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以两用核不育系龙S和4个质核互作不育系(T98A、137A、中3A、资100A)与4个恢复系(R125、R123、28H130、R358)进行不完全双列杂交,获得20个杂交组合,以威优46作为对照,研究了杂交稻种子(F1)及杂交稻稻谷(F2)糙米发芽前、后γ-氨基丁酸(GABA)含量的杂种优势表现。结果表明,不同亲本间、不同组合F1代间和F2代间糙米发芽前、后的GABA含量均存在显著差异;糙米发芽后的GABA含量大大高于发芽前的GABA含量;糙米发芽前的GABA含量F1代、F2代均有部分组合存在超高亲优势,糙米发芽后的GABA含量F1代和F2代所有组合均表现出超高亲优势。说明具有较好发芽能力的报废的杂交稻种子及杂交稻稻谷均可作为富含GABA发芽糙米制品的生产原料。
Incomplete diallel crosses were performed with four restorer lines (R125, R123, 28H130, R358) using a dual-genic male sterile line LongS and 4 CMS lines (T98A, 137A, 3A, , And 20 hybrid combinations were obtained. The effects of γ-aminobutyric acid (GABA) content on hybrid rice seed (F1) and hybrid rice (F2) brown rice before and after germination were studied using Weiyou 46 as control. The results showed that the GABA contents of brown rice before and after germination were significantly different among different parents, F1 generation and F2 generation. The content of GABA in brown rice after germination was significantly higher than that before germination. The content of GABA in brown rice before germination There were some combinations of F1 generation and F2 generation that had the advantage of super high progenies. The GABA content of brown rice after germination showed that all the combinations of F1 generation and F2 generation showed super high pro-dominant. This shows that the hybrid rice with good sprouting ability and hybrid rice can be used as the raw material of GABA-rich germinated brown rice products.