The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Recombinant inbred lines from the oat (Avena sativa L.) population Kanota × Ogle were analyzed in order to detect quantitative trait loci for Barley Yellow Dwarf resistance. Plants were scored for BYD symptoms in three locations (Urbana-Illinois, Ithaca-New York, and a greenhouse), and in four years (1992, 1993, 1994, and 1995). All plants were inoculated with infected aphids at the three-leaf stage,...
Rooted cuttings of white flowered cv. `Purnima' and red flowered cv. `Colchi Bahar' of Chrysanthemum morifolium were treated with gamma rays. Sectorial somatic mutations in flower colour were detected in both the cvs. Mutated ray florets (yellow colour for both the cvs) were cultured on agar-solidified Murashige & Skoog basal medium supplemented with sucrose and different combinations of BAP/kinetin...
The beet armyworm (Spodoptera exigua Hübner)is the most important pest in tropical Alliumcultivations. All shallot (Allium cepa L. group Aggregatum) cultivars are susceptible to this pest. Therefore accessions from three wild Alliumspecies, namely A. galanthum Kar. et Kir., A. fistulosum L. and A. royleiStearn, next to A. cepa L. were used to screen for resistance. First of all, a reliable bio-assay...
Resistance to the southern root-knot nematode Meloidogyne incognita Chitwood would be an important attribute of lettuce Lactuca sativa L. cultivars adapted to both protected and field cultivation in tropical regions. `Grand Rapids' and a few other cultivars are reported to be resistant to this nematode. In this paper, we studied the inheritance of the resistant reaction of `Grand Rapids' (P2) in a...
The 18s-5.8s-25s ribosomal gene (18s-25s rDNA) in higher plants is present in multiple copies, on different chromosomes, as tandemly repeated units. Among the multiple BamHI sites that occur in the repeat unit, only the site in the middle of the 25s rRNA coding region is methylated in most cereals and pulses. BamHI restriction enzyme analyses of the mungbean 18s-25s rDNA showed the presence of two...
Inheritance of yield and yield contributing characters were investigated using generation mean analysis, utilising the means of six basic populations viz., P1, P2, F1, F2, BC1P1 and BC1P2 in four crosses of Vigna sesquipedalis. The analysis reiterated that the importance of dominance (h) gene effects for pod yield/plant and pods/plant as compared to additive (d) gene effects. However, significant...
The aim of this study was to determine the genetic components controlling yield in an F1 cacao cross between Catongo and Pound 12 clones. Genetic maps were constructed for the two parents using molecular markers which detected 158 polymorphic loci covering 772 cM for the heterozygous genotype Pound 12 and only 4 loci representing 16.9 cM of a linkage group which indicated a high level of homozygosity...
Two related segregating populations of Theobroma cacao L. were analysed for their resistance to Phytophthora palmivora. The first F1 population was obtained by crossing two susceptible cacao clones of Catongo (a highly homozygous genotype) and Pound 12(a highly heterozygous genotype) and the second population was obtained by backcrossing a single F1 tree with Catongo. The genetic maps obtained for...
Indica and Japonica differentiation under the species of Oryza sativa L. has been documented using morphological characters, isozyme and DNA markers. We illustrate marker assisted analysis of genetic differentiation with a sample of RFLP and isozyme data from 111 accessions of rice lines and compare it to morphological differentiation based on Cheng and Wang' morphological character index. The results...
The behavior of 17 gamma irradiation mutant lines derived from the aluminum sensitive wheat cultivar `Anahuac' was compared with two sensitive and three tolerant cultivars in nutritent solutions containing seven Al3+ concentrations (0; 0.5; 1; 2; 4; 6 and10 mg/liter), at a temperature of 25 °C and 4.0 pH. Tolerance was measured by the continued growth of the primary roots in a solution without aluminum...
In order to determine the effects of bunt inoculation on frost resistance and winter hardiness in lines containing resistance genes, the bunt [Tilletia foetida (Wallroth) Liro, T. caries (DC.) Tulasne] susceptibility of wheat lines containing bunt resistance genesBt1 to Bt10 and the effect of the year on the degree of infection were studied over six years from 1991 to 1997 in an artificial inoculation...
Evaluation of seedling populations assists in identifying those plants most desirable as parents for a breeding programme. A multivariate analysis of variance (Manova) showed that the seedling populations from 6 kiwifruit (Actinidia deliciosa) crosses differed in their overall merit. Discriminant functions were then used to identify the characters most powerful in distinguishing between populations...
Previously chromosome 3A of wheat (Triticum aestivum L.) was reported to carry genes influencing yield, yield components, plant height, and anthesis date. The objective of current study was to survey various molecular marker systems for their ability to detect polymorphism between wheat cultivars Cheyenne(CNN) and Wichita (WI), particularly for chromosome3A. Seventy-seven `sequence tagged site' (STS),...
Fertile, green, di-haploid plants were obtained at high frequencies from several indica × Basmati rice F1 hybrids and/or F2 plant populations using an improved anther culture procedure. Anthers from cold-pretreated (10 °C for 10 d) panicles of six indica (HKR120, HKR86-3, HKR86-217, PR106, Gobind andCH2 double dwarf) and two Basmati rice (Basmati 370,Taraori Basmati) varieties and 14 heterotic indica...
Wild emmer wheat, Triticum dicoccoides, grows naturally in several habitats in northern Israel. The assumption that a genotype is better adapted to the `native' soil from which it was collected than to other soils, was tested. Each of nine T. dicoccoides accessions from nine different habitats and three wheat cultivars was sown in soils taken from all habitats, and grown in a greenhouse over 3 years...
The internal transcribed spacers ITS1 and ITS2 in the18S-5.8S-26S rDNA repeat units were amplified and cloned from Angelica gigas Nakai, Angelica acutiloba (Siebold & Zucc.) Kitagawa, A. dahurica Maxim, Angelica decursiva (Miq.) Franch. & Savat, Bupleurum falcatum L. and Peucedanum japonicum Thunb. Sequence analyses showed that ITS1 is approx. 215 bp, the 5.8S gene is 162 bp and the ITS2 approx...
A measurement system, which consisted of a CCD laser displacement sensor and two pulse stages, was constructed to obtain three-dimensional (3-D) surface data of Citrus fruit. Fruits of 58 species of three specimens each were measured. By expanding the data measured in a series of spherical harmonic functions, a set of expansion coefficients to characterize the object shape was obtained. The data was...
Reactions of 12 differential cultivars to 60 isolates of Colletotrichum lindemuthianum confirmed the presence of the gamma race in Asturias (North of Spain). In addition, one new race was identified as delta-mutant. The new binary nomenclature system identify the gamma race as race 38 and the delta-mutant race as race 7. A total of 40 germplasm lines which included 32 CIAT bean accessions and 8local...
To establish a plant regeneration system from embryogenic callus derived from mature rice embryos, the addition of aminoacids and the effect of two macronutrient solutions MSD and N6D to the basal callus induction medium was tested in three Spanish varieties, Senia, Tebre and Bahia. Aminoacids enhanced the production of embryogenic callus in Tebre and Senia whereas in the case of Bahia, embryogenic...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.