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Wyszukujesz frazę "hybrid breeding" wg kryterium: Temat


Tytuł:
Jakość mięsa jagniąt-tryczków typu corriedale w porównaniu z ich mieszańcami F1 po trykach ras plennych
Kachestvo mjasa baranchikov tipa korridel v sravnenii s ikh pomesjami ot baranov plodovitykh porod
Meat quality of corriedale ram-lambs as compared to their crosses with rams of fertile breeds
Autorzy:
Niznikowski, R.
Janikowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/799617.pdf
Data publikacji:
1988
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
hodowla zwierzat
owce
owca corriedale
mieszance F1
wartosc poubojowa
tryki
jagnieta
mieso owcze
jakosc
ocena jakosci
rasy zwierzat
plennosc
tucz zwierzat
animal breeding
sheep
Corriedale breed
cross hybrid
ram
lamb
sheep meat
meat quality
quality assessment
fertile line
animal breed
Opis:
Соответствующие исследования проводились в сельскохозяйственной опытной станции Пучнев на материале 45 баранчиков. Тридцать ягнят происходило от товарного скрещивания овец корридель с баранами финской и фризской породы (обе опытные группы насчитывали по 15 голов), сравниваемых с отечественными корриделями. Животных откармливали до веса тела 40 кг, а затем их убивали и оценивали тканевый состав тушек путем диссекции окорока, а также определяли питательные достои - ства мяса. Самое высокое содержание мяса установлено в окороках баранчиков как типа корридель так и их помесей с фризскими овцематками. Самое малое ожирение мяса было у помесей корриделя с финской молочной овцой. Не наблюдались существенные различия в физических признаках мяса (pH, окраска, водопоглотимость). Содержание сухого вещества и общего дира было самым высоким в мясе помесей корриделя с финской овцой. Относительно общего белка не обнаружено статистически существенных различий.
The respective investigations were carried out at the Agricultural Experiment Station Puczniew on 45 ram-lambs. Thirty lambs originated from commercial crossing of Corriedale sheep with East-Friesian and Finnish rams and 15 lambs constituted Corriedale sheep. All animals were fattened to the liveweight of 40 kg,, then slaughtered and the hind leg was dissected to determine the tissue composition of the carcass. Thereupon the quality of meat was estimated. The highest content of lean meat in the hind leg of lamb was found in the Corriedale ram-lambs and in those originating from F₁ crosses with the East-Friesian sheep. The lowest fat content was found in lambs of the crosses of Corriedale ewes with East-Friesian rams. No significant differences in the physical traits of meat of particular experimental groups has been proved. The content of dry matter and crude fat was the highest in the lean meat of crosses of Corriedale ewes with Finnish rams. No significant differences have been foud, either, in the crude protein content in the lean meat.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1988, 352
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Masa ciała i wartość rzeźna jagniąt z dwóch mięsnych linii owiec
Ves tela i ubojnoe kachestvo jagnjat ovec mjasnogo tipa
Body weight and slaughter value of lambs of the meat-type sheep
Autorzy:
Sliwa, Z.
Slosarz, P.
Powiązania:
https://bibliotekanauki.pl/articles/798688.pdf
Data publikacji:
1988
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
hodowla zwierzat
genetyka zwierzat
linie hodowlane
krzyzowanie zwierzat
linie miesne
wzrost zwierzat
maciorki
tryczki
owce
wydajnosc rzezna
mieszance
animal breeding
animal genetics
body weight
slaughter value
lamb
sheep
meat-type sheep
hybrid
animal growth
meat breed
breeding line
Opis:
Соответствующие исследования касались роста ягнят ярочек и баранчиков третьего поколения синтетически выводимых мясных линий овец. В обеих линиях генетическое участие показывали польские мериносы, велькопольская овца и восточно-фризская овца, а сверх того в группе А овцы трех мясных пород: Берришон дю Шер, Иль де Франс и Тексель (белоголовая линия), а в группе Б овцы породы Суффольк (черноголовая линия). Ягнята обеих линий характеризовались в сравнении с польским мериносом на 12% высшими привесами тела в период от рождения до возраста 28 дней. Помеси от черноголовой линии (75% генетического участия породы Суффольк) отличались высокими привесами, особенно в период 28-100 дней (около 300 г в сутки). Тушки ягнят-помесей от обеих линий более мясистые и меньше ожиренные, чем тушки мериносовых ягнят.
The respective investigations concerned the growth of ewe- and ram-lambs originating from the third generation of synthetically bred meat-type lines of sheep. In both lines the genetic share showed Polish Merino sheep, Wielkopolska sheep and East-Friesian sheep and moreover in the A group - the sheep of three meat-type lines: Berrichon du Cher, Ile de France and Texel ("white-head" line) and in the В group - the sheep of Suffolk breed ("black-head" line). Lambs from the both lines showed, as compared to the Polish Merino sheep,the body weight gains by 12% higher in the period from birth to the age of 25 days. The crosses from the "black-head" line (75% of share of the Suffolk breed) distinguished themselves with higher body weight gains, particularly in the period from 28 to 100 days (about 30 g a day). The carcasses of lambs-crosses in both lines were more meaty and less fatty than those of Merino lambs.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1988, 352
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wstępna ocena wzrostu i wskaźników użytkowości wełnistej maciorek rasy czarnogłówka, owcy kamienieckiej i ich mieszańców, pochodzących od przystępek pokrytych w wieku 10 miesięcy
Produktivnost' vostochno-frizsrikh ovcematok i ikh potomstva F1 posle pol'skogo merinosa i vel'skopol'skoj ovcy
Productivity of East-Friesian ewes and of the F1 progeny after the Polish Merino ram and Wielkopolska ewe
Autorzy:
Wojtowski, J.
Gut, A.
Powiązania:
https://bibliotekanauki.pl/articles/803911.pdf
Data publikacji:
1988
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
hodowla zwierzat
genetyka zwierzat
owce
owca czarnoglowka
owca kamieniecka
mieszance
rasy zwierzat
uzytkowosc welnista
maciorki
wzrost zwierzat
zywienie zwierzat
animal breeding
animal breed
animal genetics
animal productivity
sheep
East-Friesian breed
ewe
F1 population
progeny
Polish Merino breed
ram
Wielkopolska breed
hybrid
animal growth
wooliness
Opis:
От ярок покрытых в 10-месячном возрасте были получены ягнята овечки оцениваемые в четырех группах: I - каменецкая овца (длинношерстная) , II - помеси каменецкой овцы с баранами черноголовой породы, III - помеси Черноголовки с баранами каменецкой овцы, IУ -черноголовая пррода. Розницы в весе тела в 3- и 6-месячном возрасте не были существенными. Однако наиболее тяжелыми были овцематки группы II (22,40 и 37,40 кг). Подобно не установлено существенных разниц в оцениваемых показателях шерсти, за исключением длины шерсти. В длине шерсти помеси групп III и II показывали более высокие значения, чем животные группы 1У и лишь незначительно низшие значения, чем животные группы I. Самой высокой продуктивностью в ягневой стрижке в 8-месячном отроете отличались ягнята группы I (3,20 кг), а посредственной - ягнята групп II и III. В оценке толщины шерсти (группа IУ 29,77, а группа II 34,27 мм) и в разрывной длины шерсти (группа II 5,68, а группа III 6,97 км) не установлено существенных статистических различий.
Gimmers obtained from primapara ewes covered at the 10-month age were estimatec in four groups: I - Kamieniecka (long-wooled) sheep, II - crosses of Kamieniecka ewes and "black-head" rams, III - crosses of "black-head" ewes and Kamieniecka rams, IV - "black-head" sheep. Body weight differences at the age of 3 and 6 months were insignificant, still the heaviest proved to be ewes of the group II (22.40 and 37.40 kg). Similarly no significant differences in the estimated wool indices, except for wool grading, were found. In the wool grading the crosses from the group III and II showed higher values than those of the group IV and only slightly than those of the group I. The highest lamb shearing productivity in the 8-month regrowth were obtained in the group I (3.20 kg) and medium ones in the groups II and III. In estimation of the wool thickness (group IV 29.77 and group П 34.20 pm and in the breaking lenth of bunches (group II 5.68, group III 6.97 km) no statistical differences were found.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1988, 352
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Amphidiploid hybrids of Trifolium pratense L. [2n=14 and 2] with T.diffusum Ehrh. [2n=16]
Autorzy:
Strzyzewska, C
Powiązania:
https://bibliotekanauki.pl/articles/2048137.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chromosome
Trifolium diffusum
Trifolium pratense
hybrid
interspecific hybrid
plant breeding
genetic variation
Opis:
After duplicating the chromosome number by colchicine in sterile F₁ 16-chromosome hybrid T. pratense × T. diffusum some partially fertile plants with 32 chromosomes were found. Male fertility (viability of pollen grain) was from 69.3% to 86.2% (on average 81.8%), whereas female fertility estimated as seed setting after cross- and self-pollination was 21.8% and 6.9%, respectively. Male and female fertility as well as somatic chromosome number were examined in the F₂-F₄ generations. Selection for female fertility resulted in increasing seed setting in the first two generations (F₂ and F₃) and in decreasing it in F₄ generation. An average seed setting in the F₂-F₄ generations after cross-pollination amounted to 22.2%, 43.6% and 12.9%, respectively; after self-pollination it was 25.2%, 27.6% and 1.9%. In the F₂ generation all the plants had 2n=32 chromosomes. In the next generations there appeared aneuploids, among which 30-chromosome individuals were predominant.
Źródło:
Journal of Applied Genetics; 1995, 36, 2; 147-154
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applications of recent advances at the Institute of Grassland and Environmental Research in cytogenetics of the Lolium-Festuca complex
Autorzy:
Humphreys, M W
Thomas, H M
King, I P
Morgan, W G
Meredith, M R
Harper, J A
Humphreys, M O
Bettany, A J E
Dalton, S J
James, A R
Ougham, H J
Thomas, H
Powiązania:
https://bibliotekanauki.pl/articles/2046675.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
RNA
in situ
tissue culture
gene transfer
chromosome segment
anther culture
androgenesis
plant breeding
introgression mapping
fluorescence
hybridization
Lolium-Festuca complex
drought resistance
gene isolation
tetraploid hybrid
DNA
meiosis
grass
chromosome behaviour
Opis:
Recent advances at Institute of Grassland and Environmental Research (Aberystwyth, U.K.) in cytogenetics of the Lolium/Festuca complex places us in the advantageous position of being able to map genes of agronomic importance onto chromosome arms using fluorescence in situ hybridization (FISH). The ability to physically map genes leads to the capability for "dissecting" quantitative traits into their different components and will lead to better understanding of the complex physiological processes involved and the identification of their genetic control. By tagging genes of interest, using molecular and morphological markers, it will be possible to select and combine suites of desirable genes in a single genotype and thus produce novel cultivars by conventional breeding procedures. Programmes for introgression depend on the relationships between species and on levels of chromosome pairing. Phylogenetic relationships within the Lolium/Festuca complex are being determined using both genomic in situ hybridization (GISH) and FISH. With recent advances in genetic manipulation within the Lolium/Festuca complex, opportunities now arise for gene transfer from Lolium and Festuca species into other important agricultural crops.
Źródło:
Journal of Applied Genetics; 1997, 38, 3; 273-284
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic analysis of selected tomato [Lycopersicon esculentum Mill.] traits in crosses between cultivated lines and the nor mutant
Autorzy:
Seroczynska, A
Niemirowicz-Szczytt, K.
Powiązania:
https://bibliotekanauki.pl/articles/2044241.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
inheritance
shelf life
polygalacturonase gene
Lycopersicon esculentum
nor gene
mutant
heterozygote
tomato breeding
yield
hybrid
ripening
cross
earliness
genetic analysis
fruit weight
Opis:
The aim of the study was to investigate the delayed ripening caused by the nor gene and its possible interaction with selected traits observed in two combinations, namely, Dw₄ x nor and C36 x nor. The lines Dw₄ and C36 differed from each other in the majority of examined characters. There was no significant effect of reciprocal crosses on these characters (total yield, number of fruits, fruit weight, locule number, earliness and fruit shelf life). In Dw₄ x nor fruit weight was inherited with incomplete dominance of small fruit, while in C36 x nor the inheritance proved to be intermediate. This important statement made it possible to distinguish the hybrids characterised by fruit weight intermediate in relation to the parental forms. The experiments attested to the high significance of additive effects for fruit weight, periods from sowing to ripening and from flowering to ripening in both combinations and for locule number in Dw₄ x nor. It was also found that the nor gene slightly delayed the onset of fruit ripening but did not affect such traits as total yield, number and weight of fruits, locule number and period from sowing to flowering. In its homozygous state the nor gene totally inhibited fruit ripening. However, as a heterozygote it revealed an intermediate action, slowing down fruit ripening and prolonging shelf life 2-3 times as compared with standard tomato. The expression of the nor gene was also found to be dependent on the genetic background. Line C36 positively influenced the flavour and firmness of hybrid fruits, while Dw₄ had a negative effect on fruit quality.
Źródło:
Journal of Applied Genetics; 1998, 39, 3; 259-273
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plant height and yield components of inbred isogenic and F1 hybrid Rht dwarf wheats
Autorzy:
Flintham, J E
Gale, M.D.
Powiązania:
https://bibliotekanauki.pl/articles/2044459.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chemical hybridizing agent
F1 hybrid
wheat
plant height
grain yield
hybrid genotype
heterosis
alpha-amylase
enzyme activity
breeding programme
yield component
Rht allele
Opis:
Single and double-gene Rhtl, Rht2, Rht3, Rht1 + Rht2 and Rht3 + Rht2 isogenic lines of wheat in four parental rht varieties were grown in drilled yield trials at four sites in 1989. The same lines were also grown in 1988 together with hybrid genotypes from CHA (chemical hybridising agent) F₁ production plots. In the inbred lines shorter than one metre, Rht alleles reduced total shoot biomass by shortening the straw; mass of straw per unit plant height was unaffected. Highest grain yield was obtained from plant heights between 70 and 100 cm. The Rht genotype achieving this stature varied according to parent varietal height. The hybrids grown allowed comparisons between intra- and inter-varietal crosses over a range of Rht genotypes. In F₁ hybrids positive heterosis was observed for plant height, grain yield and mean grain weight. Highest yields were obtained from inter-varietal hybrids carrying one, two or three doses of Rht1 or Rht2 or one dose of Rht3. An Rht3lrht hybrid showed resistance to premature α-amylase production during grain ripening.
Źródło:
Journal of Applied Genetics; 1998, 39, 1; 73-83
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chromosomes of Lupinus hispanicus subsp. hispanicus Boiss. et Reut., L.luteus L. and their hybrids
Autorzy:
Naganowska, B
Ladon, D.
Powiązania:
https://bibliotekanauki.pl/articles/2043412.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chromosome morphology
Lupinus luteus
hybridization
chromosome number
cytological analysis
hybrid
Lupinus x hispanicoluteus
breeding programme
meiosis
Lupinus hispanicus
Źródło:
Journal of Applied Genetics; 2000, 41, 3; 167-170
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic diversity of inbred rye lines evaluated by RAPD analysis
Autorzy:
Myskow, B
Masojc, P.
Banek-Tabor, A.
Szolkowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/2041926.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
random amplified polymorphic DNA
rye line
rye
Secale cereale
fingerprinting
hybrid rye
hybrid cultivar
genetic information
genetic similarity
plant breeding
Źródło:
Journal of Applied Genetics; 2001, 42, 1; 1-14
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Combining ability for selected characters in winter rye.
Autorzy:
Kolasińska, Irena
Węgrzyn, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/2198883.pdf
Data publikacji:
2003-06-22
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
winter rye
Secale cereale L.
hybrid breeding
male sterility
restorers
combining ability
additive and nonadditive gene effects
Opis:
General (GCA) and specific (SCA) combining abilities for four agronomic characters were determined in two experiments. The first included 24 F1 hybrids produced by crossing 6 restorers (R) to four CMS single crosses (CMS-SC). The second experiment included 20 F1 hybrids derived by crossing ten restorers to two CMS single crosses. The following characters were assessed: grain yield, heading date, plant height and lodging. Analysis of the combining ability was carried out according to the factorial mating design (North Carolina II Design) with the WAKOMBK (TP) computer software. General combining ability of both males and females was significant for all the characters in the experiment 1. In the second experiment GCA of females proved to be significant for all the characters, but GCA of males was significant only for plant height. Significant specific combining ability was detected only for the heading date in the first experiment and for all the characters except for plant height in the second one. Additive gene effects seems to be more important than nonadditive gene effects in controlling all the characters under study. The restorers and CMS single crosses with significant and favourable GCA effects were selected for further stages of hybrid breeding programme.
Źródło:
Plant Breeding and Seed Science; 2003, 47; 39-45
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Combining ability vs. population performance of genetic resources in rye
Autorzy:
Roux, S. R.
Miedaner, T.
Geiger, H. H.
Knopf, E.
Wilde, P.
Wortmann, H.
Powiązania:
https://bibliotekanauki.pl/articles/2198911.pdf
Data publikacji:
2003-12-21
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
combining ability
genetic resources
hybrid rye breeding programme
Opis:
The comparison of the population per se performance and the combining ability of 19 genetic resources and 5 adapted populations demonstrated that genetic resources might be integrated in hybrid rye breeding programmes without previous selection for yield. However, highly heritable traits like straw length and susceptibility to lodging should be improved before.
Źródło:
Plant Breeding and Seed Science; 2003, 48; 45-47
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetics of deoxynivalenol (DON) contamination caused by Fusarium head blight in hybrid rye.
Autorzy:
Miedaner, T.
Wortmann, H.
Geiger, H. H.
Powiązania:
https://bibliotekanauki.pl/articles/2198905.pdf
Data publikacji:
2003-12-21
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
Fusarium culmorum
hybrid breeding
mycotoxins
population parameters
Secale cereale
Opis:
Head blight caused by Fusarium culmorum or F. graminearum affects all cereals including winter rye (Secale cereale L.). Besides yield and quality losses, grain is contaminated with the mycotoxin deoxynivalenol (DON) that is harmful to animals and humans. We analysed 76 self-fertile S2 lines and their corresponding testcrosses for head blight resistance and DON concentration in the grain by inoculating them with an aggressive isolate of F. culmorum at two locations in Southwestern Germany in 2000. Disease severity at both locations was low with mean ratings from 2.7 to 3.4 on a 1-9 scale (1=healthy), but still DON occurred in considerable amounts (11.4 - 15.0 mg kg-1). Genotypic variance was significant (P=0.01) in all instances, genotype-location interaction and error variances were more important for DON concentration resulting in a lower heritability of this trait. No association between S2 lines and their testcrosses was found for head blight rating or DON concentration (r = 0.33 and 0.19, respectively). The coefficient of correlation between head blight rating and DON concentration was low for the S2 lines and medium for the testcrosses (r=0.24 and 0.60, P=0.05 and P=0.01, resp.). The hybrid rye breeder should select predominantly on testcross performance. Selection for low head blight ratings should result in lower DON concentrations in the grain also. In later generations, DON should be analysed additionally to exploit the maximum selection gain possible.
Źródło:
Plant Breeding and Seed Science; 2003, 48; 69-78
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of quantitative-genetic and economic parameters on the efficiency of CMS-line development in rye.
Autorzy:
Tomerius, A.-M.
Geiger, H. H.
Powiązania:
https://bibliotekanauki.pl/articles/2198899.pdf
Data publikacji:
2003-06-22
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
hybrid rye breeding
line development
model calculations
optimization
Opis:
Model calculations were conducted to optimize and compare alternative schemes of CMS-line development in hybrid rye breeding on the basis of their expected selection gain per year assuming a fixed annual budget. Selection gains are predicted using current estimates of the relevant quantitative-genetic and economic parameters. Two alternative schemes are dealt with here. The first scheme (STD) represents a standard procedure in present-day second-cycle breeding. The second scheme (POP) is especially suited for population material that has not undergone intense inbreeding and selection yet. We:(i) give the optimum dimensioning of the schemes and their relative efficiency, (ii) study the effect of alterations in the dominance variance, the genotype × environment-interaction variance, and the budget, and (iii) assess how deviations from the optimum dimensioning affect the selection gain.Assuming identical genotypic variances, scheme STD is clearly superior to POP. It should thus always be used for second-cycle material. If, however, the population material used with scheme POP offers larger genotypic variances than the second-cycle material, POP becomes competitive. Changes in genetic and economic parameters affect the dimensioning but not the ranking of the schemes. Deviations from the optimum dimensioning only slightly reduce the selection gain as long as they are not too severe. This is shown for suboptimum numbers of testers and locations. All in all, the results demonstrate the importance of optimizing breeding schemes with respect to genetic, technical, and economic aspects.
Źródło:
Plant Breeding and Seed Science; 2003, 47; 77-87
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Male fertility restoration of rye crosses in the pampa cytoplasm.
Autorzy:
Kolasiñska, Irena
Powiązania:
https://bibliotekanauki.pl/articles/2198892.pdf
Data publikacji:
2003-06-22
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
hybrid breeding
male sterility
restoration of male fertility
winter rye
Opis:
Male fertility restoration of F1 crosses between male sterile lines (P lines) and restorers (R) was studied in 2000. Pollen fertility of 50 F1 crosses derived by crossing 10 P lines to 5 restorers was estimated. The degree of male sterility/fertility was assessed by visual anther score of single plants on a 1-9 scale, restorer indices and visual pollen shedding scores of plots on a 1-9 scale. @Abstract = Coefficients of correlation between the above fertility traits were calculated. The analysis of variance showed that the degree of male fertility of F1 crosses strongly depends on a restorer genotype, a P line genotype as well as on the P ´ R interaction. The restorer and P line genotypes were a major source of variation.A considerable range of pollen fertility was evident in the single crosses. The mean restorer index of F1 crosses ranged from 3,4 to 98,7%. The P lines under study were divided into three groups on the basis of mean restorer indices of their crosses with five restorers: easy, medium and difficult to restore. All the restorers tested, provide a sufficient restoration of male fertility of the F1 crosses with majority of the P lines. The new restorer, 330 R appeared to be more effective in restoration of pollen fertility than the other currently used lines
Źródło:
Plant Breeding and Seed Science; 2003, 47; 33-37
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Qualitative characteristics of rye inbred lines
Autorzy:
Kolasińska, Irena
Boros, Danuta
Powiązania:
https://bibliotekanauki.pl/articles/2198923.pdf
Data publikacji:
2003-12-21
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
extract viscosity
falling number
pentosans
hybrid breeding
Secale cereale L.
winter rye
Opis:
Qualitative characteristics (kernel and volume weights, the contents of protein, lysine and pentosan, extract viscosity and falling number) of inbred lines created in hybrid breeding program of rye was evaluated in two consecutive years, 1998 (no 135) and 1999 (no 78). Two groups of rye inbred lines were selected, which present opposite physicochemical properties and thus fulfilling requirements either for bread making or animal feeding. Some lines might be directly utilised as components of experimental hybrids or as donors of qualitative traits for the development of the second cycle inbred lines.
Źródło:
Plant Breeding and Seed Science; 2003, 48; 127-131
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł

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