KẾT QUẢ ĐÁNH GIÁ VÀ CHỌN LỌC THẾ HỆ G1 CỦA CÁC GIỐNG LÚA NƯƠNG ĐỊA PHƯƠNG

Two hundreds forty nine purelines G1 of four local upland rice varieties (including 93 lines of Khau tan nuong, 53 lines of Khau mang, 50 lines of Khau nam pua, 53 lines of Khau Ky) were chosen for evaluation and selection. The main morphological traits, including days to heading, days to ripening, culm length, panicle length, number of panicles per plant, weight of 1000 seeds and yield were used to evaluate. 41 out of 249 purelines G1 with high uniformity were selected by evaluating of morphological traits. On the other hand, these 41 selected purelines were used to investigate the genetic homogeneity by 20 SSR markers. Total 49 alleles were observed among 41 rice purelines. All 10 purelines of Khau tan nuong cultivars as well as 10 purelines of Khau mang had the same alelles at all 20 SSR loci. Two purelines had the alleles different from other 8 lines of Khau nam pua cultivar at the loci RM44 and RM447. One out of 11 purelines of Khau Ky cultivar had the heterozygous allele at locus RM154. 38 rice purelines G1 (including 10 lines of Khau tan nuong, 10 lines of Khau mang, 8 lines of Khau nam pua and 10 lines of Khau Ky cultivars) were chosen for the future study.