Erect panicle super rice varieties enhance yield by harvest index advantages in high nitrogen and density conditions
文献类型: 外文期刊
第一作者: Liang, Tang
作者: Liang, Tang;Hong, Gao;Liu Tian-sheng;Xu Zheng-jin;Hong, Gao;Yoshihiro, Hirooka;Koki, Homma;Tetsuya, Nakazaki;Tatsuhiko, Shiraiwa
作者机构:
关键词: super rice;erect panicle;harvest index;nitrogen;planting density
期刊名称:JOURNAL OF INTEGRATIVE AGRICULTURE ( 影响因子:2.848; 五年影响因子:2.979 )
ISSN: 2095-3119
年卷期: 2017 年 16 卷 7 期
页码:
收录情况: SCI
摘要: The erect panicle (Ep) type is an important characteristic for japonica super rice in Northeast China and plays a significant role in enhancing yield. The Ep type is considered to be a genetic ideotype resource to the japonica super rice group by virtue of its agronomic advantages such as grain number per panicle and biomass. This study addresses the effects of nitrogen and planting density conditions on yielding performance regarding panicle type (PT) using the recombinant inbred line (RIL) population derived from the cross between an Ep variety Liaogeng 5 and non-Ep variety Wanlun 422. The genetics underlying the Ep type proved to be robust not only for panicle-type optimization but also plant height, panicle length, flag leaf length and seed density. We also found that regardless of nitrogen and density, correlation between harvest index (HI) and plant height was not significant in Ep type whatever the nitrogen and density. The application of Ep type provides a potential strategy for yield improvement by increasing biomass through HI maintainable in rice.
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