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Research on answer resistance (Vegetablesechinochloa crus galli) of some new quality rice varieties in laboratory conditions

Research and production of clean, high-quality and high-yield rice, sustainable environmental protection are the most important and important tasks of many countries in the world as well as in Vietnam today. Therefore, the research, selection and creation of rice varieties that are both high-yield and resistant to pests, weeds, and climate change, in order to minimize the use of herbicides and pesticides. | SCIENTIFIC JOURNAL OF HANOI METROPOLITAN UNIVERSITY VOL.53 2021 91 RESEARCH ON ANSWER RESISTANCE VEGETABLES- ECHINOCHLOA CRUS-GALLI OF SOME NEW QUALITY RICE VARIETIES IN LABORATORY CONDITIONS Nguyen Nhu Toan1 Nguyen Thanh Dung1 Nguyen Thi Binh1 Nguyen Truong Khoa2 1 Hanoi Metropolitan University 2Agricultural Genetics Institute Abstract Research and production of clean high-quality and high-yield rice sustainable environmental protection are the most important and important tasks of many countries in the world as well as in Vietnam today. Therefore the research selection and creation of rice varieties that are both high-yield and resistant to pests weeds and climate change in order to minimize the use of herbicides and pesticides. Deeply protecting people s health and the environment sustainably is extremely necessary. Our research initially identified a number of rice lines cultivars resistant to weeds Echonochloa Crus-Galli such as BT7DB Gia Loc 26 HT7DB DH18 BC15-02 CL. 9DB XH1 18NP2 TD. This will be a rich and valuable starting material source effectively serving the selection and creation of weed- resistant rice varieties in sustainable food production. Keywords Rice antagonism grass environment. Received 25 June 2021 Revised and accepted for publication 23 August 2021 Email nntoan@daihocthudo.edu.vn 1. INTRODUCTION Vietnam is one of the leading major rice exporting countries in the world. However Vietnam s main rice export markets are developing countries including Southeast Asia about 40-50 African countries about 20-30 there are also other markets such as the Middle East and North America FAO 2013 3 . One of the reasons that the rice export market in Vietnam is limited is the impact of biotic and abiotic adverse factors that reduce the yield and quality of rice. Among these unfavorable factors weeds are a major biological limitation on rice production in Vietnam especially increases the economic losses seriously reducing about 30 - 50 of rice production in