Ecological studies on the common beans

Genetic diversity analysis of common beans based on molecular markers

A core collection of the common bean (Phaseolus vulgaris L.), representing genetic diversity in the entire Mexican holding, is kept at the INIFAP (Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias, Mexico) Germplasm Bank. After evaluation, the genetic structure of this collection (200 accessions) was compared with that of landraces from the states of Oaxaca, Chiapas and Ve...

Phenotyping common beans for adaptation to drought

Common beans (Phaseolus vulgaris L.) originated in the New World and are the grain legume of greatest production for direct human consumption. Common bean production is subject to frequent droughts in highland Mexico, in the Pacific coast of Central America, in northeast Brazil, and in eastern and southern Africa from Ethiopia to South Africa. This article reviews efforts to improve common bean...

Studies on the Common Cold

1. The upper respiratory tract is sterile at birth. 2. In the first 2 weeks of life the infant acquires a basal flora comparable to that of adults except that the potential pathogens are absent. 3. During the ensuing months the potential pathogens may appear without giving rise to symptoms and by 8 months the infant's flora is entirely comparable to the adult's. 4. There is no evidence of a spe...

Relationships among the seed yield from small and large plots in common beans

On Coastal Ecological Characterization Studies

technical assistance services are based on an analysis o f t h e issues a determination o f the decisionmakers involved and t h e i r i n f o r m a t i o n needs, and an evaluation o f the s t a t e o f the a r t t o i d e n t i f y information gaps and t o determine p r i o r i t i e s. This i s a strategy t h a t w i l l ensure t h a t the products produced and disseminated are t i m e l y an...