Interspecific crosses within the Streptocarpus subgenus Streptocarpella and intergeneric crosses between Streptocarpella and Saintpaulia ionantha genotypes

2012 ◽  
Vol 148 ◽  
pp. 215-222 ◽  
Author(s):  
Rahim Afkhami-Sarvestani ◽  
Margrethe Serek ◽  
Traud Winkelmann
Keyword(s):  
Interspecific Crosses ◽  
Intergeneric Crosses ◽  
Saintpaulia Ionantha

scholarly journals Interspecific and Intergeneric Hybridization in Baptisia and Thermopsis

HortScience ◽  
2017 ◽  
Vol 52 (9) ◽  
pp. 1177-1181
Author(s):  
Susan M. Hawkins ◽  
John M. Ruter ◽  
Carol D. Robacker
Keyword(s):  
United States ◽  
North America ◽  
Female Parent ◽  
Woody Species ◽  
Interspecific Crosses ◽  
Intergeneric Hybridization ◽  
Male And Female ◽  
Intergeneric Crosses ◽  
Morphological Differences ◽  
Putative Hybrids

Interspecific and intergeneric crosses were performed between species in the genera Baptisia and Thermopsis with the goal of creating hybrids with the best qualities of both parents. Baptisia australis (L.) R. Br. was used as both the male and female parent in intergeneric crosses. Thermopsis chinensis Benth. ex S. Moore, T. lupinoides (L.) Link, and T. villosa Fernald & B.G. Schub. were used as male and female parents in both interspecific and intergeneric crosses. Pollen was collected from B. alba (L.) Vent., B. bracteata Muhl. ex Elliott, and B. lanceolata (Walt.) Ell. and used to make interspecific and intergeneric crosses. Putative hybrids were obtained from both interspecific and intergeneric crosses. Interspecific crosses produced a higher percentage of pollinations resulting in seed set and the number of seeds per pollination than intergeneric crosses. Morphological differences between parent species and progeny were evident in putative hybrids resulting from intergeneric crosses between T. villosa and B. australis and T. villosa and B. alba. Most putative hybrids bloomed during the second year after germination. Because seedlings could be obtained from both interspecific and intergeneric crosses, hybrids within and between the genera Baptisia and Thermopsis are feasible. The Fabaceae family contains 670–750 genera and 18,000–19,000 species. Baptisia (commonly called false or wild indigo) and Thermopsis (commonly named false lupine) of the Fabaceae belong to the tribe Thermopsidae, which comprises 46 species in six genera. All species in Thermopsis and Baptisia are herbaceous; they are the only two genera in Thermopsidae that do not have woody species. Thermopsis contains 23 species and has a wide-spread distribution with species endemic to Asia and much of temperate North America. Although Thermopsis is considered to have originated in central Asia, T. chinensis Benth. ex S. Moore and T. fabacea (Pallas) Candole are thought to have originated in North America and migrated over the Bering Land Strait to Asia. Three Thermopsis species, T. fraxinifolia Nutt. ex M.A. Curtis, T. mollis (Michx.) M.A. Curtis ex A. Gray, and T. villosa Fernald & B.G. Schub., are native to the southeastern United States. Baptisia contains 15–17 species that are endemic to the southeastern and midwestern United States.

scholarly journals Interspecific and Intergeneric Hybridization in Dissotis and Tibouchina

HortScience ◽  
2016 ◽  
Vol 51 (4) ◽  
pp. 325-329 ◽  
Author(s):  
Susan M. Hawkins ◽  
John M. Ruter ◽  
Carol D. Robacker
Keyword(s):  
Seed Set ◽  
Slow Growth ◽  
Intergeneric Hybrids ◽  
Interspecific Crosses ◽  
Intergeneric Hybridization ◽  
Conventional Breeding ◽  
Intergeneric Crosses

Four species of Dissotis and three species of Tibouchina, two genera of the Melastomataceae family, were crossed in an attempt to create interspecific and intergeneric hybrids. Intergeneric crosses set seed at a rate of 18.1% and interspecific crosses had a 32.3% rate of seed set. Germination was extremely poor, with only four crosses having germinated seed. Crosses produced 31 seedlings. Three of the seedlings were from intergeneric crosses between Dissotis canescens and Tibouchina lepidota. Interspecific crosses produced 25 seedlings from crosses between Dissotis princeps and Dissotis rotundifolia and three seedlings from crosses between D. canescens and D. princeps. The prognosis for conventional breeding for species in Dissotis and Tibouchina is poor due to low seed set, poor germination, and slow growth of progeny.

Investigations in the Triticinae I. Colchicine techniques for chromosome doubling in interspecific and intergeneric hybridization

1950 ◽  
Vol 40 (1-2) ◽  
pp. 9-18 ◽  
Author(s):  
G. D. H. Bell
Keyword(s):  
Differential Cross ◽  
Chromosome Doubling ◽  
Interspecific Crosses ◽  
Intergeneric Hybridization ◽  
Intergeneric Crosses ◽  
Small Glass ◽  
Group Response ◽  
Cut Leaves ◽  
Plant Fertility ◽  
Methods Of Application

1. Sixteen colchicine treatments, involving five main methods of application and six concentrations, have been used on Triticum interspecific crosses, Triticum—Aegilops intergeneric crosses and Agropyron—Triticum intergeneric crosses.2. The efficacy of the major treatments in terms of plant survival, plant fertility and ear fertility has been compared, and the most successful method of application has been found to be absorption through the cut leaves—i.e. capping cut-back tillers with a small glass phial containing colchicine.3. Fertility induced by colchicine is not complete. In plants producing grain, every ear is not necessarily fertile, nor are all spikelets in fertile ears usually fertile.4. Evidence has been obtained of differential cross response to colchicine action, and also of cross-group response to particular treatments.

INTERSPECIFIC AND INTERGENERIC CROSSES WITH HORDEUM

1940 ◽  
Vol 18c (8) ◽  
pp. 372-373 ◽  
Author(s):  
F. L. Quincke
Keyword(s):  
Hordeum Vulgare ◽  
Secale Cereale ◽  
Interspecific Crosses ◽  
Intergeneric Crosses ◽  
Hordeum Jubatum ◽  
Viable Seeds

Crosses are described between Hordeum jubatum (28 chrom.) × Hordeum vulgare (14 chrom.), H. nodosum (42 chrom.) × H. vulgare, H. vulgare × Secale cereale (14 chrom.), H. jubatum × S. cereale. In the interspecific crosses viable seeds were obtained which produced healthy and vigorous plants. The seeds of the intergeneric crosses did not germinate.

STUDY OF GENETIC BEHAVIOUR OF INTERSPECIFIC CROSSES OF MAIZE-TEOSINTE (1)

2013 ◽  
Vol 4 (12) ◽  
pp. 1779-1791
Author(s):  
M. Abdel-Aty ◽  
Soad Yousef ◽  
M. Ghazy ◽  
S. Basueny
Keyword(s):  
Interspecific Crosses ◽  
Genetic Behaviour

scholarly journals Epistatic Control of Non-Mendelian Inheritance in Mouse Interspecific Crosses

Genetics ◽  
1996 ◽  
Vol 143 (4) ◽  
pp. 1739-1752 ◽  
Author(s):  
Xavier Montagutelli ◽  
Rowena Turner ◽  
Joseph H Nadeau
Keyword(s):  
X Chromosome ◽  
Genetic Basis ◽  
Mendelian Inheritance ◽  
The Other ◽  
Interspecific Crosses ◽  
Chromosome 2 ◽  
Mus Spretus ◽  
F1 Hybrid ◽  
Strong Deviation ◽  
Marker Loci

Abstract Strong deviation of allele frequencies from Mendelian inheritance favoring Mus spretus-derived alleles has been described previously for X-linked loci in four mouse interspecific crosses. We reanalyzed data for three of these crosses focusing on the location of the gene(s) controlling deviation on the X chromosome and the genetic basis for incomplete deviation. At least two loci control deviation on the X chromosome, one near Xist (the candidate gene controlling X inactivation) and the other more centromerically located. In all three crosses, strong epistasis was found between loci near Xist and marker loci on the central portion of chromosome 2. The mechanism for this deviation from Mendelian expectations is not yet known but it is probably based on lethality of embryos carrying particular combinations of alleles rather than true segregation distortion during oogenesis in F1 hybrid females.

scholarly journals Introgression of Resistance to Leafminer (Liriomyza cicerina Rondani) from Cicer reticulatum Ladiz. to C. arietinum L. and Relationships between Potential Biochemical Selection Criteria

Agronomy ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 57
Author(s):  
Nesrine Chrigui ◽  
Duygu Sari ◽  
Hatice Sari ◽  
Tuba Eker ◽  
Mehmet Fatih Cengiz ◽  
...  
Keyword(s):  
Organic Acids ◽  
Succinic Acid ◽  
Selection Criteria ◽  
Insect Pests ◽  
Recombinant Inbred Lines ◽  
Selection Criterion ◽  
Leaf Miner ◽  
Interspecific Crosses ◽  
Visual Scale ◽  
Resistant Varieties

The chickpea leafminer, Liriomyza cicerina (Rondani), is one of the most destructive insect pests of cultivated chickpea (Cicer arietinum L.) in the Mediterranean region under field conditions. For sustainable and environmentally friendly chickpea production, efforts have been devoted to managing the leafminer via decreasing the use of insecticides. Breeding of new resistant varieties is not only an efficient and practical approach, but also cost-effective and environmentally sensitive. To improve resistant varieties, breeders need reliable biochemical selection criteria that can be used in breeding programs. The first objective was to investigate the possible introgression of resistance to the leafminer from C. reticulatum Ladiz. (resistant) to C. arietinum (susceptible), then, to estimate inheritance of resistance to the leafminer for efficient breeding strategies, and finally, to study organic acid contents as selection criteria. Recombinant inbred lines (RILs) and their parents were evaluated using a visual scale of 1–9 (1 = free from leafminer damage and 9 = mines in more than 91% of the leaflets and defoliation greater than 31%) in the field under natural infestation conditions after the susceptible parent and check had scores of >7 on the visual scale. Superior RILs were found for resistance to the leafminer, and agro-morphological traits indicating that introgression of resistance to leaf miner from C. reticulatum to C. arietinum could be possible using interspecific crosses. The inheritance pattern of resistance to the leafminer in RILs was shown to be quantitative. Organic acids, including oxalic, malic, quinic, tartaric, citric and succinic acids in RILs grown in the field under insect epidemic conditions and in the greenhouse under non-infested conditions were detected by using high performance liquid chromatography (HPLC). In general, organic acids were found to be higher in resistant RILs than susceptible RILs. Path and correlation coefficients showed that succinic acid exhibited the highest direct effects on resistance to the leafminer. Multivariate analyses, including path, correlation and factor analyses suggested that a high level of succinic acid could be used as a potential biochemical selection criterion for resistance to leafminer in chickpea. Resistant RILs with a high seed yield resembling kabuli chickpea can be grown directly in the target environments under leaf miner infestation conditions.

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