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Development new rice varieties in the coastlines of Mekong Delta, VietNam
07/09/2020 SCIENTIFIC RESEARCH 83
HATRI NEWS
International Journal of Environment, Agriculture and Biotechnology,
Development new rice varieties in the coastlines of Mekong Delta, VietNam
Nguyen Thi Lang1, Nguyen thi Hong Loan ,NguyenTrongPhuoc1, Le Hoang Phuong1,
Vo Hoai Chan
2,  Bui Chi Buu1
(1) High Agricultural Technology Research Institute for Mekong delta
Vietnam(HATRI)
(2) High Agricultural Technology  Center Ben Tre Province
 
Abstract
 
To increase productivity and improve quality, new rice varieties need to be salinity tolerance and  resistant to many kinds of insects, diseases, and high levels of nutrients, resistant to disadvantageous conditions, and promises to reduce using pesticides, chemical fertilizers. Great efforts have been focused on germplasm research to discover genes resistant to disease and insect, efficient in using salinity level with good grain quality and productivity. With the development of climate-resilient varieties, scaling up or dissemination of seeds is done by province, following the locality's is Winter-Spring( DongXuan Season)  and Summer – ( Wet season ). For instance, in the case of Winter-Spring crop, the plan of Mekong delta is to expand some lines such as HATRI 190, HATRI 192, HATRI 170 were developed that can yield 4-5 tons ha-1 under salt stress of 10.0 to 12.0 dS m-1,and are being out-scaled.Normally, this expansion initiative requires inclusion of key rice varieties, that is, local or extra varieties and promising varieties, all of which will be included in the plan for developing the rice sector for each province. Detail please see file
 
Keywords:  rice varieties, improve quality, salinity tolerance.
 
Table 1. Potential areas for expansion of salinity-tolerant varieties.
Province (District)
Yield Potential
 (tons/ha/cropping)
Cropping intensity (/year)
Level of Salinity (indicate level of EC)
Recommended varieties
Bac Lieu (HoaBinh Town)
5-6 tons/ ha
3
EC = 8-10 ds/m
Region of 3 crops: 2 for salinity and another crop
HATRI 170, HATRI 144
Tra Vinh
(Cau Ke district)
6-7 tons under normal condition; under saline soil, yield is lower at
4-5 tons/ha
2
EC = 8-10 ds/m
HATRI 20, HATRI 190, HATRI 192
Soc Trang
6-6.2 tons
2 varieties + another crop
EC = 10-12 ds/m
HATRI 170
Ben Tre
5-6 ton/ ha
2 cropping, since areas are severely affected by salinity
EC = 12-15 ds/m
HATRI 170, HATRI 190, HATRI 192, HATRI 475
Ca Mau
(Tran van Thoi District)
3-5 tons/ha
(yield is very low caused by salt, sulfate soil, and drought)
1 crop
EC = 12-15 ds/m
HATRI 170, HATRI 144
Kien Giang
6-7 tons/ha
2 crops
EC = 12-15 ds/m
HATRI 60, HATRI 62
 
 
 
 
 
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