This paper reports the chromosome number and karyotypes of 10 species of the genus Lactuca and its allied genera, of which 6 are reported for the first time.

They were found to belong to the genera Lactuca and Pterocypsela .

Study on anti-brown treatments of MP lettuce;

Effects of Salt Stress on Germination of Lettuce Seed and Growth of Seedling;

Allelopathy of Different Concentrations Hot Pepper Allelochemicals on Lettuce;

Using Agrobacterium vacuum infiltration method the plant bivalent expression vector pBI121 containing GUS as a report gene was transformed into lettuce(Lactuca sativa L.

The scanning electron microscope observation was given for the achenes of Lactuca sativa, L.

We observed major physiological and biochemical indicators and quality changes during storage of fresh-cut lettuce,by using different packaging materials,anti-browning agent and bacteriostatic agent for fresh lettuce.

The aim of this study was to investigate the effects of high oxygen modified atmosphere packaging on the quality of fresh-cut lettuce during storage.

Extraction of polyphenol from lettuce leaves and evaluation of the scavenging ability of polyphenol on superoxide anion and hydroxyl radical;

The mothod of extracting SOD from lettuce leaves with organ ic solven t and pillar-rayer-separate was reported the activity of SOD with the mothod of phrogauol s auto-oxide was alsostudied,and the activity of the SOD was 11 3.