TS Đỗ Việt Anh. Kết quả bước đầu về nghiên cứu, chọn tạo giống lúa chịu hạn cho vùng đất cạn và vùng sinh thái có điều kiện khó khăn

KẾT QUẢ BƯỚC ĐẦU VỀ NGHIÊN CỨU, CHỌN TẠO  GIỐNG LÚA CHỊU HẠN CHO VÙNG ĐẤT CẠN  VÀ VÙNG SINH THÁI CÓ ĐIỀU KIỆN KHÓ KHĂN 

TS. Đỗ Việt Anh, ThS. Nguyễn Xuân Dũng và cs. 

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SUMMARY 

 
Initial results about research, drought- resistant rice breeding for dry land  and ecological areas with difficult conditions  In  the  last  50  years,  Vietnam  was  one  of  five  countries  in  Asia  that  suffered  heavy  losses  from climate  changes.  It  was  reported  that  the  developing  of drought-resistant  rice  varieties  is  one  of  the most effective solutions that can save not only time but also financial issue for developing suitable rice varieties for the drought prone areas.  Upland  rice  varieties  were  less  invested  and  did  not  meet  the  current  production  requirements, therefore,  research  on  drought-resistant  rice  breeding  is  necessary  to  create  new  rice  varieties  that tolerant to drought and have high yield and good quality.  This research was focus on selecting, examining, and creating initial rice lines for droughttolerant rice breeding  for  rain  fed  land  and  areas  with  water  deficit.  The  research  also  examined  the  growth  of  the selected rice lines in different rice grow ecological regions to find the most suitable lines for each region. By December 2012, 343 lines were collected and evaluated and 192 lines were polymorphismed to identified the drought tolerant traits, 1645 lines were selected for rainfed upland areas, and 1920 lines were selected for water decifit areas. In addition, numerous rice varieties were sent to national rice testing systems to test the adaptation capacities (CH16, CN1, LC93-4, LCH33 and LCH37). The rice varieties LCH33, LCH37, CH16 and LC93-4 were promising varieties which meet project’s initial objectives.