Botanical Name : Brassica cernua
Species: B. juncea
Synonym :Brassica juncea (L.) Czern. subsp. juncea
Common Name : Chinese cabbage, pak choi, pakchoi, Pe-tsai, petsai, wong bok, wongbok, Chinese salad, Chou chinois (Fr), kapisi, kapeti ni jaina (Fiji), kapisi siaina (Tonga, Tuvalu),
Mustard greens, Indian mustard, Chinese mustard, Jie Cai (in Mandarin) or Kai Choi (in Cantonese), or leaf mustard is a species of mustard plant.
Habitat :Brassica cernua is native to Eastern Asia. Places in India where it grows are Andhra Pradesh, Assam, Karnataka, Kerala, Chhattisgarh, Gujarat, Jharkhand, Madhya Pradesh, Maharashtra, Meghalaya, Sikkim, Arunachal Pradesh, Orissa, Rajasthan, Tamilnadu, Punjab, Haryana, West Bengal, Uttarakhand and Uttar Pradesh.
Brassica cernua is a perennial, biennial, often grown as an annual herb.It is a succulent herb forming rosettes, of open or tight vegetative heads followed by flowering stalks reaching 20-50 cm in height. Leaves are succulent and light green.May be harvested after 40-60 or 50-90 days, depending on variety. (Eswaran) 25-45 days for leaves and 100-110 days for seeds.
The leaves are eaten fresh, boiled, fried, or fermented. Some varieties produce seeds that can be pressed for oil.
It can in the tropics be grown at elevations up to 1500 m, but at elevations below 500 m heading is less likely to occur. A difference of 5-6°C in day and night temperatures appears to increase the vigour of the plant. Temperatures below 16°C promote flowering, particularly in daylengths of 13 hours or more. Drought stress in the heading stage prevents head formation. It is easely damaged by high winds. Leaf yields between 5 and 70 t/ha or 0.5-7 kg/m? may be obtained depending on length of growing period, plant desity, environmental conditions and cultivars. Photosynthesis pathway C3.
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