欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (3): 54-61.doi: 10.11924/j.issn.1000-6850.2014-1859

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

新选育杂交稻父本新品系的稻米品质分析

唐文邦1,张桂莲1,陈桂华1,徐一兰2,陈黎明1,王建龙1   

  1. (1湖南农业大学农学院,长沙 410128；2湖南生物机电职业技术学院,长沙 410127）
  • 收稿日期:2014-07-04 修回日期:2014-07-04 接受日期:2014-08-18 出版日期:2015-03-19 发布日期:2015-03-19
  • 通讯作者: 王建龙
  • 基金资助:
    湖南省自然科学基金项目“水稻抗倒伏机理与相关性状研究及其QTL定位”(2013JJ8011)；湖南省教育厅重点项目“水稻茎杆抗倒伏机制及主效QTL精细定位研究”(13A042)；教育部“创新团队发展计划”资助“作物抗逆与种质创新”(IRT1239)。

Analysis of the Grain Quality of New Breeding Male Parent Lines of Hybrid Rice

Tang Wenbang1, Zhang Guilian1, Chen Guihua1, Xu Yilan2, Chen Liming1, Wang Jianlong1   

  1. (1College of Agronomy, Hunan Agricultural University, Changsha 410128;2College of Biological and Electromechanical Polytechnic, Changsha 410127)
  • Received:2014-07-04 Revised:2014-07-04 Accepted:2014-08-18 Online:2015-03-19 Published:2015-03-19

摘要： 为探明新选育杂交稻父本品系稻米品质性状的变化规律，以‘C两优343’、‘天优华占’、‘金优207’3个组合为对照，对新选育的83个杂交稻父本品系和超市购买的9个高档商品米的品质进行了比较分析。结果表明：新选育杂交稻父本品系的糙米率、垩白粒率、长宽比、胶稠度以及食味综合评分整体表现较好；与国家优质米标准的12个指标相比，所有指标达到国家三级优质米标准的品系有6个。与高档商品米比较，新选育杂交稻父本品系的垩白粒率、垩白度分别低于高档商品米有22个和45个，高于高档商品米分别有61个和38个，新选育杂交稻父本品系垩白粒率、垩白度的变异系数均小于高档商品米；直链淀粉含量低于高档商品米，但其变异系数高于高档商品米。分析结果表明，新选育杂交稻父本品系垩白粒率和垩白度较高的品系个数占总数的百分比分别为69.3%和43.2%，其优质达标率较低，仅25.0%和51.1%，降低其垩白粒率和垩白度是今后水稻稻米品质改良的重点。

关键词: 农户, 农户, 借贷行为, 影响因素, 新型农村金融机构, 多分类逻辑回归模型

Abstract: To ascertain the characteristics of grain quality of breeding male parent lines of hybrid rice, and high-grade commercial rice, the grain quality of new varieties of male parent and high-grade commercial rice were analyzed by using ‘C liangyou343’, ‘Tianyouhuazhan’ and ‘Jinyou207’ as control. The results showed that the brown rice percentages, percentages of chalky, length-width ratio, gel consistency and rice taste value of breeding male parent lines of hybrid rice were better than that of the CK. According to the 12 index of the national high quality rice standards, the hybrid rice combinations of 13RH034, 13RH053, 13RH054, 13RH061, 13RH103 and 13RH113 reached the third national quality rice standard. Compared with the grain quality of high-grade commercial rice, the numbers of breeding male parent lines of hybrid rice with lower chalky and chalkiness degree of were 22 and 45, respectively, and the numbers of breeding male parent lines of hybrid rice with higher chalky and chalkiness degree than that of the high-grade commercial rice were 61 and 38, respectively. But the correlation coefficient of the percentages of chalky and chalkiness degree of breeding male parent lines of hybrid rice were lower than that of high-grade commercial?rice. Meanwhile, the amylose content of breeding male parent lines of hybrid rice were decreased compared with high-grade commercial?rice, but the correlation coefficient of amylose content of breeding male parent lines of hybrid rice were increased. The results indicated that the percentage of higher chalky and chalkiness degree of breeding male parent lines of hybrid rice was 69.3% and 43.2%, respectively. But the chalky and chalkiness degree of superior quality rates of breeding male parent lines of hybrid rice was 25.0% and 51.1%, respectively. Therefore, the decrease of chalky and chalkiness degree of breeding male parent lines of hybrid rice should be the focus in the improvement of grain quality of hybrid rice breeding.