N198是广东省农业科学院水稻研究所利用优质籼稻品种五山丝苗为母本,低谷蛋白粳稻品种W3660为父本杂交,经多代回交结合分子标记辅助选择选育出的一个低谷蛋白籼稻新品种。其丰产、稳产性好,米质优,抗稻瘟病,谷蛋白含量低于4%,可作为糖尿病肾病患者的主食或食疗辅助食品。本文简要介绍了N198的选育过程、特征特性以及高产栽培技术。 N198 is an new indica rice with low glutelin content which bred from the cross of Wushansimiao × W3660 by backcross breeding and marker-assisted selection by Rice Research Institute, Guangdong Academy of Agricultural Sciences. It has the characteristics of good and stable yielding, good quality, resistant to rice blast and more importantly with the glutelin content lower than 4%. So N198 is an ideal stable or therapeutic supplementary food for diabetic nephropathy patients. In this paper, we introduced the breeding process, characteristics and high yield cultivation techniques of N198.
根据田间观察,N198的大部分农艺性状与亲本五山丝苗相近似。该品种前期长势较旺盛,叶色碧绿,根、茎、叶形态和结构十分协调,叶片挺直,茎态集散适中,分蘖力较强,穗型中等,着粒较密,结实率高,后期熟色好。N198苗期耐寒性强,孕穗期、花期耐寒性中等,成熟期中强。主要性状指标(见表1):全生育期133~136 d,比五山丝苗早1~2 d;株高109.5 cm (两年平均),与五山丝苗(109.5 cm)相当;有效穗数243.5万条/hm2,略低于五山丝苗(266.0万条/hm2);每穗粒数151.0粒,与五山丝苗(151.5粒)相当;结实率88.3%,略高于五山丝苗(85.5%),千粒重21.2 g,略大于五山丝苗(20.3 g)。
3.5. 谷蛋白含量
稻米样品谷蛋白含量的测定结果见图2。供体亲本W3660和受体亲本五山丝苗的谷蛋白含量分别为
The major agronomic traits of N198 and its paren
References蔡金洋, 杨尧城. 低含量谷蛋白水稻研究进展[J]. 农业科技通讯, 2011(8):154-155.Mochizuki, T. and Hara, S. (2000) Usefulness of the Low Protein Rice on the Diet Therapy in Patients with Chronic Renal Failure. Japanese Journal of Nephrology, 42, 24-29.焦爱霞, 杨昌仁, 曹桂兰, 等. 水稻蛋白质含量的遗传研究进展[J]. 中国农业科学, 2008, 41(1): 1-8.刘巧泉, 周丽慧, 王红梅, 等. 水稻种子贮藏蛋白合成的分子生物学研究进展[J]. 分子植物育种, 2008, 6(1): 1-15.Iida, S., Amano, E. and Nishio, T. (1993) A Rice (Oryza sativa L.) Mutant Having a Low Content of Glutelin and a High Content of Prolamine. Theoretical and Applied Genetics, 87, 374-378.Nishimura M., Kusaba M., Miyahara K., et al. (2005) New Rice Varieties with Low Levels of Easy-to-Digest Protein, “LGC-Katsu” and “LGC-Jun”. Breeding Science, 55, 103-105. <br>https://doi.org/10.1270/jsbbs.55.103万建民, 翟虎渠, 刘世家, 等. 功能性专用水稻品种W3660的选育[J]. 作物杂志, 2004(5): 58.黄道强, 周少川, 李宏, 等. 优质稻新品种五山丝苗的选育及利用[J]. 广东农业科学, 2011, 38(9): 15-16.Wang, Y.H., Liu, S.J., Ji, S.L., et al. (2005) Fine Mapping and Marker-Assisted Selection (MAS) of a Low Glutelin Content Gene in Rice. Cell Research, 15, 622-630. <br>https://doi.org/10.1038/sj.cr.7290332