ĐÁNH GIÁ KHẢ NĂNG CHỊU MẶN CỦA CÁC TỔ HỢP NGÔ LAI Ở GIAI ĐOẠN CÂY CON

The study was conducted at National Maize Research Institute with 24 named maize hybrids as STM1 to STM24 at five different salt concentrations were 0; 50; 100; 150; 200 mM NaCl. After 7 days germinated in room temperature, seedlings were transplant to nutrient solutions salinized with salt. 17 days old seedlings were harvested for calculating of growth parameters as day to seedlings fully wilt and degradation, root and shoot length, seedling dry matter production, content. As the study results, salt stress reduced plant growth of all hybrids but the STM10 and STM21 were showed better salt tolerance, while STM17 and STM18 presented salt-sensitive. The analysed results for Na+ and K+ showed that among the hybrids, STM21 had lower Na+ and higher K+ content in both root and shoot of the seedling.