemic halophyte growing all over the coastal belt of Bangladesh, propagating through rhizomes and setting a few ricelike grains. So exploiting the genetic potential of this wild rice as salt tolerant donor in possible wide crosses with rice (2n = 24) could be useful. We attempted intergeneric hybridization between Oryza sativa L. and P. coarctata. The survival rate of hybrid progenies in embryo culture was low but among them 2 hybrid plants were successfully matured from the intergeneric cross between the cultivated induced tetraploid of rice, Latisail (2n = 4x = 48) and P. coarctata (2n = 48). The hybrid plants could be successfully established in soil and were not like either of the parents in morphology although some of their features were similar to their maternal parent, Latisail (4x). Both of the hybrids were investigated through physiological analysis under salinity stress and molecular analyses with rice specific SSR markers. Molecular analysis of the F1 DNA with only 3 SSR markers, RM581, RM20224 and RM25271, out of 36 others tested, showed bands specific to both of the parents, while all had common bands with the maternal parent. Dendrogram analysis of the hybrids with the 36 SSR markers, show that P. coarctata forms a different clade and is clearly separated from Latisail and the hybrids. The putative hybrids however made a subgroup with Latisail. These observations could be possibly explained if chromosome loss of the paternal parent had occurred or may be it was a pleotropic effect of intergeneric hybridization. Physiological screening of the hybrid progenies at the F2 generation in seedling stage showed better result in leaf damage score (LDS) and salinity tolerance than their maternal parent Latisail (4x) at 150 mM salt stress for 10 days. F2 plants from one of the hybrid plants (H‐2) showed better performance but there was a large variation in response from each of the individual progenies. So, it is likely that some of the salt tolerant characteristics of the pollen parent might have been transferred to the recipient Latisail (4x). For introgression of better salt tolerant loci from P. coarctata, more wide hybrids will need to be produced and repeatedly crossed with P. coarctata.Plant Tissue Cult. & Biotech. 27(1): 63-76, 2017 (June)

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