Plant breeders have developed superior cultivars of a number of important crops. For example, traditional varieties of rice typically have many thin stalks, which can support relatively few seeds. Through selection techniques, rice yields can be…
Sequence of steps in crossing inbred plants and using the resulting single-crossed seed to produce double-crossed hybrid seed. (Credit: Crops Research Division, Agricultural Research Service, United States Department of Agriculture)
Fixed-time method for uncatalyzed reactions. (a) Variation of [P] as a function of time for different initial concentrations of [A]0. (b) Variation of amount of P formed at fixed time tf with initial concentration of A.
Variable-time method for uncatalyzed reactions. (a) Variation of [P] as a function of time for various initial concentrations of [A]0. (b) Variation of 1t[P]f required to reach a fixed value of product formed [P]f with initial concentration of A.