Based on double-wavelength/double-beam ultraviolet-visible spectrophotometry and MAXR (maximum R2 improvement) regression procedure, a method for rapidly and synchronously determining the concentrations of chlorophyll a, chlorophyll b and the value of soil and plant analytzer development (SPAD) in maize leaves was introduced.

Morphology measure and 3D reconstruction of corn leaf based on machine vision;

Through close observation and research on the morphological formation, as well as growth rules of corn leaf, and combined with some knowledge in agriculture the mathematic model for changes on morphology in corn leaf was brought forward.

The mathematical model of maize blades was established by analyzing the actually measured data.

The results showed that:(ⅰ)in a specific range of water stress ,peroxidase activity in corn leaves increased with the decline of soil water content,however,enzymatic activity decreased when the water stress was overwhelmed;(ⅱ)there was variation of enzymatic activity of corn leaves grown in dry red soil and ve.

Effects of water stress on maize leaf photosynthesis;

a maize leaf cDNA library with a title of 2×105 pfu was established.

Relationship between changes of ethylene release and polyamines content in maize leaves and drought-tolerance in maize under water stress;

There were a few effects on the RWC of the maize leaves if the seedlings were treated with water stress during the early growth stage.