5 research outputs found
Pollen Viability in Taro (Colocasia esculenta (L.) Schott) in Cuba.
In taro, pollen availability or variability, and the number of clones that produce inflorescences, are not worldwide problems today. However, in Cuba, the appearance of inflorescence is critical, since the high-yielding accessions are not the ones that produce the inflorescences; it rarely or never happens, but when it does, pollen is not viable in most cases. Therefore, the aim of this paper is to evaluate fertility and viability of pollen in taro accessions (Colocasia esculenta). The germplasm accessions of the species, preserved at the Center for Tropical Crops Research (INIVIT) were evaluated during the 2015-2016 period. Staining by aceto-carmine glycerol jelly or pollen viability test was performed to 19 accessions selected for their inflorescences in field conditions. The result was expressed as the percentage with respect to the total number of pollen grains, using a descriptor of variations of pollen viability to determine if the accessions could be used as male parents in crop breeding programs. Five of the nineteen accessions evaluated were observed to produce viable pollen, which may be used as potential male and female progenitors in the genetic breeding program by species hybridation
Flowering of taro germplasm (Colocasia esculenta (L.) Schott) in Cuba
Research was done at the Center for Tropical Crop Research (INIVIT), to evaluate inflorescence of taro germplasm (104 accessions) in Cuba´s climatic conditions. Sampling was made every 7 days in the 2013-2014 period to evaluate inflorescence; accessions were characterized according to flowering parameters. The results showed that natural flowering by the 26-accession sample (25%), was observed to early blossom from July to October in 18 accessions (69.2%). Increased temperature and relative humidity lasted until November, when inflorescence ends
Pollen Viability in Taro (Colocasia esculenta (L.) Schott) in Cuba
In taro, pollen availability or variability, and the number of clones that produce inflorescences, are not worldwide problems today. However, in Cuba, the appearance of inflorescence is critical, since the high-yielding accessions are not the ones that produce the inflorescences; it rarely or never happens, but when it does, pollen is not viable in most cases. Therefore, the aim of this paper is to evaluate fertility and viability of pollen in taro accessions (Colocasia esculenta). The germplasm accessions of the species, preserved at the Center for Tropical Crops Research (INIVIT) were evaluated during the 2015-2016 period. Staining by aceto-carmine glycerol jelly or pollen viability test was performed to 19 accessions selected for their inflorescences in field conditions. The result was expressed as the percentage with respect to the total number of pollen grains, using a descriptor of variations of pollen viability to determine if the accessions could be used as male parents in crop breeding programs. Five of the nineteen accessions evaluated were observed to produce viable pollen, which may be used as potential male and female progenitors in the genetic breeding program by species hybridation
Floración del germoplasma de malanga isleña (Colocasia esculenta (L.) Schott) en Cuba
Con el objetivo de evaluar la emisión de inflorescencias en el germoplasma de malanga isleña (104 accesiones) en las condiciones climáticas de Cuba, se desarrolló una investigación en el Instituto de Investigaciones de Viandas Tropicales (INIVIT). Durante los años 2013-2014 se realizaron muestreos cada 7 días para evaluar emisión de inflorescencias, se caracterizaron las accesiones de acuerdo con los descriptores relacionados con las inflorescencias. Los resultados apuntan a la floración natural del de 26 accesiones (25 %), de ellas 18 (69,2%) florecen precozmente en los meses de julio hasta octubre, en los que hay un incremento de temperatura y la humedad relativa período a partir del cual se reduce la emisión de inflorescencias hasta noviembre cuando culmina el proceso de floración.Flowering of Malanga isleña germplasm (Colocasia esculenta (L.) Schoot in Cuba ABSTRACTIn order to evaluate the emission of inflorescences in the Malanga isleña germplasm (104 accessions) in the climatic conditions of Cuba, an investigation was conducted in the Research Institute of Tropical Root and Tubers Crops (INIVIT). During the years 2013-2014, were sampled every 7 days to evaluate emission of inflorescences, accessions were characterized according to the descriptors related to the inflorescences. The results point to the natural flowering of 26 accessions (25%), of which 18 (69.2%) bloom early in the months of July to October, in which occurs an increase in temperature and relative humidity, period from which the inflorescences emission is reduced until November when the flowering process ends
Floración del germoplasma de malanga isleña (Colocasia esculenta (L.) Schott) en Cuba
RESUMEN
Con el objetivo de evaluar la emisión de inflorescencias en el germoplasma de malanga isleña (104 accesiones) en las condiciones climáticas de Cuba, se desarrolló una investigación en el Instituto de Investigaciones de Viandas Tropicales (INIVIT). Durante los años 2013-2014 se realizaron muestreos cada 7 días para evaluar emisión de inflorescencias, se caracterizaron las accesiones de acuerdo con los descriptores relacionados con las inflorescencias. Los resultados apuntan a la floración natural del de 26 accesiones (25 %), de ellas 18 (69,2%) florecen precozmente en los meses de julio hasta octubre, en los que hay un incremento de temperatura y la humedad relativa período a partir del cual se reduce la emisión de inflorescencias hasta noviembre cuando culmina el proceso de floración.
Flowering of Malanga isleña germplasm (Colocasia esculenta (L.) Schoot in Cuba
ABSTRACT
In order to evaluate the emission of inflorescences in the Malanga isleña germplasm (104 accessions) in the climatic conditions of Cuba, an investigation was conducted in the Research Institute of Tropical Root and Tubers Crops (INIVIT). During the years 2013-2014, were sampled every 7 days to evaluate emission of inflorescences, accessions were characterized according to the descriptors related to the inflorescences. The results point to the natural flowering of 26 accessions (25%), of which 18 (69.2%) bloom early in the months of July to October, in which occurs an increase in temperature and relative humidity, period from which the inflorescences emission is reduced until November when the flowering process ends