Resultados de búsqueda - "sexuality"

Reproductive ecology and genetic variability in natural populations of the wild potato, Solanum kurtzianum por Marfil, Carlos Federico, Masuelli, Ricardo Williams

“…AFLP markers showed that the genetic variability is mainly present among plants within populations, indicating that in the sampled populations, sexual reproduction is more relevant than clonal multiplication (by tubers). …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

Malondialdehyde content as a potential biochemical indicator of tolerant Cenchrus ciliaris L. genotypes under heat stress treatment por Tommasino, Exequiel Arturo, Griffa, Sabrina Mariana, Grunberg, Karina, Ribotta, Andrea Noemi, Lopez Colomba, Eliana, Carloni, Edgardo José, Quiroga, Mariana Paola, Luna, Celina Mercedes

“…As part of a genetic improvement programme, four genotypes [Biloela (Bl), Americana (Am), Texas (Tx) and Sexual (Sx)] were categorized by tolerance to heat stress in a greenhouse experiment. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

Nest-departure behaviour of gynes and drones in the invasive yellowjacket Vespula germanica (Hymenoptera: Vespidae) por Martinez Von Ellrich, Andres, Rousselot, Natalia, Corley, Juan Carlos, Masciocchi, Maite

“…Using six observation colonies, we determined under field conditions the nest departure behaviour of sibling reproductives of the social wasp Vespula germanica (Hymenoptera: Vespidae). We determined that sexuals leave the nests definitively and detected asynchronous departure not fixed to a particular caste at a seasonal scale in some colonies, as gynes or drones delayed their departure as a function of the departure of the opposite sex, depending on the colony. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

Expression of internal reproductive barriers in a germplasm bank accession of the wild potato Solanum chacoense Bitter in three ex situ regeneration cycles por Poulsen Hornum, Anabela, Camadro, Elsa Lucila

“…Most of them are diploid and obligate outcrossers, with both sexual and asexual reproduction. Samples of natural populations are ex situ conserved as accessions in germplasm banks for basic and applied ends, and are regenerated when seed number, seed viability or both decrease. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

Molecular Assisted Selection for Pollination-Constant and Non-Astringent Type without Male Flowers in Spanish Germplasm for Persimmon Breeding por Blasco, Manuel, Gil-Muñoz, Francisco, Naval, María M., Badenes, María L.

“…Persimmon (Diospyros kaki Thunb) species is a hexaploid genotype that has a morphologically polygamous gyonodioecious sexual system. D. kaki bears unisexual flowers. The presence of male flowers resulted in the presence of seeds in the varieties. …”
Enlace del recurso
Enlace del recurso

Aspectos ecofisiológicos del cultivo de la guanábana por Barragán Quijano, Eduardo, Barreto Osorio, José Dairo, Miranda Lasprilla, Diego

“…Sobre la base de esta definición, en este documento se estudian, en primera instancia, los aspectos generales de la planta de guanábana contemplando fenología y morfología, floración, morfología floral, apertura floral, maduración sexual, polinización y fructificación. A continuación se analiza el ambiente en las zonas productoras tomando en consideración los requisitos del cultivo en cuanto a calidad de la tierra, aireación del suelo, condiciones de enraizamiento, niveles de acidez, textura del suelo y condiciones climáticas (altitud, temperatura, humedad relativa y precipitación) y se establece una clasificación, de las localidades productoras en el departamento del Tolima, por factores de aptitud. …”
Enlace del recurso

Un concepto nuevo en el levante de novillas para ganadería de leche. por Rubio Ramírez, Reynaldo, Pineda Morales, Jaime E.

“…Una alimentación balanceada en el levante, permite a las novillas alcanzar su madurez sexual a los 10 meses y obtener partos a los 2 años…”
Enlace del recurso

Estudios etiológicos y epidemiológicos de la mancha del guanábano Annona muricata L. en el Valle del Cauca. por Zárate Reyes, Rubén Dario, Hoyos P, Patricia

“…No se encontraron estructuras correspondientes al estado sexual del hongo. Los síntomas se reprodujeron 30 días despúes de la inoculación. …”
Enlace del recurso

Temperatura de germinación de semillas de anón (Annona squamosa L.) por Martínez M., Fabio Ernesto, Miranda, Diego, Magnitskiy, Stanislav

“…La propagación sexual del anón es el método mas utilizado por los productores en Colombia, sin embargo uno de los problemas del cultivo es la baja e irregular germinacion de las semillas. …”
Enlace del recurso

Variability of flowering sex and its effect on agronomic trait expression in white guinea yam por Iseki, K., Matsumoto, R., Olaleye, O., Shimizu, M., Asfaw, A.

“…The flowering date is the most important reason for the sexual differences in tuber yield. A high tuber yield was obtained when plants with the female phenotype flowered before tuber enlargement. …”
Enlace del recurso

Explaining the gender gap in profits among entrepreneurs in Malawi por Duval-Diop, Dominique, Heckert, Jessica, Lee, Jean, Seymour, Greg, Vaughn, Katherine

“…The female structural disadvantage can largely be attributed to female owners’ heightened perception of sexual hostility in the work environment and non-cognitive skills related to entrepreneurship (perseverance in challenging tasks and environments, optimism, and passion for work). …”
Enlace del recurso

Genetic diversity of rice false smut fungus, Ustilaginoidea virens and its pronounced differentiation of populations in North China por Zhou, Y.-L., Pan, Y.-J., Xie, X.-W., Zhu, L.H., Xu, J.L., Wang, S., Li, Z.K.

“…Our results suggested that the populations among different locations where sexual stage of the pathogen was rare to be found within ecological region were similar, and the variation of this pathogen has mainly arisen via asexual mechanisms. …”
Enlace del recurso

Exploiting interspecific conservation of male-specific genomic regions to develop markers for sex determination in catla (Labeo catla) and silver carp (Hypophthalmichthys molitrix) por Hamilton, Matthew G., Akhter, Md. Masud, Shanta, Sirajum Monira, Roy, Aashish Kumar, Rahman, Md. Mustafizur, Sarkar, Uzzal Kumar, Kamruzzaman, Md., Benzie, John A.H.

“…The identified markers showed strong potential for practical application in aquaculture, particularly for the quantification of sexual dimorphism in immature fish and identification of sex-reversed individuals, in addition to their use in genetic improvement programs.…”
Enlace del recurso

Exploiting interspecific conservation of male-specific genomic regions to develop markers for sex determination in catla (Labeo catla) and silver carp (Hypophthalmichthys molitrix) por Hamilton, Matthew, Akhter, Md, Shanta, Sirajum Monira, Roy, Aashish Kumar, Rahman, Md. Mustafizur, Sarkar, Uzzal Kumar, Kamruzzaman, Md., Benzie, John

“…The identified markers showed strong potential for practical application in aquaculture, particularly for the quantification of sexual dimorphism in immature fish and identification of sex-reversed individuals, in addition to their use in genetic improvement programs.…”
Enlace del recurso

Population structure of Phytophthora infestans collected from potatoes in Ecuador, Colombia, Peru, Bolivia and Uruguay por Izarra, M., Coca-Morante, M., Pérez, W., Sánchez, L., Gamboa, S., Valle, D., Cuarán, V., Guerra-Sierra, B., Kreuze, Jan F.

“…Late blight, a destructive disease affecting potatoes, is caused by the oomycete Phytophthora infestans and remains a critical threat worldwide. The potential for sexual reproduction in production areas near the Peru–Bolivia border remains high due to the historical presence of mating type A2 in Bolivia and the current presence of mating type A1 in Peru. …”
Enlace del recurso

Traditional banana diversity in Oceania: an endangered heritage por Kagy, V., Wong, M., Vandenbroucke, H., Jenny, C., Dubois, C., Ollivier, A., Cardi, C., Mournet, P., Tuia, V.S., Roux, N., Doležel, Jaroslav, Perrier, Xavier

“…It is concluded that the diffusion of Pacific starchy AAB bananas results from a series of introductions of triploids originating in New Guinea area from several sexual recombination events implying different genotypes of M. acuminata ssp. banksii. …”
Enlace del recurso

A parthenogenesis gene candidate and evidence for segmental allopolyploidy in apomictic brachiaria decumbens por Worthington, Margaret, Heffelfinger, Christopher, Bernal, Diana, Quintero, Constanza, Zapata, Yeny Patricia, Pérez, Juan Guillermo, Vega, José de, Miles, John W., Dellaporta, Stephen L., Tohme, Joseph M.

“…PsASGR-BABY BOOM-like (psASGR–BBML)-specific primer pair p779/p780 was in perfect linkage with the ASGR in the F1 mapping population and diagnostic for reproductive mode in a diversity panel of known sexual and apomict Brachiaria (Trin.) Griseb. and P. maximum Jacq. germplasm accessions and cultivars. …”
Enlace del recurso

Informal Seed systems and the management of gene flow in traditional agroecosystems: the case of cassava in Cauca, Colombia por Dyer, George, González, Carolina, Lopera, Diana Carolina

“…We quantify several management practices for cassava the first estimates of their kind for a vegetatively-propagated crop describe their demographic repercussions, and compare them to those of maize, a sexually-reproduced grain crop. We discuss the implications for gene flow, the conservation of cassava diversity, and the biosafety of vegetatively-propagated crops in centers of diversity. …”
Enlace del recurso

Expressed centromere specific histone 3 (CENH3) variants in cultivated triploid and wild diploid bananas (Musa spp.) por Muiruri, K.S., Britt, A., Amugune, N.O., Nguu, E.K., Chan, S., Tripathi, L.

“…The interactions may become more challenging if multiple CENH3 versions are introduced into the zygote as this can affect post-zygotic mitosis and ultimately sexual reproduction. Here, we characterize CENH3 variant transcripts expressed in cultivated triploid and wild diploid progenitor bananas. …”
Enlace del recurso

Pathogenic and genetic variability among Colletotrichum gloeosporioides isolates from different yam hosts in the agroecological zones in Nigeria por Abang, Mathew M., Asiedu, Robert, Hoffmann, P., Wolf, G.A., Mignouna, Hodeba D., Winter, S.

“…Consistent with the above findings, we observed for the first time the Glomerella teleomorph on anthracnose-infected yam plants in Nigeria, indicating that sexual recombination might play an important role in anthracnose epidemics on yam. …”
Enlace del recurso