Scientific name: Lactuca sativa L.
Bangla/local name: Not known
Taxonomic Position according to Cronquist (1981)
Kingdom : Plantae
Division : Magnoliophyta
Class : Magnoliopsida
Subclass : Asteridae
Order : Asterales
Family : Asterceae
Genus : Lactuca
Species : L. sativa
Botanical Description of Lettuce
Habit: Biennial herb, pubescent.
Root: Tap roots.
Stem: Erect or prostate
Leaf: Simple sessile, leaves are arranged as rosette
Flower: Inflorescence head or capitulate
Involucre bract: The head or capitulum are surrounded by a whorl of bracts called the involecre thus producing a flower cluster resembling a single flower.
Economic Importance: Used as salad and oil obtained from seeds are also useful. Lettuce leaves contain 94%, water; 1.4% protein, 2.9% carbohydrate and 0.2% fat in 100 gram fresh leaves. Each of 100 gram fresh lettuce leaves also contain 300-1500 I U carotene, 0.09 mg thiamine, 0.12 mg riboflavin, 0.4 mg niacin, 10 mg vitamin-C, 2 mg calcium and 2.0 iron (Rashid, 1999).
Table 1. Lettuce variety developed by BARI, Joydebpur, Bangladesh
|Sl. No.||Name of Variety||Developed by||Year of Release||Planting Time||View for Detail|
|Olericulture Division, HRC, Gazipur||2007||October- November||View for Detail|