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Wyszukujesz frazę "hybrid rye" wg kryterium: Temat


Wyświetlanie 1-8 z 8
Tytuł:
Rye production and breeding in Poland.
Autorzy:
Arseniuk, Edward
Oleksiak, Tadeusz
Powiązania:
https://bibliotekanauki.pl/articles/2198885.pdf
Data publikacji:
2003-06-22
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
breeding of rye
cultivation of rye
hybrid rye
Opis:
Rye (Secale cereale L.) originates from Asia Minor, where it has been grown for food and feed since the time of Roman Empire. In the 5th century B.C. rye was brought to Poland. Comparativelylow environmental requirements, high uptake potential of macro- and micronutritients from a poor soil, tolerance to acid pH, low temperatures and frost resistance contributed to widespread cultivation of rye in Poland since ever. Over the centuries rye has become a staple crop in the country. In XVI and XVII centuries , in addition to human and animal feeding rye was extensively produced for export. Before the Second World War rye constituted 60% of grain production of all small grain cereal species in Poland. Rye made bread was at high demand and constituted 85% of all consummed one. Up to present rye is used for human consumption, animal feeding and alcohol production.In 1950s rye was grown on 5 mln ha and constituted 53% of all cereal grown in the country. Since that time the acreage of rye grown in Poland has been dropping steadily down. It is antici pated that when Poland will join the European Union the rye acreage will drop further down to 1.6-1.3 mln ha and remaining land will be forested or laid fallow. Rye improvement by breeding in Poland has a long tradition. So far, over 80 cultivars were under production. Cultivars with an epithet 'Dañkowskie' are known for about a century. Up to 1995 solely population rye cultivars in Poland was released. Poznañ Plant Breeding Co. Ltd., Danko Plant Breeding Co. Ltd and IHAR/Smolice Plant Breeding Co. Ltd. arre the main breediders and competitors over the last half of a century. In 2000 twenty one rye cultivars were officiallyregistrated in poland. The first hybrid rye cultivar was registrated in Poland by german breeders in 1995 under the name Marder. Afterwards, other hybrid cultivars have been appearing on Polish market - Esprit (1996), Nawid (1998), Luco (1999), Klawo and Ursus (2000).
Źródło:
Plant Breeding and Seed Science; 2003, 47; 7-16
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prospects and problems of hybrid rye breeding in Belarus.
Autorzy:
Hardzei, Stanislau
Urban, Ehroma
Powiązania:
https://bibliotekanauki.pl/articles/2198887.pdf
Data publikacji:
2021-08-22
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
breeding
diploid cultivars
gentypes
hybrid rye
tetraploid cultivars
Opis:
Polish F1 rye hybrids were tested in the field trials under Belarussian climatic conditions and compared to local varieties used as standards. Five-year investigations proofed that in spite of harder Belorussian winter conditions in comparison to these ones in Poland, winter-hardiness of hybrids was at the same level as of the population local standards. All hybrids were characterized by higher lodging resistance compared to standards, mainly due to lower plants height. One of the main problems which have to be solved is to find a reliable restorer. Use of population cultivars as pollinators so far was not resulted in a development of high-yielding hybrids. It is known that for P-CMS the genes of fertility restoration are scarce.
Źródło:
Plant Breeding and Seed Science; 2003, 47; 29-31
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:
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:
Analysis of xenia in F1 seeds of yellow-grain winter-rye lines.
Autorzy:
Kaczmarek, J.
Bujak, H.
Kadłubiec, W.
Grochowski, L.
Galek, R.
Powiązania:
https://bibliotekanauki.pl/articles/2198801.pdf
Data publikacji:
2001-12-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
rye
quantitative xenia
heterosis hybrid
open pollination
Opis:
The object of research were F1 hybrid grains of winter rye resulting from the topcross of 90 yellow-seed inbred lines with the green-seed tester SMH-108. The degree of crossing ability and the effect of xenia on 1000-grain weight were confirmed. In the present investigation quantitative xenia was analysed with regard to the green colour of grain. In the collection of 90 inbred lines of yellow grain differences in% of crossing were ascertained and in 26.7% of the analysed lines a significant quantitative xenia (1000-grain weight) was found. Among the 90 lines as much as 28.9% gave, in conditions of open pollination, from 66 to 85% of hybrid grain. Four lines were selected, which gave a quantitative xenia in 38, 25, 20 and 12% and crossing of 57, 84, 58 and 74%. These lines may be of practical use in producing heterosis hybrids.
Źródło:
Plant Breeding and Seed Science; 2001, 45, 2; 3-10
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
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
    Wyświetlanie 1-8 z 8

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