Log in

Relevant bibliographies by topics / Amphidiploid / Journal articles

To see the other types of publications on this topic, follow the link: Amphidiploid.

Journal articles on the topic 'Amphidiploid'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Amphidiploid.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

P, VINDHYAVARMAN. "Utilization of synthetic amphidiploids in resistance breeding of groundnut." Madras Agricultural Journal 89, December (2002): 678–82. http://dx.doi.org/10.29321/maj.10.a00286.

Full text

Abstract:

Eight diploid wild species of groundnut were hybridized to produce eight amphidiploids. Both the parental diploid species and synthetic amphidiploids were screened for foliar diseases viz. early leaf spot and rust, besides for sucking pests viz. thrips and leaf hopper. All the diploid species had high level of resistance for rust disease. Arachis cardenasii registered high level of resistance for both leaf hopper. Those desirable attributes were combined in the amphidiplods. The pollen fertility ranged from 19.0 to 67.4 per cent in the seven amphidiploid involving both 'A' genome species. Wher

APA, Harvard, Vancouver, ISO, and other styles

2

Hossain, M. M., H. Inden, and T. Asahira. "Pollen Morphology of Interspecific Hybrids of Brassica oleracea and B. campestris." HortScience 25, no. 1 (1990): 109–11. http://dx.doi.org/10.21273/hortsci.25.1.109.

Full text

Abstract:

Pollen morphology was examined in amphidiploid and amphidaploid interspecific hybrids between Brassica oleracea L. and B. campestris L. Pollen of the amphidiploid interspecific hybrids between B. oleracea var. capitata and B. campestris var. pekinensis, and between B. campestris var. chinensis and B. oleracea var. capitata, were significantly longer and wider than those of their diploid parents, presumably due to the phenotypic expression of the hybrid genomes and ploidy effects. The exine ridges and pores of the amphidiploids were well-developed and significantly larger than those of their di

APA, Harvard, Vancouver, ISO, and other styles

3

McConnell, James, and H. Kamemoto. "Morphology and Meiotic Behavior of Three Dendrobium Amphidiploids and Their Diploid Counterparts." HortScience 28, no. 9 (1993): 935–37. http://dx.doi.org/10.21273/hortsci.28.9.935.

Full text

Abstract:

Floral characteristics, meiotic behavior, and sporad formation were compared in three Dendrobium tetraploids (amphidiploids) and their diploid counterparts. Amphidiploid flowers were larger than those of diploids. Diploid meiotic behavior varied; mean configurations at Metaphase I ranged from 14.3 bivalents and 9.4 univalents to 18.9 bivalents and 0.2 univalents. In amphidiploids, nearly all cells had 38 bivalents. Sporad formation also varied; diploids had 36% to 70% tetrads and amphidiploids had 97% to 100% tetrads. Preferential pairing and small chromosome size may promote bivalent formatio

APA, Harvard, Vancouver, ISO, and other styles

4

Zhang, Xiao-Xiao, Ying Zhang, Xiao-Tong Cui, et al. "In vitro amphidiploid induction of a distant hybrid Populus simonii × P. euphratica cv. ‘Xiaohuyang-2’ and its effect on plant morphology and anatomy." Silvae Genetica 71, no. 1 (2022): 107–15. http://dx.doi.org/10.2478/sg-2022-0013.

Full text

Abstract:

Abstract Highly gametic sterility of a distant hybrid Populus simonii × P. euphratica cv. ‘Xiaohuyang-2’ restricts its utilization in breeding programs of Populus. Amphidiploid induction by somatic chromosome doubling is expected to restore its gametic fertility. In this study, nodal-segment and leaf explants of ‘Xiaohuyang-2’ were used to induce chromosome doubling with colchicine in vitro. Although chromosome doubling of the nodal-segment explants only produced mixoploids, the treatments of leaf explants on adventitious bud regeneration medium successfully produced 4 amphidiploids, which mig

APA, Harvard, Vancouver, ISO, and other styles

5

Attia, T., and G. Röbbelen. "Meiotic pairing in haploids and amphidiploids of spontaneous versus synthetic origin in rape, Brassica napus L." Canadian Journal of Genetics and Cytology 28, no. 3 (1986): 330–34. http://dx.doi.org/10.1139/g86-049.

Full text

Abstract:

Newly resynthesized AC amphihaploids, which were characterized by high meiotic pairing and multivalent formulation, after doubling of their chromosome number showed preferential pairing and bivalent formation in the resynthesized amphidiploid Brassica napus (AACC). However, univalents as well as multivalents were also formed indicating that their chromosome behaviour was not fully diploidized. Stabilization of chromosome pairing in newly resynthesized amphidiploids can be achieved through genetic control or structural modification of the homoeologous chromosomes. A comparison of the meiotic be

APA, Harvard, Vancouver, ISO, and other styles

6

McCollum, Gilbert D. "Amphidiploid Onion Germplasm f-c 8407 and f-c 8432." HortScience 23, no. 5 (1988): 918–19. http://dx.doi.org/10.21273/hortsci.23.5.918.

Full text

Abstract:

Abstract The seedling vigor of the amphidiploid (2n = 4x = 32) green bunching onion, ‘Beltsville Bunching’, surpasses that of its constituent species, Allium cepa L. (common bulb onion, 2n = 16) and A. fistulosum L. (Japanese bunching or Welsh onion, 2n = 16). Released in 1950, ‘Beltsville Bunching’ was developed by Henry A. Jones from a natural amphidiploid discovered in a population of F1 hybrids between A. cepa ‘White Portugal’ inbred 3-203-113-5 and A. fistulosum “Nebuka type” (1, 3). ‘Beltsville Bunching’ is not widely grown, which may be attributed to poor seed productivity. The original

APA, Harvard, Vancouver, ISO, and other styles

7

Ma, Yan, David H. Byrne, and Katrina G. Porter. "Cytological and Morphological Characterization of Amphidiploids for Rose Breeding." HortScience 31, no. 4 (1996): 627a—627. http://dx.doi.org/10.21273/hortsci.31.4.627a.

Full text

Abstract:

Several colchicine-induced amphidiploids of blackspot-resistant, wild diploid rose species were produced for interbreeding with tetraploid garden roses. Shoot-tip chromosome counts confirmed that 86-7 (Rosa wichuraiana Crep. × R. rugosa rubra Hort.) and 86-3 (R. laevigata Michx. × R. banksiae Aiton) are amphidiploids (2n = 4x = 28), and that 84-1000 (R. roxburghii Tratt. × R. laevigata Michx.) is a mixoploid with diploid (2n = 2x = 14) and hypotetraploid (2n = 4x-1 = 27) sectors. The measured volume of pollen grains and guard cells was higher in the tetraploids. Pollen stainability was higher

APA, Harvard, Vancouver, ISO, and other styles

8

Nehe, Ajit, Julie King, Ian P. King, Erik H. Murchie, and M. John Foulkes. "Identifying variation for N-use efficiency and associated traits in amphidiploids derived from hybrids of bread wheat and the genera Aegilops, Secale, Thinopyrum and Triticum." PLOS ONE 17, no. 4 (2022): e0266924. http://dx.doi.org/10.1371/journal.pone.0266924.

Full text

Abstract:

Future genetic progress in wheat grain yield will depend on increasing biomass and this must be achieved without commensurate increases in nitrogen (N) fertilizer inputs to minimize environmental impacts. In recent decades there has been a loss of genetic diversity in wheat through plant breeding. However, new genetic diversity can be created by incorporating genes into bread wheat from wild wheat relatives. Our objectives were to investigate amphidiploids derived from hybrids of bread wheat (Triticum aestivum L.) and related species from the genera Aegilops, Secale, Thinopyrum and Triticum fo

APA, Harvard, Vancouver, ISO, and other styles

9

Su, Yarui, Dale Zhang, Yuge Li, and Suoping Li. "Nonhomologous Chromosome Pairing in Aegilops-Secale Hybrids." Cytogenetic and Genome Research 147, no. 4 (2015): 268–73. http://dx.doi.org/10.1159/000444435.

Full text

Abstract:

Intergeneric hybrids and amphidiploid hybrids from crosses of Aegilopstauschii and Secale cereale were produced using young embryo rescue. The hybrids showed complete sets of both parental chromosomes. The dihaploid plants showed an average meiotic pairing configuration of 10.84 I + 1.57 II + 0.01 III. Genomic in situ staining revealed 3 types of bivalent associations, i.e. D-D, R-R and D-R at frequencies of 8.6, 8.2 and 83.3%, respectively. Trivalents consisted of D-R-D or R-D-R associations. These results suggested that both intra- and intergenomic chromosome homology were contributed to chr

APA, Harvard, Vancouver, ISO, and other styles

10

Nemeth, Csilla, Cai-yun Yang, Paul Kasprzak, et al. "Generation of amphidiploids from hybrids of wheat and related species from the genera Aegilops, Secale, Thinopyrum, and Triticum as a source of genetic variation for wheat improvement." Genome 58, no. 2 (2015): 71–79. http://dx.doi.org/10.1139/gen-2015-0002.

Full text

Abstract:

We aim to improve diversity of domesticated wheat by transferring genetic variation for important target traits from related wild and cultivated grass species. The present study describes the development of F1 hybrids between wheat and related species from the genera Aegilops, Secale, Thinopyrum, and Triticum and production of new amphidiploids. Amphidiploid lines were produced from 20 different distant relatives. Both colchicine and caffeine were successfully used to double the chromosome numbers. The genomic constitution of the newly formed amphidiploids derived from seven distant relatives

APA, Harvard, Vancouver, ISO, and other styles

11

Sybenga, J. "Preferential pairing estimates from multivalent frequencies in tetraploids." Genome 37, no. 6 (1994): 1045–55. http://dx.doi.org/10.1139/g94-149.

Full text

Abstract:

Mathematical models are presented for estimating preferential pairing and chiasma parameters in amphidiploids and autotetraploids on the basis of diakinesis or metaphase I configuration frequencies and are compared with other approaches of estimating affinity. With a preferential pairing factor p, estimated from quadrivalent and trivalent frequencies, and estimated chiasmate association factors for the two arms in quadrivalents (a(qu) and b(qu) for arms A and B, respectively) and in bivalents (a(bi) and b(bi)) a perfect fit between observed and predicted configuration frequencies can often be

APA, Harvard, Vancouver, ISO, and other styles

12

Breiman, Adina, and Dan Graur. "WHEAT EVOLUTION." Israel Journal of Plant Sciences 43, no. 2 (1995): 85–98. http://dx.doi.org/10.1080/07929978.1995.10676595.

Full text

Abstract:

Many wild and cultivated wheat species are amphidiploid, i.e., they are polyploid species containing two or more distinct nuclear genomes, each with its own independent evolutionary history, but whose genetic behavior resembles that of diploids. Amphidiploidy has important evolutionary consequences in wheat. Since the beginning of this century different methods have been employed to identify the diploid donors of the coexisting genomes in the polyploids. To date, several of the genomic donors have been identified, and the search for the others has been narrowed down considerably. Molecular met

APA, Harvard, Vancouver, ISO, and other styles

13

Lanham, Patrick G., Sarah Fennell, J. P. Moss, and W. Powell. "Detection of polymorphic loci in Arachis germplasm using random amplified polymorphic DNAs." Genome 35, no. 5 (1992): 885–89. http://dx.doi.org/10.1139/g92-134.

Full text

Abstract:

The development of easily scoreable genetic markers in Arachis will facilitate the introgression of desirable traits from wild species into adapted germplasm. We have used random amplified polymorphic DNAs (RAPDs) to identify polymorphic molecular markers in a range of wild and cultivated Arachis species. From a total of sixty 10-mer oligonucleotide primers, 49 polymorphic loci were identified between a cultivated A. hypogaea type (TMV-2) and a synthetic amphidiploid (B × C)2 created from a A. batizocoi and A. chacoense cross. The inheritance of polymorphic markers, both in the amphidiploid an

APA, Harvard, Vancouver, ISO, and other styles

14

Kerlan, M. C., A. M. Chevre, and F. Eber. "Interspecific hybrids between a transgenic rapeseed (Brassica napus) and related species: cytogenetical characterization and detection of the transgene." Genome 36, no. 6 (1993): 1099–106. http://dx.doi.org/10.1139/g93-146.

Full text

Abstract:

In interspecific hybrids produced between a transgenic rapeseed, an allotetraploid species, resistant to herbicide, phosphinotricin, and five diploid related species, the risk for gene introgression in weed genomes was explored through cytogenetic and bar gene characterizations. Among the 75 hybrids studied, most had the expected triploid structure, with the exception of B. napus – B. oleracea amphidiploid plants and one B. napus – S. arvensis amphidiploid plant. In triploid hybrid plants, the reciprocal hybrids did not exhibit any difference in their meiotic behavior. The comparison of the pe

APA, Harvard, Vancouver, ISO, and other styles

15

Bodnaryk, R. P. "Leaf epicuticular wax, an antixenotic factor in Brassicaceae that affects the rate and pattern of feeding of flea beetles, Phyllotreta cruciferae (Goeze)." Canadian Journal of Plant Science 72, no. 4 (1992): 1295–303. http://dx.doi.org/10.4141/cjps92-163.

Full text

Abstract:

Crop brassicas with waxy leaves (> 1000 mg kg−1) were fed upon by flea beetles, Phyllotreta cruciferae (Goeze) (Coleoptera: Chrysomelidae), at a low rate, and feeding occurred predominantly at the edges of leaves. Species with non-waxy leaves (< 240 mg kg−1) were fed upon at a high rate, and feeding occurred randomly throughout the leaf. The regression of feeding rate upon amount of epicuticular wax had an R2 = 0.64, indicating that 64% of the feeding variation of flea beetles on diverse species and cultivars of Brassicaceae was explained by a single factor regression. Feeding studies on

APA, Harvard, Vancouver, ISO, and other styles

16

Stoyanov, H., and I. Belchev. "Androgenic response of Triticum durum-Dasypyrum villosum amphidiploids and their parental forms." Vavilov Journal of Genetics and Breeding 26, no. 2 (2022): 139–45. http://dx.doi.org/10.18699/vjgb-22-17.

Full text

Abstract:

Wide hybridization in cereal crops is one of the most efficient tools for the enrichment of genetic variability and addressing a number of breeding problems related to resistance and tolerance to biotic and abiotic stresses. Therefore, a large number of amphidiploids between species possessing different morphological, genetic and physiological properties have been developed. One of the most valuable species with regard to the possibilities for introducing valuable traits and properties into wheat species is the wild Dasypyrum villosum. With the aim to study the androgenic response of the Triti

APA, Harvard, Vancouver, ISO, and other styles

17

Navalikhina, A. G., M. Z. Antonyuk, and T. K. Ternovska. "The role of siRNAs in genome stability maintaining in the bread wheat introgression lines." Faktori eksperimental'noi evolucii organizmiv 26 (September 1, 2020): 108–13. http://dx.doi.org/10.7124/feeo.v26.1251.

Full text

Abstract:

Aim. Deviations of the siRNAs levels from the parental ones in the plants with hybrid genomes are associated with the activation of transposable elements (TE). This, in turn, lead to the further genome rearrangements. Introgression lines Triticum aestivum / Amblyopyrum muticum are cytologically stable, however, there are visible signs of genetic and (or) epigenetic restructuring that are still going on. Molecular mechanisms of these processes are the subject of our study. Methods. The levels of siRNAs in the plant lemmas were determined by small RNA-seq. Reads of the small RNA libraries were a

APA, Harvard, Vancouver, ISO, and other styles

18

Stephens, Loren C., and Robin L. Fruth. "IMPROVEMENT OF NEW GUINEA IMPATIENS BY INTERSPECIFIC HYBRIDIZATION." HortScience 25, no. 9 (1990): 1177a—1177. http://dx.doi.org/10.21273/hortsci.25.9.1177a.

Full text

Abstract:

New Guinea Impatiens cultivars, I. hawkeri Bull., are susceptible to hot, windy conditions throughout much of the Midwest and Western U.S. Certain Indonesian Impatiens from Java (I. platypetala Lindl.) and Celebes (I. aurantiaca Teysm.) are much more heat-tolerant. Interspecific hybrids involving Java and Celebes Impatiens with the New Guinea species have been produced, but lack of fertility has been a persistent problem, unless amphidiploids are produced. Because selection is difficult in amphidiploid populations, other methods of recovering fertility have been investigated. Some interspecifi

APA, Harvard, Vancouver, ISO, and other styles

19

Blanpied, G. David. "Seed-propagated Amphidiploid Dendrobium Cultivars." HortScience 20, no. 1 (1985): 2–163. http://dx.doi.org/10.21273/hortsci.20.1.2.

Full text

Abstract:

Abstract Dendrobium orchids have become an important florist crop in Hawaii. The long, gracefully arching sprays (racemes) with numerous attractive individual flowers have a variety of uses. The sprays can be utilized in bud vases or combined effectively with other flowers in arrangements, while indvidual flowers can be used in corsages, wedding bouquets, and leis. The sprays are long lasting and are easy to pack and ship to distant markets.

APA, Harvard, Vancouver, ISO, and other styles

20

Vdovychenko, Zh, Ja Cichoński, L. Shubenko, and G. Chrzanowski. "The degree of genetic stability of amphidiploids from Triticinae tribe." Agrobìologìâ, no. 1(187) (May 24, 2024): 237–50. http://dx.doi.org/10.33245/2310-9270-2024-187-1-237-250.

Full text

Abstract:

Modern cultivars of wheat have narrowed genetic diversity. Their further improvement requires the expansion and enrichment of the gene pool. One of the sources of valuable genes for adaptive traits is considered to be related wild species of wheat, the involvement of which is possible through remote hybridization. However, the wide application of this method is severely limited due to a certain level of biological incompatibility of the crossed species: there is often no normal chromosome pairing, which leads to low fertility and the transfer of foreign genes to the genetic background of culti

APA, Harvard, Vancouver, ISO, and other styles

21

Jauhar, Prem P. "A reassessment of genome relationships between Thinopyrum bessarabicum and T. elongatum of the Triticeae." Genome 30, no. 6 (1988): 903–14. http://dx.doi.org/10.1139/g88-146.

Full text

Abstract:

Chromosome pairing and chiasma frequency in diploid (2n = 2x = 14; JE genomes), amphidiploid (2n = 4x = 28; JJEE), and triploid (2n = 3x = 21; JJE) hybrids between Thinopyrum bessarabicum (2n = 2x = 14; JJ) and T. elongatum (2n = 2x = 14; EE) were analyzed. The diploid hybrids (JE) showed a mean pairing of < 0.01V + 0.30IV + 0.28III + 4.98II + 1.97I with 8.36 chiasmata per cell. The pairing was rather poor, most bivalents being rod-shaped; some were clearly hetero-morphic and loosely paired (probably pseudochiasmate). The diploid hybrids were sterile, showing the reproductive isolation of t

APA, Harvard, Vancouver, ISO, and other styles

22

Wang, Richard R. C. "An assessment of genome analysis based on chromosome pairing in hybrids of perennial Triticeae." Genome 32, no. 2 (1989): 179–89. http://dx.doi.org/10.1139/g89-427.

Full text

Abstract:

Genome analysis based on chromosome pairing in diploid hybrids of perennial Triticeae species was examined along with those interpretations based on data of triploid and tetraploid hybrids and (or) species. The mean arm pairing frequency, c, of diploid hybrids with known genome combinations was used as a measure of chromosome homology. The mean trivalent frequency and the averaged sum of trivalents and quadrivalents were used as indices of pairing in triploids and tetraploids, respectively, to assess the validity of the diploid c values. The relative affinity, x value, of the respective triplo

APA, Harvard, Vancouver, ISO, and other styles

23

Thomsen, Tamara. "SYNTHESIS OF AN AMPHIDIPLOID BRASSICA SPECIES." HortScience 25, no. 9 (1990): 1116c—1116. http://dx.doi.org/10.21273/hortsci.25.9.1116c.

Full text

Abstract:

Stock species of Brassica rapa and Brassica nigra were crossed with the intention of synthesizing the amphidiploid species Brassica juncea. Of the stock species, a diploid and a tetraploid were given of both the B. rapa (Aaa and Aaaaa) and the B. nigra (Bbb and Bbbbb). However the identity of these was concealed, and they were presented as 1A 1, 1A2, 1A3, and 1A4. The objective of this experiment was not only to synthesize the species B. juncea (Abaabbb), but to determine the identity of 1A1, 1A2, 1A3, and 1A4 as to which of these were the diploid and tetraploid species, and to test the synthe

APA, Harvard, Vancouver, ISO, and other styles

24

Thomas, Huw M. "Analysis of synaptonemal complexes in the amphidiploid of Lolium multiflorum × Festuca drymeja." Genome 33, no. 6 (1990): 903–7. http://dx.doi.org/10.1139/g90-136.

Full text

Abstract:

Synaptonemal complexes in the amphidiploid Lolium multiflorum (4χ) × Festuca drymeja (4χ) have been examined by the whole mount spreading technique in nuclei with between 49 and 100% pairing. At mid to late zygotene nonhomologous associations are formed, with multivalents involving more than half the total axial element length in some cases. However, they are corrected by pachytene. There is evidence of differences in the timing or rate of pairing between the two sets of chromosomes; the L. multiflorum chromosomes seem more advanced than the F. drymeja chromosomes in their pairing at mid and l

APA, Harvard, Vancouver, ISO, and other styles

25

Harutyunyan, Zara, Manvel Badalyan, Iryna Vardanian, Zaruhi Hoveyan, Andranik Barseghyan, and Andreas Melikyan. "Studying of Polymorphism of Some Grain Crop from GenBank Collection of Armenia." E3S Web of Conferences 463 (2023): 01006. http://dx.doi.org/10.1051/e3sconf/202346301006.

Full text

Abstract:

During the research, 15 genotypes of grain crop (4 spiecies of Hordeum and 11 of Triticum) from the genbank collection of the Scientific Center of Agrobiotechnology were studied. The gluten locus of all studied cultivated and wild species is polymorphic consisting of GluA, GluB, GluC, GluD, GluE alleles. Moreover, GluB, GluC and GluD alleles have the highest meeting frequency, it is 82.35%. The GluE allele has the lowest frequency of occurrence at 41.17%. The following genotypes were formed in the gluten locus: GluAA, AB, BB, BC, CC, CD, DE, EE, EF, the frequency of which is equal to 47.05, 29

APA, Harvard, Vancouver, ISO, and other styles

26

Snowdon, R. J., W. Köhler, and A. Köhler. "Chromosomal localization and characterization of rDNA loci in the Brassica A and C genomes." Genome 40, no. 4 (1997): 582–87. http://dx.doi.org/10.1139/g97-076.

Full text

Abstract:

Using fluorescence in situ hybridization, we located ribosomal DNA loci on prometaphase chromosomes of the diploid species Brassica rapa and Brassica oleracea and their amphidiploid Brassica napus. Based on comparisons of chromosome morphology and hybridization patterns, we characterized the individual B. napus rDNA loci according to their presumed origins in the Brassica A and C genomes. As reported in other studies, the sum of rDNA loci observed on B. rapa (AA genome) and B. oleracea (CC genome) chromosomes was one greater than the total number of loci seen in their amphidiploid B. napus (AA

APA, Harvard, Vancouver, ISO, and other styles

27

Ma, Yan, David H. Byrne, and Jing Chen. "Amphidiploid Induction from Diploid Rose Interspecific Hybrids." HortScience 32, no. 2 (1997): 292–95. http://dx.doi.org/10.21273/hortsci.32.2.292.

Full text

Abstract:

A high priority in rose (Rosa spp.) breeding research is the transfer of disease resistance, especially to black spot (Diplocarpon rosae Lib.), from wild diploid Rosa species to modern rose cultivars. To this end, amphidiploids (2n = 4x = 28) were induced with colchicine from five interspecific diploid (2n = 2x = 14) hybrids involving the black spot resistant diploid species R. wichuraiana Crép, R. roxburghii Thratt., R. banksiae Ait., R. rugosa rubra Hort., and R. setigera Michaux. Two application procedures (agitation of excised nodes in colchicine solution or tissue culture of shoots on me

APA, Harvard, Vancouver, ISO, and other styles

28

Axelsson, T., C. M. Bowman, A. G. Sharpe, D. J. Lydiate, and U. Lagercrantz. "Amphidiploid Brassica juncea contains conserved progenitor genomes." Genome 43, no. 4 (2000): 679–88. http://dx.doi.org/10.1139/g00-026.

Full text

Abstract:

To perform a detailed study of genome evolution in the natural Brassica amphidiploid B. juncea, we have constructed two linkage maps based on RFLP (restriction fragment length polymorphism) markers; one generated from a cross between a resynthesized B. juncea (a chromosome doubled interspecific B. rapa × B. nigra hybrid) and a natural B. juncea cultivar, the other from a cross between two B. juncea cultivars. By using a common cultivar in both crosses, the two maps could be unambiguously integrated. All loci exhibited disomic inheritance of parental alleles in the natural × resynthesized cross

APA, Harvard, Vancouver, ISO, and other styles

29

SMITH, GIDEON F. "The taxonomy and nomenclature of Kalanchoe ×vadensis [K. blossfeldiana × K. marmorata var. somaliensis] (Crassulaceae subfam. Kalanchooideae), an early nothospecies produced in The Netherlands in the 1950s." Phytotaxa 561, no. 2 (2022): 199–209. http://dx.doi.org/10.11646/phytotaxa.561.2.8.

Full text

Abstract:

The taxonomy and nomenclature of Kalanchoe ×vadensis (Crassulaceae subfam. Kalanchooideae) [hybrid formula: K. blossfeldiana × K. marmorata var. somaliensis], an artificially produced amphidiploid, are discussed and clarified. An amplified description is provided for the nothospecies. The name K. ×vadensis is epitypified.

APA, Harvard, Vancouver, ISO, and other styles

30

Jakir Hasan, Muhammad, Stephen E. Strelkov, Ronald J. Howard, and Habibur Rahman. "Screening of Brassica germplasm for resistance to Plasmodiophora brassicae pathotypes prevalent in Canada for broadening diversity in clubroot resistance." Canadian Journal of Plant Science 92, no. 3 (2012): 501–15. http://dx.doi.org/10.4141/cjps2010-006.

Full text

Abstract:

Hasan, M. J., Strelkov, S. E., Howard, R. J. and Rahman, H. 2012. Screening of Brassica germplasm for resistance to Plasmodiophora brassicae pathotypes prevalent in Canada for broadening diversity in clubroot resistance. Can. J. Plant Sci. 92: 501–515. Clubroot disease of crucifers, caused by Plasmodiophora brassicae, poses a threat to the Canadian canola industry, and the development of resistant cultivars is urgently needed. Germplasm resistant to local pathotype(s) is the prime requirement for breeding clubroot-resistant cultivars. The objective of this study was to identify Brassica germpl

APA, Harvard, Vancouver, ISO, and other styles

31

Kopsell, Dean A., J. Scott McElroy, Carl E. Sams, and David E. Kopsell. "Genetic Variation in Carotenoid Concentrations among Diploid and Amphidiploid Rapid-cycling Brassica Species." HortScience 42, no. 3 (2007): 461–65. http://dx.doi.org/10.21273/hortsci.42.3.461.

Full text

Abstract:

Vegetable crops can be significant sources of nutritionally important dietary carotenoids, and Brassica are sources that also exhibit antioxidant and anticarcinogenic activity. The family Brassicaceae contains a diverse group of plant species commercially important in many parts of the world. The six economically important Brassica species are closely related genetically. Three diploid species (B. nigra, B. rapa, B. oleracea) are the natural progenitors of the amphidiploid species (B. juncea, B. napus, B. carinata). The objective of this study was to characterize the accumulation of important

APA, Harvard, Vancouver, ISO, and other styles

32

FRANDSEN, H. N., and Ö. WINGE. "BRASSICA NAPOCAMPESTRIS, A NEW CONSTANT AMPHIDIPLOID SPECIES HYBRID." Hereditas 16, no. 1-2 (2010): 212–18. http://dx.doi.org/10.1111/j.1601-5223.1932.tb02568.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Kh.A.Muminov. "MORPHOLOGICAL AND AGRONOMIC CHARACTERISTICS OF COTTON AMPHIDIPLOID HYBRIDS." Multidisciplinary Journal of Science and Technology 4, no. 12 (2024): 560–63. https://doi.org/10.5281/zenodo.14538749.

Full text

Abstract:

The results of research on studying of the morphobiologic and economically valuable traits of amphidiploids F<sub>1</sub> (cultivar «Kelajak»<em> </em>(<em>G.hirsutum subsp. euhirsutum</em>)<em> </em>х<em> </em>(<em>G.arboreum subsp. perenne </em>x<em> G.arboreum subsp. obtusifolium var. indicum)</em>) and F<sub>1</sub> (cultivar «Kelajak»<em> </em>(<em>G.hirsutum subsp. euhirsutum</em>)<em> </em>х<em> </em>(<em>G.arboreum subsp. obtusifolium var. indicum </em>x<em> G.herbaceum subsp. pseudoarboreum</em>)) obtained by use of vicarious cotton species.

APA, Harvard, Vancouver, ISO, and other styles

34

Axelsson, T., C. M. Bowman, A. G. Sharpe, D. J. Lydiate, and U. Lagercrantz. "Amphidiploid Brassica juncea contains conserved progenitor genomes." Genome 43, no. 4 (2000): 679–88. http://dx.doi.org/10.1139/gen-43-4-679.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Ashraf, M., Nyla Nazir, and T. McNeilly. "Comparative salt tolerance of amphidiploid and diploid Brassica species." Plant Science 160, no. 4 (2001): 683–89. http://dx.doi.org/10.1016/s0168-9452(00)00449-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Depta, Anna, Teresa Doroszewska, and Apoloniusz Berbeć. "Assessment of Resistance to PVY in Interspecific Hybrids Obtained by Combining Type va Resistance from Nicotiana tabacum with the Resistance from PVY-Immune Species Nicotiana africana." Agriculture 14, no. 12 (2024): 2284. https://doi.org/10.3390/agriculture14122284.

Full text

Abstract:

Tobacco veinal necrosis caused by the potato virus Y (PVY) substantially affects yields and crop quality of tobacco. PVY shows high variability in virulence due to numerous mutations and recombinations. The types of resistance available for tobacco include the va type, effective against some PVY isolates but succumbing to others, and the Nicotiana africana-derived type, fully effective in its native genetic milieu but limited to varying degrees of tolerance when transferred to N. tabacum. The objective of this study was to evaluate the pyramiding potential of these two sources of resistance in

APA, Harvard, Vancouver, ISO, and other styles

37

Pirotta, Melina Zacarelli, Fabiana Mota da Silva, Marcos Doniseti Michelotto, Alessandra Pereira Fávero, Ignácio José de Godoy, and Sandra Helena Unêda-Trevisoli. "Resistance to Enneothrips flavens Moulton and genetic parameters estimation in interspecific genotypes of peanut." Acta Scientiarum. Agronomy 39, no. 3 (2017): 339. http://dx.doi.org/10.4025/actasciagron.v39i3.32776.

Full text

Abstract:

Peanut is an oilseed crop of great importance for Brazilian agribusiness. A major factor affecting its production is pest incidence, mainly thrips. This study aimed to evaluate the potential for resistance to Enneothrips flavens in genotypes derived from the cross between IAC 503 and the amphidiploid (A. magna x A. cardenasii)4x and to estimate the genetic and phenotype parameters in these genotypes, allowing for better targeting in the selection. The experiments were conducted in a Federer augmented block design with additional checks in two generations (F3 and F4). Resistance to thrips was e

APA, Harvard, Vancouver, ISO, and other styles

38

Haber, Erich. "The hybrid identity and taxonomic status of Pyrola sikkimensis (Ericaceae) from eastern Himalaya." Canadian Journal of Botany 63, no. 1 (1985): 133–37. http://dx.doi.org/10.1139/b85-016.

Full text

Abstract:

Pyrola sikkimensis is recognized as being of hybrid origin between P. minor and P. rotundifolia s.l. on the basis of several distinctive floral features that characterize hybrids of Pyrola in which one of the parents is P. minor. The similarity in morphology of P. sikkimensis to P. media, an amphidiploid between P. minor and P. rotundifolia, suggests that P. sikkimensis is conspecific with P. media.

APA, Harvard, Vancouver, ISO, and other styles

39

Ray, Dennis T., Anson E. Thompson, and Allen C. Gathman. "Interspecific Hybridization in Cuphea." HortScience 23, no. 4 (1988): 751–53. http://dx.doi.org/10.21273/hortsci.23.4.751.

Full text

Abstract:

Abstract Eighteen interspecific hybrids from eight different Cuphea species have been confirmed morphologically and cytologically. Seven hybrids from reciprocal crosses of various accessions of the herbaceous annual C. procumbens (N = 9) and the semiwoody perennial C. llavea (N = 9) exhibited a relatively high degree of fertility. Some hybrids have horticultural potential and are currently undergoing evaluation as new pot or bedding plants. Other hybrids that are sterile due to meiotic irregularities are: C. procumbens (N = 9) × C. crassiflora (N = 12); C. procumbens (N = 9) × C. leptopoda (N

APA, Harvard, Vancouver, ISO, and other styles

40

Singh, Amit K., Kitty Lo, Chongmei Dong, Peng Zhang, Richard M. Trethowan, and Peter J. Sharp. "Development of RNA-seq-based molecular markers for characterizing Thinopyrum bessarabicum and Secale introgressions in wheat." Genome 63, no. 11 (2020): 525–34. http://dx.doi.org/10.1139/gen-2020-0057.

Full text

Abstract:

Sequence-based markers have added a new dimension in the efficiency of identifying alien introgressions in wheat. Expressed sequence tag-sequence tagged sites (EST-STS) markers have proved useful in tracing alien chromatin. In this study, we report the development of Thinopyrum bessarabicum- and Secale anatolicum-specific EST-STS markers and their application in tracing respective alien chromatin introgressions in wheat. The parental lines, Chinese Spring (CS), ISR991.1 (CS/Th. bessarabicum amphidiploid), and ISR1049.2 (CS/Secale anatolicum amphidiploid), were used as core experimental materia

APA, Harvard, Vancouver, ISO, and other styles

41

Wang, Richard R. C. "Amphidiploids of perennial Triticeae. I. Synthetic Thinopyrum species and their hybrids." Genome 35, no. 6 (1992): 951–56. http://dx.doi.org/10.1139/g92-145.

Full text

Abstract:

Amphiploids of the hybrid Thinopyrum elongatum (Host) D.R. Dewey (2n = 2x = 14; JeJe) × Pseudoroegneria spicata (Pursh) A. Löve (2n = 2x = 14; SS) were obtained by the colchicine treatment of regenerants from inflorescence culture. Meiotic pairings in the JJSS amphiploids averaged 2.90 I + 4.44 rod II + 7.50 ring II + 0.14 III + 0.20 IV at metaphase I but had 13.38 ring II + 0.30 IV at diakinesis. This amphidiploid was crossed with that of T. bessarabicum (Savul. &Rayss) A. Löve (2n = 2x = 14; JbJb) × T. elongatum and the latter was also crossed with T. scirpeum (K. Presl) D.R. Dewey (2n =

APA, Harvard, Vancouver, ISO, and other styles

42

Sharpe, A. G., I. A. P. Parkin, D. J. Keith, and D. J. Lydiate. "Frequent nonreciprocal translocations in the amphidiploid genome of oilseed rape (Brassica napus)." Genome 38, no. 6 (1995): 1112–21. http://dx.doi.org/10.1139/g95-148.

Full text

Abstract:

A RFLP map of Brassica napus, consisting of 277 loci arranged in 19 linkage groups, was produced from genetic segregation in a combined population of 174 doubled-haploid microspore-derived lines. The integration of this map with a B. napus map derived from a resynthesized B. napus × oilseed rape cross allowed the 10 linkage groups of the B. napus A genome and the 9 linkage groups of the C genome to be identified. Collinear patterns of marker loci on different linkage groups suggested potential partial homoeologues. RFLP patterns consistent with aberrant chromosomes were observed in 9 of the 17

APA, Harvard, Vancouver, ISO, and other styles

43

Tucker, Arthur O., and Henrietta L. Chambers. "Mentha canadensisL. (Lamiaceae): a relict amphidiploid from the Lower Tertiary." TAXON 51, no. 4 (2002): 703–18. http://dx.doi.org/10.2307/3647334.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Ma, Yan, and David H. Byrne. "Meiotic Behavior in an Amphidiploid Rose and Its Hybrid Progeny." HortScience 33, no. 3 (1998): 483d—483. http://dx.doi.org/10.21273/hortsci.33.3.483d.

Full text

Abstract:

The amphidiploid rose 86-7 (Rosa wichuraiana × R. rugosa rubra) and its hybrids with the tetraploid breeding selection 82-1134 were analyzed for meiotic configuration frequencies and meiotic abnormalities. Genomic relationships in these hybrids were interpreted with the aid of a model of meiotic chromosome association in tetraploids. The optimized solutions to this model indicated a pattern intermediate between the “211” pattern, with one pair of closest genomes, and the “ring4” pattern, in which one of three possible pairing arrangements is strongly suppressed. The same configuration frequenc

APA, Harvard, Vancouver, ISO, and other styles

45

Seo, Bong-Bo, and Hyun-Hee Kim. "Regeneration of amphidiploid plants from tissue cultures of Allium wakegi." Plant Cell Reports 7, no. 5 (1988): 297–300. http://dx.doi.org/10.1007/bf00269922.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Kopsell, Dean A., Scott McElroy, Carl Sams, and David Kopsell. "(167) Carotenoid Accumulation Among the Diploid and Amphidiploid Brassica Species." HortScience 41, no. 4 (2006): 1081A—1081. http://dx.doi.org/10.21273/hortsci.41.4.1081a.

Full text

Abstract:

Vegetable crops can be significant sources of nutritionally important dietary carotenoids and Brassica vegetables are sources that also exhibit antioxidant and anticarcinogenic activity. The family Brassicaceae contains a diverse group of plant species commercially important in many parts of the world. The six economically important Brassica species are closely related genetically. Three diploid species (B. nigra, B. rapa, and B. oleracea) are the natural progenitors of the allotetraploid species (B. juncea, B. napus, and B. carinata). The objective of this study was to characterize the accumu

APA, Harvard, Vancouver, ISO, and other styles

47

Jamet, Elisabeth, Andrée Durr, and Jacqueline Fleck. "Absence of some truncated genes in the amphidiploid Nicotiana tabacum." Gene 59, no. 2-3 (1987): 213–21. http://dx.doi.org/10.1016/0378-1119(87)90329-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

IANCU, Paula, and Marin SOARE. "SYNTHETIC AMPHIDIPLOID WHEAT – A POTENTIAL SOURCE OF RAISING QUALITY IMPROVEMENT." "Annals of the University of Craiova - Agriculture Montanology Cadastre Series " 52, no. 2 (2023): 84–89. http://dx.doi.org/10.52846/aamc.v52i2.1393.

Full text

Abstract:

Synthetic wheat is from the genetic point of view an amphidiploid which combines the genome of parents. It often exhibits superior characteristics that contribute to the enlargement of genetic variation in breeding programs or in the development of new varieties. Breeding programs of NARDI Fundulea, the most important agricultural research unit in Romania began to increase genetic variability by incorporating wild genes to exploit the improvement of wheat through crosses with wild ancestors and succeeded in creating lines of synthetic wheat with some higher quality components. Experimented lin

APA, Harvard, Vancouver, ISO, and other styles

49

Komyshev, Evgenii G., Mikhail A. Genaev, Yuliya V. Kruchinina, Vasily S. Koval, Nikolay P. Goncharov, and Dmitry A. Afonnikov. "Evaluation of the Spike Diversity of Seven Hexaploid Wheat Species and an Artificial Amphidiploid Using a Quadrangle Model Obtained from 2D Images." Plants 13, no. 19 (2024): 2736. http://dx.doi.org/10.3390/plants13192736.

Full text

Abstract:

The spike shape and morphometric characteristics are among the key characteristics of cultivated cereals, being associated with their productivity. These traits are often used for the plant taxonomy and authenticity of hexaploid wheat species. Manual measurement of spike characteristics is tedious and not precise. Recently, the authors of this study developed a method for wheat spike morphometry utilizing 2D image analysis. Here, this method is applied to study variations in spike size and shape for 190 plants of seven hexaploid (2n = 6x = 42) species and one artificial amphidiploid of wheat.

APA, Harvard, Vancouver, ISO, and other styles

50

Tucker, Arthur O., and Henrietta L. Chambers. "Mentha canadensis L. (Lamiaceae): A Relict Amphidiploid from the Lower Tertiary." Taxon 51, no. 4 (2002): 703. http://dx.doi.org/10.2307/1555024.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!