M. Aulicino - Academia.edu (original) (raw)
Papers by M. Aulicino
New Zealand Journal of Botany, 2002
Genetic and environmental components were analysed in 32 Argentinian populations of Bromus cathar... more Genetic and environmental components were analysed in 32 Argentinian populations of Bromus catharticus. The research was based on 39 vegetative and reproductive characters. Constancy (r c) and heritability (h 2) ratios were calculated. ANOVAS showed differences between populations for 14 traits, most of them reproductive. Total phenotypic variation was mostly due to the environmental component. Microfloral attributes showed the highest values of r c and h 2. The traits average length of the spikelets (LS), average number of florets per spikelet (NFS), and lemma length (LL), which simultaneously reach r c values higher than 1 and h 2 values higher than 0.60, could be considered useful in systematic studies. Leaf, stem, and some reproductive characters, linked to propagule production, had plastic responses. However, traits associated with size and shape of propagules and spikelets remained constant. Results suggest that a double strategy is operating: plasticity in some traits (to give greater adaptability), and constancy in other traits related to species stability that are of systematic significance.
New Zealand Journal of Botany, 2002
Genetic and environmental components were analysed in 32 Argentinian populations of Bromus cathar... more Genetic and environmental components were analysed in 32 Argentinian populations of Bromus catharticus. The research was based on 39 vegetative and reproductive characters. Constancy (r c) and heritability (h 2) ratios were calculated. ANOVAS showed differences between populations for 14 traits, most of them reproductive. Total phenotypic variation was mostly due to the environmental component. Microfloral attributes showed the highest values of r c and h 2. The traits average length of the spikelets (LS), average number of florets per spikelet (NFS), and lemma length (LL), which simultaneously reach r c values higher than 1 and h 2 values higher than 0.60, could be considered useful in systematic studies. Leaf, stem, and some reproductive characters, linked to propagule production, had plastic responses. However, traits associated with size and shape of propagules and spikelets remained constant. Results suggest that a double strategy is operating: plasticity in some traits (to give greater adaptability), and constancy in other traits related to species stability that are of systematic significance.
Variation in genome size of 24 populations belonging to 11 NW Patagonian species of Berberis was ... more Variation in genome size of 24 populations belonging to 11 NW Patagonian species of Berberis was analysed as a function of the environment and geographical location. The variation showed three levels of discontinuity, two of which corresponded to diploid species (2n 28) while the third corresponded to polyploid species (2n 56). Diploids with DNA content ranging from 1. 463 pg to 1. 857 pg included Berberis cabrerae, B. chillanensis, B. montana, B. serrato-dentata and B. bidentata. Diploids with DNA content ranging from 2. 875 pg to 3. 806 pg included B. linearifolia, B. darwinii, B. parodii and B. empetrifolia. The genome size of the polyploid species B. buxifolia and B. heterophylla ranged from 5. 809 pg to 6. 844 pg. Principal component analysis (PCA) was applied to represent the variability of environmental conditions. The eigenvectors of the principal component axes showed that PC1 discriminates the populations according to rainfall, types of vegetation and geomorphology; altitude and latitude, on the other hand, contribute to PC2 and PC3, respectively. From these results it is concluded: (1) that diploids with lower DNA content grow in high-elevation sites having greater rainfall but lower water availability; (2) diploids with higher DNA content are associated with half-elevation forests where the vegetative period is longer, the water availability is greater and the temperatures are higher; and (3) the distribution pattern of polyploids is considerably wider than that of diploids, which are geographically and ecologically restricted to forest areas. These results suggest that the C-value plays an important role in the ability of the species to adapt to dierent growing conditions. # 2000 Annals of Botany Company
Field Crops Research, 2015
American Journal of Plant Sciences, 2012
The purpose of this research was to evaluate the nodulation potential of 31 Argentinean soybean c... more The purpose of this research was to evaluate the nodulation potential of 31 Argentinean soybean commercial cultivars. Those with the highest nodulation capacity developed twice the amount of nodules than the low nodulating ones, which is the variation contained in soybean genotypes. Furthermore, this was not due to bacterial promiscuity, since the response was independent of the bradyrhizobia strain inoculated. The ability of cultivars to develop a larger number and biomass of nodules was unrelated with the maturity group they belong to and also was not a response to quorum sensing effects. Our results suggest that breeding programs can be aimed at improving the nodulation capacity of soybean and that cultivars from different maturity groups can be a source of nodulation QTLs.
La cebadilla criolla (Bromus catharticus Vahl.) es una forrajera importante de amplia difusión en... more La cebadilla criolla (Bromus catharticus Vahl.) es una forrajera importante de amplia difusión en la pampa húmeda. Potencialmente puede ser sembrada en una extensa zona. El objetivo de este trabajo fue determinar la magnitud y naturaleza de la interacción genotipo-ambiente para el rendimiento de materia seca, empleando nueve líneas experimentales y tres testigos comerciales ensayados en nueve ambientes. Para analizar los datos obtenidos se usó el método de efectos principales aditivos y de interacción multiplicativa (AMMI). La prueba de F mostró significación para el primer y segundo eje del ACP de la interacción. El AMMI1 permitió detectar un patrón de comportamiento ambiental determinado por el número de cortes. Los ambientes donde se efectuaron tres cortes contribuyeron en mayor medida a la interacción genotipo × ambiente y tuvieron rendimientos altos. Esta interpretación biológica tiene una aplicación directa en planes de mejoramiento y selección, recomendándose siembras tempranas para conseguir un mayor número de cortes y mejores rendimientos y estudiar el comportamiento de líneas o genotipos en estas condiciones ambientales óptimas.
Genetic Resources and Crop Evolution, 2001
The genetic diversity of 10 commercial cultivars of common beans, developed in Northern Argentina... more The genetic diversity of 10 commercial cultivars of common beans, developed in Northern Argentina was analyzed based on RAPD markers. Sixteen primers were assayed and among them only 4 showed polymorphisms. A similarity matrix was generated by applying three different association coefficients, Simple Matching, Jaccard and Dice. By the UPGMA method dendrograms were generated and also the principal coordinate analysis
… of Botany, 2000
Variation in genome size of 24 populations belonging to 11 NW Patagonian species of Berberis was ... more Variation in genome size of 24 populations belonging to 11 NW Patagonian species of Berberis was analysed as a function of the environment and geographical location. The variation showed three levels of discontinuity, two of which corresponded to ...
Soil and Tillage Research, Dec 1, 2006
Microbial diversity might be a good indicator of ecosystem disturbance and functioning. We determ... more Microbial diversity might be a good indicator of ecosystem disturbance and functioning. We determined the effect of soil disturbances, such as N fertilization and tillage management, on soil microbial communities in a Typic Argiudoll of the El Salado river basin (Argentina). Microbial activity and substrate utilization provided a metabolic fingerprint of the soil microbial community. Univariate and multivariate analyses were
New Zealand Journal of Botany, 2002
Genetic and environmental components were analysed in 32 Argentinian populations of Bromus cathar... more Genetic and environmental components were analysed in 32 Argentinian populations of Bromus catharticus. The research was based on 39 vegetative and reproductive characters. Constancy (r c) and heritability (h 2) ratios were calculated. ANOVAS showed differences between populations for 14 traits, most of them reproductive. Total phenotypic variation was mostly due to the environmental component. Microfloral attributes showed the highest values of r c and h 2. The traits average length of the spikelets (LS), average number of florets per spikelet (NFS), and lemma length (LL), which simultaneously reach r c values higher than 1 and h 2 values higher than 0.60, could be considered useful in systematic studies. Leaf, stem, and some reproductive characters, linked to propagule production, had plastic responses. However, traits associated with size and shape of propagules and spikelets remained constant. Results suggest that a double strategy is operating: plasticity in some traits (to give greater adaptability), and constancy in other traits related to species stability that are of systematic significance.
New Zealand Journal of Botany, 2002
Genetic and environmental components were analysed in 32 Argentinian populations of Bromus cathar... more Genetic and environmental components were analysed in 32 Argentinian populations of Bromus catharticus. The research was based on 39 vegetative and reproductive characters. Constancy (r c) and heritability (h 2) ratios were calculated. ANOVAS showed differences between populations for 14 traits, most of them reproductive. Total phenotypic variation was mostly due to the environmental component. Microfloral attributes showed the highest values of r c and h 2. The traits average length of the spikelets (LS), average number of florets per spikelet (NFS), and lemma length (LL), which simultaneously reach r c values higher than 1 and h 2 values higher than 0.60, could be considered useful in systematic studies. Leaf, stem, and some reproductive characters, linked to propagule production, had plastic responses. However, traits associated with size and shape of propagules and spikelets remained constant. Results suggest that a double strategy is operating: plasticity in some traits (to give greater adaptability), and constancy in other traits related to species stability that are of systematic significance.
Variation in genome size of 24 populations belonging to 11 NW Patagonian species of Berberis was ... more Variation in genome size of 24 populations belonging to 11 NW Patagonian species of Berberis was analysed as a function of the environment and geographical location. The variation showed three levels of discontinuity, two of which corresponded to diploid species (2n 28) while the third corresponded to polyploid species (2n 56). Diploids with DNA content ranging from 1. 463 pg to 1. 857 pg included Berberis cabrerae, B. chillanensis, B. montana, B. serrato-dentata and B. bidentata. Diploids with DNA content ranging from 2. 875 pg to 3. 806 pg included B. linearifolia, B. darwinii, B. parodii and B. empetrifolia. The genome size of the polyploid species B. buxifolia and B. heterophylla ranged from 5. 809 pg to 6. 844 pg. Principal component analysis (PCA) was applied to represent the variability of environmental conditions. The eigenvectors of the principal component axes showed that PC1 discriminates the populations according to rainfall, types of vegetation and geomorphology; altitude and latitude, on the other hand, contribute to PC2 and PC3, respectively. From these results it is concluded: (1) that diploids with lower DNA content grow in high-elevation sites having greater rainfall but lower water availability; (2) diploids with higher DNA content are associated with half-elevation forests where the vegetative period is longer, the water availability is greater and the temperatures are higher; and (3) the distribution pattern of polyploids is considerably wider than that of diploids, which are geographically and ecologically restricted to forest areas. These results suggest that the C-value plays an important role in the ability of the species to adapt to dierent growing conditions. # 2000 Annals of Botany Company
Field Crops Research, 2015
American Journal of Plant Sciences, 2012
The purpose of this research was to evaluate the nodulation potential of 31 Argentinean soybean c... more The purpose of this research was to evaluate the nodulation potential of 31 Argentinean soybean commercial cultivars. Those with the highest nodulation capacity developed twice the amount of nodules than the low nodulating ones, which is the variation contained in soybean genotypes. Furthermore, this was not due to bacterial promiscuity, since the response was independent of the bradyrhizobia strain inoculated. The ability of cultivars to develop a larger number and biomass of nodules was unrelated with the maturity group they belong to and also was not a response to quorum sensing effects. Our results suggest that breeding programs can be aimed at improving the nodulation capacity of soybean and that cultivars from different maturity groups can be a source of nodulation QTLs.
La cebadilla criolla (Bromus catharticus Vahl.) es una forrajera importante de amplia difusión en... more La cebadilla criolla (Bromus catharticus Vahl.) es una forrajera importante de amplia difusión en la pampa húmeda. Potencialmente puede ser sembrada en una extensa zona. El objetivo de este trabajo fue determinar la magnitud y naturaleza de la interacción genotipo-ambiente para el rendimiento de materia seca, empleando nueve líneas experimentales y tres testigos comerciales ensayados en nueve ambientes. Para analizar los datos obtenidos se usó el método de efectos principales aditivos y de interacción multiplicativa (AMMI). La prueba de F mostró significación para el primer y segundo eje del ACP de la interacción. El AMMI1 permitió detectar un patrón de comportamiento ambiental determinado por el número de cortes. Los ambientes donde se efectuaron tres cortes contribuyeron en mayor medida a la interacción genotipo × ambiente y tuvieron rendimientos altos. Esta interpretación biológica tiene una aplicación directa en planes de mejoramiento y selección, recomendándose siembras tempranas para conseguir un mayor número de cortes y mejores rendimientos y estudiar el comportamiento de líneas o genotipos en estas condiciones ambientales óptimas.
Genetic Resources and Crop Evolution, 2001
The genetic diversity of 10 commercial cultivars of common beans, developed in Northern Argentina... more The genetic diversity of 10 commercial cultivars of common beans, developed in Northern Argentina was analyzed based on RAPD markers. Sixteen primers were assayed and among them only 4 showed polymorphisms. A similarity matrix was generated by applying three different association coefficients, Simple Matching, Jaccard and Dice. By the UPGMA method dendrograms were generated and also the principal coordinate analysis
… of Botany, 2000
Variation in genome size of 24 populations belonging to 11 NW Patagonian species of Berberis was ... more Variation in genome size of 24 populations belonging to 11 NW Patagonian species of Berberis was analysed as a function of the environment and geographical location. The variation showed three levels of discontinuity, two of which corresponded to ...
Soil and Tillage Research, Dec 1, 2006
Microbial diversity might be a good indicator of ecosystem disturbance and functioning. We determ... more Microbial diversity might be a good indicator of ecosystem disturbance and functioning. We determined the effect of soil disturbances, such as N fertilization and tillage management, on soil microbial communities in a Typic Argiudoll of the El Salado river basin (Argentina). Microbial activity and substrate utilization provided a metabolic fingerprint of the soil microbial community. Univariate and multivariate analyses were