Nghiên cứu nhằm đánh giá đặc tính hình thái nông học, chất lượng gạo và tính kháng sâu bệnh của 6 giống lúa nếp, bao gồm Nếp thơm AG, TMT2, NV25, NV26, NV27, ĐÙM 3T. Thí nghiệm được bố trí hoàn toàn ngẫu nhiên với ba lần lặp lại, diện tích mỗi lô là 20 m2 (4 m × 5 m). | Tạp chí Khoa học và Công nghệ Nông nghiệp Việt Nam - Số 08 129 2021 Yano M. Katayose Y. Ashikari M. Yamanouchi Zhang B. Liu H. Qi F. Zhang Z. Li Q. Han Z. U. Monna L. Fuse T. Baba T. Yamamoto K. and Xing Y. 2019. Genetic interactions among Umehara Y. Nagamura Y. and Sasaki T. 2000. Ghd7 Ghd8 OsPRR37 and Hd1 contribute to large Hd1 a major photoperiod sensitivity quantitative variation in heading date in rice. Springer Open 12 trait locus in rice is closely related to the arabidopsis 48. owering time gene Constans. Plant Cell 12 247-2483. Zhang . Cao . Chen . Zhang . Zhuang Ye J. Niu X. Yang Y. Wang S. Xu Q. Yuan X. Yu . and Cheng . 2016. E ects of Hd2 in the H. Wang Y. Wang S. Feng Y. and Wei X. 2018. presence of the photoperiod-insensitive functional Divergent Hd1 Ghd7 and DTH7 alleles control allele of Hd1 in rice. e Company of Biologists Ltd heading date and yield potential of japonica Rice in 5 1719-1726. Northeast China. Frontiers in Plant Science 9 35. Surveying the e ect of heading time on yield of japonica rice varieties Nguyen i Pha Le My Linh Le Ngoc Lel Nguyen Khac ang Tran Dinh Gioi Abstract irty japonica rice varieties used in this study were classi ed into 4 groups of growth duration including 6 varieties with very early growth duration 7 varieties with early growth duration 7 varieties with medium growth duration and 10 varieties with long growth duration. e longer duration rice varieties have higher yields than the shorter duration varieties of which the 3 highest yielding varieties belong to the long growth duration group and the 3 lowest yielding varieties belong to the very early group. e heading time was correlated with plant height number of lled seeds panicle ratio of un lled seeds and seed yield of rice varieties. e later heading time the higher plant height the more lled seeds and the higher grain yield. However rice yield was only moderately correlated with the number of panicles per hill weakly correlated with the number
