scholarly journals Androgenic responses of winter wheat (Triticum aestivum L.) combinations in in vitro anther culture

Genetika ◽  
2020 ◽  
Vol 52 (1) ◽  
pp. 335-350
Author(s):  
Osama Kanbar ◽  
Csaba Lantos ◽  
Erzsebet Kiss ◽  
Janos Pauk
Keyword(s):  
Winter Wheat ◽  
Anther Culture ◽  
Triticum Aestivum L ◽  
Wheat Breeding ◽  
Published Data ◽  
In Vitro Production ◽  
The Mean ◽  
Dh Lines ◽  
Vitro Production

The androgenic parameters were investigated by in vitro anther culture (AC) on nine F2-5 breeding combinations of winter wheat (Triticum aestivium L.). Each combination produced embryo-like structures (ELS), green plantlets, albino plantlets, transplanted plantlets and acclimatized plantlets, with respect to the number of anthers in AC. The number of AC-derived ELS was between 11.73 and 52.76 ELS/100 anthers with the mean of 26.22 ELS/100 anthers, out of which the number of regenerated green plantlets varied from 3.20 to 26.40 green plantlets/100 anthers and the mean was 9.76 green plantlets/100 anthers, while the number of transplanted plantlets ranged from 2.16 to 21.77 transplanted plantlets/100 anthers. Furthermore, the number of albinos/100 anthers was mitigated and varied between 0.72 and 6.20 albinos/100 anthers. We also studied the number of green and albino plantlets per 100 ELS. The rate of green plantlets per 100 ELS ranged between 14.81% and 64.01%, with the overall mean 33.59%, while the rate of albinos per 100 ELS ranged from 4.82% to 20.70% with the overall mean 11.93%. In our experiment, the rate of acclimatized plantlets (70.15-91.57%) depended mostly on the combination. This study asserted the importance of AC method in wheat for in vitro production of green plants. Although albinism was found in each combination, it did not hinder the production of green plantlets. The satisfying results were achieved in green plantlets production compared to the previously published data, but further improvement will be needed continuously, experiment by experiment. The generated acclimatized plantlets will be used in the wheat breeding program as doubled haploid (DH) lines.

scholarly journals Generation of doubled haploid lines from winter wheat (Triticum aestivum L.) breeding material using in vitro anther culture

2020 ◽  
Vol 56 (No. 4) ◽  
pp. 150-158
Author(s):  
Osama Zuhair Kanbar ◽  
Csaba Lantos ◽  
Paul Karumba Chege ◽  
Erzsébet Kiss ◽  
János Pauk
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Anther Culture ◽  
Doubled Haploid ◽  
Genetic Material ◽  
Triticum Aestivum L ◽  
Average Value ◽  
Doubled Haploid Lines ◽  
Dh Lines

We investigated the anther culture (AC) efficiency of thirteen F<sub>4</sub> combinations of winter wheat (Triticum aestivum L.). The genotype dependency was assessed during the induction of the androgenic entities, i.e. embryo-like structures (ELS), regenerated-, green-, albino-, and transplanted plantlets. The number of green plantlets per 100 anthers (GP/100A) varied from 0.36 to 24.74 GP/100A with a mean of 8.31 GP/100A. Albino plantlets (AP) occurred in each combination, ranging from 0.20 to 22.80 AP/100A with an average value of 5.59 AP/100A. Between 25–87.76 doubled haploid (DH) plants per 100 acclimatised plantlets (DH/100ADP), depending on the combination, with a mean of 59.74% were recovered. We have found the highest DH production in the combinations Béres/Midas, Kalász/Tacitus, Béres/Pamier, and Premio/5009. This improves remarkably the choice of basic genetic material in subsequent crossing programmes. These observations emphasise the usability and efficiency of in vitro AC in producing a large number of DH lines for breeding and the applied researches of winter wheat. Although albinism was found in each combination, it was mitigated by the in vitro AC application.

scholarly journals Utilization of in Vitro Anther Culture in Spelt Wheat Breeding

Plants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 436 ◽  
Author(s):  
Csaba Lantos ◽  
Szandra Purgel ◽  
Katalin Ács ◽  
Bernadett Langó ◽  
Lajos Bóna ◽  
...  
Keyword(s):  
Anther Culture ◽  
Heading Date ◽  
Wheat Breeding ◽  
F1 Hybrids ◽  
Spelt Wheat ◽  
Advanced Line ◽  
Flour Yield ◽  
The Mean ◽  
Dh Lines

The efficiency of in vitro anther culture was screened in a full diallel population of four spelt wheat genotypes and ten F1 hybrids. Genotype dependency was observed based on the data of embryo-like structures (ELS), green-, albino plantlets. In the diallel population and ten F1 hybrids, the green plantlets production ranged from 13.75 to 85.00 and from 6.30 to 51.00, respectively. The anther culture-derived plants of F1 hybrids were grown up in the nursery. At the harvest, 436 spontaneous doubled haploid (DH) plants were identified among the 1535 anther culture-derived transplanted and grown up individual plants. The mean of spontaneous rediploidization was 28.4% which ranged from 9.76% to 54.24%. In two consecutive years, the agronomic values of ‘Tonkoly.pop1’ advanced line were compared with seven DH lines of ‘Tonkoly.pop1’ in the nursery. The DH lines achieved competitive values in comparison with ‘Tonkoly.pop1’ advanced line based on the 11 measured parameters (heading date, plant height, yield, hardness, width and length of seed, TKW, hulling yield, flour yield, protein and wet gluten content). These observations presage the efficient utilization of anther culture in spelt wheat breeding.

221 EFFECT OF STAGE OF CORPUS LUTEUM DEVELOPMENT ON THE IN VITRO PRODUCTION OF BOVINE EMBRYOS

2011 ◽  
Vol 23 (1) ◽  
pp. 209
Author(s):  
S. Miyashita ◽  
K. Miyata ◽  
C. Tachibana ◽  
Y. Inaba ◽  
H. Koyama ◽  
...  
Keyword(s):  
Corpus Luteum ◽  
Calf Serum ◽  
Cumulus Cells ◽  
Large Mass ◽  
Bovine Embryos ◽  
In Vitro Production ◽  
Stage Of Development ◽  
The Mean ◽  
Vitro Production

The objective of this study was to investigate the effect of stage of corpus luteum (CL) development on the in vitro production of bovine embryos. Ovaries were classified according to the expected day of the oestrous cycle based on the morphology of the ovaries. Ovaries with a corpus hemorrhagicum and the remnant of the follicular lumen filled with blood were considered the early luteal stage (Days 2 to 4; Day 0 = day of ovulation, n = 46). Ovaries with a large mass of orange tissue in the CL were classified as the midluteal stage (Days 7 to 10, n = 42). Cumulus–oocyte complexes (COC) were collected by aspiration of 2- to 6-mm follicles. The COC were classified into the following grades: COC with >3 compact layers of cumulus cells and evenly granulated cytoplasm were classified into Grade 1; COC with >3 layers cumulus cells and evenly granulated cytoplasm were classified into Grade 2; COC with partially remaining cumulus cells and abnormal cytoplasm were classified into Grade 3; COC without cumulus cells or those with expanded cumulus cells were classified into Grades 4 and 5, respectively. Grades 1 and 2 COC were in vitro matured for 20 h in TCM-199 supplemented with 5% calf serum and 0.02 mg mL–1 of FSH at 38.5°C under an atmosphere of 5% CO2 in air. Matured COC were inseminated with 5 × 106 sperm for 18 h. Presumptive zygotes were cultured in CR1aa medium supplemented with 5% calf serum at 38.5°C under an atmosphere of 5% O2, 5% CO2, and 90% N2 for 9 days (fertilization = Day 0). The mean number of COC and the proportion of COC classified as Grades 1 and 2 were analysed by ANOVA. Cleavage rates on Day 3 and blastocyst rates on Days 7 to 9 were analysed by a chi-square test. The mean number of recovered oocytes in the early luteal stage (18.7 ± 9.5) was significantly higher (P < 0.05) than the number in the midluteal stage (12.2 ± 5.7). The proportion of Grades 1 and 2 oocytes in the early luteal stage [66.7% (531/789)] was significantly higher (P < 0.01) than that in the midluteal stage [51.6% (252/484)]. The cleavage and blastocyst rates in the early luteal stage [60.9% (181/297) and 32.7% (97/297), respectively] were significantly higher (P < 0.05) than those in the midluteal stage [50.7% (76/150) and 20.7% (31/150) respectively].The present study suggests that the stage of development of the CL in bovine ovaries influences the number of recovered oocytes per ovary and the development of in vitro production of bovine embryos.

scholarly journals Kinetic analysis of in vitro production of wild-type Spodoptera frugiperda nucleopolyhedrovirus

2010 ◽  
Vol 53 (2) ◽  
pp. 285-291 ◽  
Author(s):  
Andréa Farias de Almeida ◽  
Gorete Ribeiro de Macedo ◽  
Leslie Chee Loong Chan ◽  
Márcia Regina da Silva Pedrini
Keyword(s):  
Cell Line ◽  
Spodoptera Frugiperda ◽  
Wild Type ◽  
In Vitro Production ◽  
Extracellular Virus ◽  
Cell Productivity ◽  
The Mean ◽  
Body Production ◽  
Vitro Production

In this study, the kinetic behavior of Sf9 and Sf21 cells used in the production of a baculovirus biopesticide to control the pest of corn Spodoptera frugiperda was analyzed. Kinetic variables such as maximum specific growth rate, cell productivity, mean rate of infection, as well as the mean rate of occlusion body production were determined during the infection of these cell-lines with the extracellular virus of the S. frugiperda nucleopolyhedrovirus (SfMNPV). The Sf9 cell-line resulted in better viral production results (5.0 x 10(8) OB/mL) than the Sf21 cell-line (2.5 x 10(8) OB/mL).

scholarly journals Superovulation following follicular synchronization with GnRH at random stages of the oestrous cycle in heifers: oocyte competence and in vitro embryo production

2010 ◽  
Vol 55 (No. 5) ◽  
pp. 190-194
Author(s):  
H. Kohram ◽  
V. Vahedi ◽  
A. Farahavar
Keyword(s):  
Late Phase ◽  
Oestrous Cycle ◽  
Developmental Competence ◽  
In Vitro Production ◽  
Embryo Production ◽  
Oocyte Competence ◽  
The Mean ◽  
Follicular Puncture ◽  
Vitro Production

The objective of this study was to develop a superovulatory program based on the synchronization of follicular waves with GnRH which could be applied regardless of the stage of the oestrous cycle. In this experiment, GnRH was given to 30 heifers in lactation between Days 0 and 7 (n = 13), 8 and 12 (n = 12), 13 and 16 (n = 5) of the oestrous cycle. Twenty-four heifers were used as controls and did not receive any GnRH. All follicles &ge; 6 mm were punctured 4 days after GnRH treatment in treated animals and between Days 8 and 12 of the oestrous cycle in control heifers. Two days after the follicular puncture, all heifers were superstimulated with 160 mg Folltropin-V given twice daily over 2 days. Oocytes were collected 42 h after the last FSH treatment. The oocytes were subjected to IVM/IVF and the developmental competence of embryos was compared. In vitro production of embryos was affected only by the stages of the oestrous cycle when the GnRH treatment was given and not by the GnRH treatment. No difference (P &gt; 0.1) in the mean number of oocytes, cleavage and embryo production was noted between the control animals and the animals treated with GnRH in the late phase of the oestrous cycle. The mean number of blastocysts was higher (P &lt; 0.05) in heifers treated with GnRH in the mid and the late phase of the oestrous cycle than in the early phase. In conclusion, the in vitro production of embryos was compromised in the present study with heifers following the follicular synchronization with GnRH. This procedure is advantageous for the in vitro production of bovine embryos since the spontaneous oestrus is eliminated. However, more investigations are needed to increase the competence of oocytes obtained following this procedure.

scholarly journals Genotypic features of morphogenetic reactions of varieties and hybrids F1 of winter soft wheat during various stages of androgenesis in vitro

2018 ◽  
Vol 22 ◽  
pp. 252-256 ◽  
Author(s):  
I. S. Zambriborshch ◽  
O. L. Shestopal ◽  
M. S. Boyko
Keyword(s):  
Winter Wheat ◽  
Anther Culture ◽  
Triticum Aestivum L ◽  
Soft Wheat ◽  
F1 Hybrids ◽  
Green Plants ◽  
Ability To Regenerate ◽  
Androgenesis In Vitro ◽  
Soft Winter Wheat

Aim. Testing the haploproduction ability of 47 varieties and 143 F1 hybrids of winter bread wheat. Methods. In vitro culture of isolated anthers of wheat. The percentage of callus and regeneration of green plants for each genotype calculated as a percentage of the planted anthers. Results. The differences in the frequency of сallus induction and the ability to regenerate plants in the process of androgenesiss in vitro of winter soft wheat were detected. The range of variation haploproduction activiti was broad. The sign of "the formation of сallus" for varieties was in limited from 0 to 21.2 % and for hybrids – from 0 to 38.8 %; on the sign of "regeneration of green plants" for varieties – from 0 to 9.4 %, and for hybrids from 0 to 9.1 %. The positive effect of 1BL/1RS translocation on signs of haploproduction in anther culture Triticum aestivum L. Conclusions. Genotype-specific of microspores morphogenetic reactions of soft winter wheat in the process of androgenesis in vitro were revealed. It has been found that F1 hybrids have a higher potential production potential in anther culture than varieties. During the period from 2011 to 2017, the 580 lines of winter wheat were transferred to the breeding departments. Keywords: soft winter wheat, anther culture in vitro, callus, regeneration.

scholarly journals Analysis of 138 pathogenic mutations in presenilin-1 on the in vitro production of Aβ42 and Aβ40 peptides by γ-secretase

2016 ◽  
Vol 114 (4) ◽  
pp. E476-E485 ◽  
Author(s):  
Linfeng Sun ◽  
Rui Zhou ◽  
Guanghui Yang ◽  
Yigong Shi
Keyword(s):  
Amyloid Precursor Protein ◽  
Age At Onset ◽  
Amyloid Plaques ◽  
Presenilin 1 ◽  
In Vitro Production ◽  
Amyloid Peptides ◽  
Β Amyloid ◽  
The Mean ◽  
Vitro Production

A hallmark of Alzheimer’s disease (AD) is the aggregation of β-amyloid peptides (Aβ) into amyloid plaques in patient brain. Cleavage of amyloid precursor protein (APP) by the intramembrane protease γ-secretase produces Aβ of varying lengths, of which longer peptides such as Aβ42 are thought to be more harmful. Increased ratios of longer Aβs over shorter ones, exemplified by the ratio of Aβ42 over Aβ40, may lead to formation of amyloid plaques and consequent development of AD. In this study, we analyzed 138 reported mutations in human presenilin-1 (PS1) by individually reconstituting the mutant PS1 proteins into anterior-pharynx–defective protein 1 (APH-1)aL–containing γ-secretases and examining their abilities to produce Aβ42 and Aβ40 in vitro. About 90% of these mutations lead to reduced production of Aβ42 and Aβ40. Notably, 10% of these mutations result in decreased Aβ42/Aβ40 ratios. There is no statistically significant correlation between the Aβ42/Aβ40 ratio produced by a γ-secretase variant containing a specific PS1 mutation and the mean age at onset of patients from whom the mutation was isolated.

scholarly journals Ovum Pick Up: Cows Treated With Single Doses of Follicle Stimulating Hormone

2019 ◽  
Vol 11 (10) ◽  
pp. 231 ◽  
Author(s):  
Bárbara Letícia Marchi da Silva ◽  
Paulo Roberto Adona ◽  
Samuel Guemra ◽  
Paulo Sergio Monzani ◽  
Moysés dos Santos Miranda
Keyword(s):  
Single Dose ◽  
Follicle Stimulating Hormone ◽  
Oocyte Retrieval ◽  
Ovarian Follicles ◽  
In Vitro Production ◽  
Oocyte Recovery ◽  
The Mean ◽  
Vitro Production ◽  
Stimulating Hormone

Cows treated with single doses of follicle stimulating hormone (FSH) and ovum pick up (OPU) after 24 hours were evaluated for oocyte recovery, in vitro production of embryos (IVPE), and transferred embryos. To begin evaluations, the ovarian follicles larger than three millimeters in diameters were removed from all cows used in the study. Two days after OPU, 200 milligrams of FSH was given in a single dose in 6 cows (treated). Twenty-four hours after application of FSH, the cows underwent a new OPU session for oocyte retrieval. These procedures were repeated three consecutive times without interval. In control (FSH-free) cows the OPU were performed at intervals of one week or oocyte retrieval. The viable oocytes were submitted to IVPE, and the blastocysts were transferred to the recipients. The mean number of oocytes did not differ (p &gt; 0.05) between control cows (12.1&plusmn;2.8) and those treated (10.9&plusmn;1.6). There were also no differences (p &gt; 0.05) in the number (6.6&plusmn;1.7 and 7.1&plusmn;0.9, respectively) or in the percentage (54.4&plusmn;3.3 and 64.5&plusmn;3.1%, respectively) of viable oocytes between control cows and those treated. The percentage of IVPE and pregnancy did not differ (p &gt; 0.05) between control cows (39.8&plusmn;2.6% and 44.7&plusmn;4.8%) and those treated (37.8&plusmn;2.5% and 39.5&plusmn;4.1%), respectively. The treatment with single doses of FSH did not significantly alter the evaluated results for oocyte recovery, IVPE and transferred embryos, and, therefore, did not promote significant improvements for the IVPE as a whole.

scholarly journals High production of wheat double haploids via anther culture

Genetika ◽  
2007 ◽  
Vol 39 (3) ◽  
pp. 405-411
Author(s):  
Ankica Kondic-Sipka ◽  
Boris Kobiljski ◽  
Nikola Hristov
Keyword(s):  
Anther Culture ◽  
Triticum Aestivum L ◽  
Green Plant ◽  
F1 Hybrids ◽  
Regeneration Ability ◽  
Breeding Programs ◽  
High Production ◽  
Dh Lines ◽  
Wheat Lines

Androgenous and regeneration abilities of 14 randomly selected F1 hybrids of wheat (Triticum aestivum L.) were analyzed. Anthers were grown in vitro on a modified Potato-2 inductive medium. The hybrid NS111-95/Ana had the highest average values for androgenous capacity (33%) and callus yield (119%), while the hybrid NS 92-250/Tiha had the lowest values for these traits (9 and 21%, respectively). Seven genotypes (50%) had a frequency of green plants relative to the number of isolated anthers of over 10%, with the highest frequency of 21.3% (NS111-95/Sremica). This hybrid produced 12.8 doubled haploid (DH) lines per spike used for isolation. In the other genotypes, the number of produced DH lines per spike ranged from 1 (30?Sc.Smoc.88-89/Hays-2) to 11.2 (NS111-95/Ana). As half of the randomly selected genotypes exhibited high green plant regeneration ability and a high production of DH lines per spike, it can be concluded that in vitro anther culture can be successfully used in breeding programs for rapid production of homozygous wheat lines.

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