Appearance of the unexpected triploids in the hybrid progeny between lettuce, lactuca sativa and its wild relatives, l. Based on our results, it is suggested that cassia fistula has strong allelopathic potential and may serve as a potential candidate for using its allelopathic potentials in weed control strategies. Red leaf lettuce is a sweet and very delicately textured and flavored lettuce. The species is hermaphrodite has both male and female organs and. Plant in the spring or fall when temperatures are still cool lettuce bolts in warm. Using reclaimed water to irrigate food crops presents an exposure pathway for persistent organic contaminants such as perfluoroalkyl acids pfaas to enter the human food chain. Nutritional value, bioactive compounds and health benefits. Organic fertilizer effect on lettuce lactuca sativa l. Lettuce lactuca sativa is a valuable crop in the united states and worldwide. Effects of organic fertilizers on growth, yield, quality and sensory evaluation of red lettuce lactuca sativa l. Lettuce lactuca sativa is an annual plant of the daisy family, asteraceae.
It is thought most likely to have originated from a progenitor similar to l. It forms within the genus lactuca a somewhat isolated genetic compatibility group with three wild species that also have nine pairs of chromosomes, l. Pilot study of the efficacy and safety of lettuce seed oil. An uptake study was carried out to assess the potential human exposure to perfluorinated alkyl acids pfaas through the ingestion of vegetables. Objective description of variety lettuce lactuca sativa. Effects of organic fertilizers on growth, yield, quality. It also serves as an important reference species for research on the compositae, one of the most diverse and successful families of angiosperm plants. Lettuce lactuca sativa l overview lettuce lactuca sativa l. Xxvii international horticultural congress ihc2006.
The effects of biochar and its combination with compost on. Pdf chemical constituents from seeds of lactuca sativa. It is cultivated as leaf vegetable sometimes for its seeds and stem. It is maist eften growed as a leaf vegetable, but whiles for its stem an seeds. Previous studies have recorded a high prevalence of intestinal parasites in lettuce lactuca sativa l. It is in flower from july to august, and the seeds ripen from august to september.
Red leaf lettuce, health benefits and nutritional value. Wild lettuce commonly refers to the wildgrowing relatives of common garden lettuce. Lettuce lactuca sativa was grown in pfaaspiked nutrient solutions at four different concentrations, ranging from 10 ngl to 10. Traditionally, it is wellknown for its use as folk remedy for inflammation, pain, stomach problems including indigestion and lack of appetite. Firstly it was cultivated by ancient egyptians who turned it from a weed and seeds were used for producing.
The largest producer of lettuce in the world is china, which produces mainly a stem lettuce l. The focus of modern lettuce breeding objectives is to improve horticultural characteristics such as quality, resistance to early bolting and breeding for resistance to pests and diseases. The genome size has been estimated by flow cytometry to be 2. Allelopathic potential of cassia fistula against lactuca. Please follow the upov test guidelines for lettuce tg0 when collecting data. Chemical constituents from seeds of lactuca sativa article pdf available in chemistry of natural compounds 484.
Lettuce facts, health benefits and nutritional value. Fresh leaves are an excellent source of several vitamin a and beta carotenes as well as a rich source of vitamin k, vitamin c, and folates, while also containing lots of minerals like iron, calcium, magnesium, and potassium, which are very essential for body metabolism. Gardeners can choose looseleaf varieties that do not form heads or grow iceberg lettuces that form a head of tightly overlapping leaves. Lactuca sativa is further characterized by a yellow corolla, white pappus, involucral bracts erect in fruit, and a flat cypsela body that has 5 to 9nerved faces, the body terminated by an elongate, filiform beak. It also exhibited significant analgesic and antiinflammatory activities. Lettuce lactuca sativa is a member of the asteraceae family and is one of the most important salad crops leafy vegetable which is grown globally with the united states being the largest world. It is a valuable dietary source of vitamin k, e and c as well as carotenoids. Effects of nitrogen source on growth, lactuca sativa l. Flowering stems erect, slightly angular, medullary, green to yellow to whitish, glabrous, robust, densely leafy, branched in upper half. Lettuce lactuca sativa is an annual plant o the daisy faimily, asteraceae. Effects of nitrogen source on growth, nutrition, photosynthetic rate and nitrogen metabohsm of mycorrhizal and phosphorusfertihzed plants of lactuca sativa l. Lactuca sativa lettuce, garden lettuce pfaf plant database.
It has been in use in folk medicine since ancient times as both an appetite stimulant and as an aid to sleep. Application of the trap technique to lettuce lactuca. Lettuce diseases and pests, description, uses, propagation. How to grow lettuce lactuca sativa lettuce is an ideal crop for beginner growers and seed savers alike. A rapid and efficient in vitro regeneration system for. The lettuce plant can vary greatly in size, shape and leaf type but generally, the leaves of the plant form a dense head or loose rosette. It is most often grown as a leaf vegetable, but sometimes for its stem and seeds. Lactuca sativa is an annual plant belonging to daisy family asterceae. Volatile organic compounds stimulate plant growing and. This greenhouse study used reclaimed water augmented with varying concentrations 0. Tissue culture applications in lettuce lactuca sativa l. Naira, a bioactive natural products and phytoceuticals, department ofhorticulture, 173 national food safety and toxicology center, michigan state university, east lansing, mi 48824, usa.
Lactuca, commonly known as lettuce, is a genus of flowering plants in the daisy family, asteraceae. Lettuce, lactuca sativa, is a leafy herbaceous annual or biennial plant in the family asteraceae grown for its leaves which are used as a salad green. The record derives from tica data supplied on 20120211 which reports it as an accepted name record b4e03b98ee4e40129ec0828429990e8e with original publication details. Lettuce is maist eften uised for salads, awtho it is an aa seen in ither kinds o fuid, such as soups, sandwiches an wraps. Few salad vegetables exceed lettuce in popularity, and you should have little difficulty in growing it. Soil salinity increased linearly with increasing salinity of irrigation water. In vitro evaluation of red and green lettuce lactuca. Perfluoroalkyl acid uptake in lettuce lactuca sativa and. Uptake of perfluorinated alkyl acids by hydroponically. Lettuce is most often used for salads, although it is also seen in other kinds of food, such as soups, sandwiches and wraps.
Previously, considerable pharmacological studies have. In vitro evaluation of red and green lettuce lactuca sativa for functional food properties vanisree mulabagala, mathieu ngouajiob, ajay nairb, yanjun zhangc, aditya l. Keane, in genetic improvement of vegetable crops, 1993. The common head and leaf lettuces of home gardens and commerce are derived from lactuca sativa. Evidence from egyptian tomb paintings indicates that it was cultivated before 4500 bc. Lactuca sativa garden lettuce is a popular salad herb. The genus includes at least 50 species, distributed worldwide, but mainly in temperate eurasia its bestknown representative is the garden lettuce lactuca sativa, with its many varieties. Growth, soil properties, and soil microbial activity and abundance dalilatrupiano,1 claudiacocozza,1 silviabaronti,2 carlaamendola,1 francescoprimovaccari,2 giuseppelustrato,1 saradilonardo,2 francescafantasma,1 robertotognetti,1 andgabriellastefaniascippa1. Eleven perfluorinated carboxylic acids pfcas and three perfluorinated sulfonic acids pfsas were analyzed. Starr1503260889 lactuca sativa several varieties in hydroponics greenhouse with kimtown sand islandmidway atoll 24640303483. Rosette leaves oblong to obovate or elliptic or ovate, 5. Lactuca sativa was found more sensitive to the applied allelopathic stress of c. Success in producing a steady supply of fresh, crisp leaves, rich in vitamin a, depends to a great extent upon an understanding of the habits of this plant.
Vick1 1usdaars, northern crop science laboratory, 7 north 18th street, fargo, nd 58105, usa. Prevalence of contamination by intestinal parasites in. This cylindricallyhearted lettuce known to the romans as cappadocian lettuce is now called roman lettuce or more commonly, romaine. Romaine is the most upright growing of the four major types of lettuce.
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