Dormancy in peppers

Randle, William M.; Honma, S.

doi:10.1016/0304-4238(81)90074-1

Cited by 23 publications

(14 citation statements)

References 8 publications

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“…Pepper seeds occasionally exhibit dormancy, but this is genotypedependent (Randle and Honma, 1981;Lakshmanan and Berke, 1998). A dry seed alter-ripening treatment of 21 days at 25_C in the dark has been shown to increase seed germination in lines exhibiting dormancy (Randle and Honma, 1981;Ingham et al, 1993).…”

Section: Seed Development Harvest and Storagementioning

confidence: 99%

“…A dry seed alter-ripening treatment of 21 days at 25_C in the dark has been shown to increase seed germination in lines exhibiting dormancy (Randle and Honma, 1981;Ingham et al, 1993). Pepper seeds may be stored at 25_C in sealed containers for one year with only a 6-12% decrease in percent germination (Thanos, Georghiou, and Passam, 1989).…”

Section: Seed Development Harvest and Storagementioning

confidence: 99%

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Hybrid Seed Production inCapsicum

Berke

1999

Journal of New Seeds

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While ~20 Capsicum species are recognized, Capsicum annuum is the predominant species cultivated, encompassing both hot and sweet peppers. Heterosis has been documented in hot and sweet peppers, and hybrids are gaining increasing popularity among farmers throughout the world. Producing high-quality hybrid pepper seeds requires careful management of the parental lines, skilled labor to make the cross-pollinations, and proper processing of the resulting seeds. The use of genic and cytoplasmic-genic male sterility is increasing in order to decrease the cost of hybrid seed production. Molecular markers are increasingly being used to check the purity of hybrid seeds. Most hybrid seed production occurs in countries with cheap, skilled labor, such as China, India, and Thailand. [Article copies available for a fee from The Haworth Document Delivery Service: 1-800-342-9678. E-mail address: getinfo@haworthpressinc.com ]

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Section: Seed Development Harvest and Storagementioning

confidence: 99%

Section: Seed Development Harvest and Storagementioning

confidence: 99%

Hybrid Seed Production inCapsicum

Berke

1999

Journal of New Seeds

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“…This result overlaps with Randle et al (1981) who stated that, the seed of pepper completes its physiological maturity in a rest period ranging from one to six weeks after the fruits were harvested, depending on the type of pepper.…”

Section: Conclusionesmentioning

confidence: 49%

“…Este resultado coincide parcialmente con Randle et al (1981) quienes mencionan que la semilla de chile completa su madurez fisiológica en un período de reposo que varía de una a seis semanas después de que los frutos fueron cosechados, dependiendo del tipo de chile.…”

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Evaluación de técnicas de emasculación y maduración de fruto para la producción de semilla en chile (Capsicum annuum L.)

García-Tierrablanca

Raya-Pérez

Covarrubias-Prieto

et al. 2018

Remexca

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ResumenEl objetivo de este trabajo fue comparar dos técnicas de emasculación para la obtención de semilla híbrida de chile. Se utilizaron dos genotipos de chile Jalapeño: Euforia e Invicto y dos genotipos de chile Bell: Canon y Dársena. Para la emasculación química se usaron soluciones de etanol. Con etanol al 47.5% (v/v) durante 10 s en los genotipos de chile jalapeño, dañó en grado intermedio 80% de las flores; la inmersión durante 30 s dañó al 60% de las flores. El tratamiento de 45 s infligió daño muy severo en 100% de las flores. La inmersión en etanol al 50% (v/v) durante 5 y 10 s dañó menos de 60% de las flores de "Euforia" e "Invicto". El daño causado en el botón floral de genotipos de chile Bell, con etanol al 50% (v/v) durante 5 s fue de 52% y los frutos produjeron 235 semillas. Con la inmersión a 10 s se observó que 68% de las flores no mostró daños y produjeron 304 semillas por fruto. La emasculación manual produjo frutos con 170 semillas. La extracción de semillas se realizó a diferentes tiempos de cosecha del fruto postfecundación: 30, 45 y 60 días. La emasculación manual fue más eficiente para obtener semillas viables. El estadio rojo de maduración resultó el mejor para asegurar la calidad y rendimiento de la semilla.Palabras clave: amarre de fruto, emasculación química, floración, híbrido. AbstractThe aim of this study was to compare two techniques of emasculation for obtaining hybrid seed of pepper. We used two kinds of peppers: Euforia and Invicto and two genotypes of pepper Bell: Canon and Dársena. Manual emasculation was more efficient for viable seeds. Red maturation stage was to ensure the best quality and seed yield.

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“…The start of the monsoon also triggers the germination of seeds produced in the previous year. Although seed dormancy has been reported for the species and this particular variety (Randle & Honma 1981), our experience planting thousands of chiltepin seeds at the University of Washington glasshouses is that chiltepins from Tumacacori imbibe water easily and have nearly 100% germination rates 1 month after planting (Carlo, Tewksbury & Del Rio 2009). Fruits start ripening early in October and persist on bracts unless removed by birds through the fall and most of the winter months.…”

Section: H I L T E P I N N a T U R A L H I S T O R Ymentioning

confidence: 99%

Directness and tempo of avian seed dispersal increases emergence of wild chiltepins in desert grasslands

Carlo

Tewksbury

2013

Journal of Ecology

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Summary1. Seed dispersal is thought to be unpredictable and outside a plant's control. But directed seed dispersal by mutualistic birds can increase probabilities of germination and survival by the non-random deposition of seeds in suitable microhabitats. 2. In the Sonoran Desert grasslands of southern Arizona (USA), bird-dispersed wild chiltepin peppers (Capscium annuum var. glabriusculum) grow in non-random association under bird-dispersed nurse trees and shrubs that serve as perches. We tested the hypothesis that the pattern is maintained by directional avian seed-dispersal patterns. Alternatively, post-dispersal processes, such as differential seed predation and seedling mortality, could create the associations. 3. For 3 years, we sampled the bird-generated seed rain under desert trees in four chiltepin subpopulations, comparing seed dispersal into microhabitats of fleshy-fruited trees and non-fleshy-fruited trees. Celtis pallida (fleshy-fruited) and Prosopis vellutina (non-fleshy-fruited) trees accounted for > 90% of the cover available for chiltepin recruitment. We tracked seedling emergence and survival in the two microhabitats and conducted a controlled seed-addition experiment to measure the effects of microhabitat, seed-addition density and temporal seed deposition on chiltepin emergence, growth and survival. 4. Approximately twice as many bird-dispersed seeds arrived at fleshy-fruited microhabitats compared with non-fleshy microhabitats. The numbers of seeds arriving and the number of seedlings emerging in microhabitats the following year were positively correlated. Survival of naturally emerged seedlings was similar at both microhabitats, but the seed-addition experiment revealed that more seeds are able to emerge under the denser foliage of fleshy-fruited microhabitats. The experiment also shows a significant effect of temporal deposition: when seeds were added gradually in a microhabitat (emulating repeated avian seed deposition under perches) instead of all at once, seedling emergence increased twofold on average. 5. Synthesis: Birds dispersed disproportionally high quantities of chiltepin seeds into favourable recruitment microhabitats, showing a case of directed dispersal. Birds also increase seedling emergence through the temporal deposition of seeds under fleshy-fruited trees, most likely as a result of reducing the odds of seed predation. A coupling between directed seed dispersal with classic facilitative plant-plant interactions leads to the formation of pattern and self-organization in a plant community.

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Dormancy in peppers

Cited by 23 publications

References 8 publications

Hybrid Seed Production inCapsicum

Hybrid Seed Production inCapsicum

Evaluación de técnicas de emasculación y maduración de fruto para la producción de semilla en chile (Capsicum annuum L.)

Directness and tempo of avian seed dispersal increases emergence of wild chiltepins in desert grasslands

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