Search Results
Preservation of genetic diversity is of paramount importance in germplasm. A method of collecting, storing, and organizing genetic material to include maximum variability and to minimize repetition within the collection is a “core collection.” To assist the National Plant Germplasm System in developing a core collection, or core subset of Capsicum germplasm, field evaluations were conducted from 1989 to 1993 at New Mexico State University. In determining how best to organize the core subsets, we believe the objectives of a Capsicum core subset should be to increase the efficiency of evaluation and thus the utilization of existing collections and to provide for a manageable and representative selection of available Capsicum germplasm for use in research and plant breeding. We are using a modified IBPGR Capsicum descriptor list to evaluate the collection, With these objectives in mind, we are suggesting the following approach to Capsicum core subsets. At least one accession of each Capsicum species is contained in the core. The most economically important species, C. annuum, represents the majority of accessions. Within C. annuum the core subsets are grouped by pod-type (ancho, bell, jalapeno, etc.). The pod-type is analogous to races in maize (Zea mays).
esculentum Mill.) et de poivron ( Capsicum annuum L.) cultivés sous de longues photopériodes. Thèse de Doctorat, Faculté des Études Supérieures, Université Laval, Ste-Foy, Québec, Canada Demers, D.A. Gosselin, A. 2002 Growing greenhouse tomato and sweet
’, ornamental pepper ( Capsicum annuum ) ‘Black Pearl’, and plumbago ( Plumbago auriculata ) irrigated with water at electrical conductivity (EC) of 0.8, 2.8, 4.0, 5.1, or 7.4 dS·m −1 (Expt. 2). Vertical bars represent se s. L and Q in legend parentheses
White’, ornamental millet ( Pennisetum glaucum ‘Jester’), pepper ( Capsicum annuum ‘Hot Long Red Thin Cayenne’), and zinnia ( Zinnia elegans ‘Zahara Fire’) were sown in 128-cell trays (14-mL individual cell volume) filled with a commercial soilless
and subsequent flowering. Materials and Methods Plant material. Seeds of geranium [ Pelargonium ×hortorum ‘Pinto Premium Salmon’ (‘PPS’) and ‘Ringo 2000 Deep Scarlet’(‘RDS’)], pepper ( Capsicum annuum ‘Long Red Slim Cayenne’), petunia ‘Single Dreams
Experiments were conducted from 1989 to 1991 to compare the effectiveness of various cultural techniques in reducing solar injury (SI) and increasing yield of bell pepper (Capsicum annuum var. annuum `California Wonder') in southern Oklahoma. Treatments included black plastic mulch, white plastic mulch, straw mulch, living rye, spunbonded polypropylene used as a plant canopy shade, and bare soil. Marketable yields from plots shaded with spunbonded polypropylene rowcovers were equal to or greater than those from other treatments each year. Two out of 3 years, plots with a black plastic soil mulch had marketable yields lower than those from other treatments. SI was reduced by rowcover shade.
The resistance of `Carolina Cayenne' (Capsicum annuum L.) to root-knot nematode Meloidogyne incognita (Kofoid & White) Chitwood races 1, 2, 3, and 4 was measured. Egg counts from roots were used to determine the plant's resistance to M. incognita. Few eggs were observed on `Carolina Cayenne' roots, whereas all races of M. incognita produced numerous eggs on the susceptible `NuMex R Naky' roots. The results indicated `Carolina Cayenne' is a source of resistance to all known races of M. incognita.
1 Research Geneticist, Vegetable Laboratory. To whom reprint requests should be addressed. 2 Research Geneticist, Florist and Nursery Crops Laboratory. Seeds of Capsicum annuum L. `KAU Cluster' and Indian C. annuum landraces were
During a natural field epidemic of curly top virus, accessions within five species of Capsicum were evaluated for resistance. Accessions were considered resistant if 0% to 25% of the individual plants were devoid of curly top virus symptoms. Resistance was found in three accessions each of C. annuum L. and C. frutescens L. and one accession each of C. chacoense Hunz. and C. chinense Jacq. The resistant C. annuum accessions were `Burpee Chiltepin', `NuMex Bailey Piquin', and `NuMex Twilight', while the C. frutescens resistant accessions were USDA-Grif 9322 from Costa Rica, PI 241675 from Ecuador and `Tabasco'. The resistant C. chacoense accession was PI 273419 from Argentina and the C. chinense resistant accession was USDA-Grif 9303 from Colombia.
Paprika pepper (Capsicum annuum var. annuum L., `Agridulce SIA') was direct-seeded on raised beds in double rows 0.35 cm apart. Plants were thinned within the row to establish densities ranging from 13,333 to >500,000 plants/ha. Yield of paprika pepper increased as plant density increased, but plant densities >200,000 plants/ha resulted in only small increases in yield. Fruit number and dry fruit weight/plant decreased with increasing plant populations, and weight/fruit decreased slightly. The increase in yield/ha as plant density increased was a result of increased numbers of fruits/ha. Pigment content (ASTA units) declined linearly as plant density increased, whereas moisture content of red fruits at harvest remained unaffected. Plant densities in the range of 150,000 to 200,000 plants/ha were optimal in terms of fruit yield and pigment content.