In CIAT, Centro Internacional de Agricultura Tropical, located
in Palmira, Colombia, a series of experiments were conducted to study
the biology and control of mudplantain (Heteranthera reniformis Ruiz
et Pavon), a member of Pontederiaceae family.
Mudplantain is a perennial aquatic plant which reproduces by both
seeds and stolons. It is...
Dimethyl sulfide, acetaldehyde, isobutyraldehyde, furan, 2-furaldehyde, 2-acetyl furan, and ethyl furoate were produced when pureed strawberries were heated to 120° C. for 30 minutes. Shorter heating periods were sufficient to produce the first three compounds. With the exception of acetaldehyde, none of the heat-induced compounds were detected in unheated, pureed...
The 3-5 year cyclical fluctuations in populations of many vole and lemming species have perplexed ecologists for many years. Numerous hypotheses have been proposed to explain microtine rodent cycles, including various aspects of social behavior. Microtine rodents commonly form kin groups composed of related females. Charnov and Finerty (1980) proposed...
Female and male mammals have different behavioral strategies for maximizing their reproductive success. Pregnancy and lactation obligate female mammals to provide greater parental investment than males; thus, females compete with each other for food and space to rear their offspring, while male mammals compete with each other for female mates....
The lentil strain of pea seedborne mosaic virus, PSbMV-L, was
distinguished from the standard isolates of PSbMV by a natural inoculum
reservoir in lentil seed and by separate resistance genes in Pisum
and Lens. PSbMV-L was intermediate in symptom severity between the
standard and New Zealand isolates of PSbMV.
Seed...
The effects of N and Zn treatments on growth and nutrient composition
of sweet cherry trees were investigated in greenhouse and
outdoor sand culture experiments. In these studies, one-year old
clonal F12-1 sweet cherry trees were grown in dithizone purified
nutrient solution consisting of three levels of N (3O, 80,...