Erect panicle super rice varieties enhance yield by harvest index advantages in high nitrogen and density conditions

Liang TANG, Hong GAO, Hirooka Yoshihiro, Homma Koki, Nakazaki Tetsuya, Tian sheng LIU, Shiraiwa Tatsuhiko, Zheng jin XU

研究成果: Article査読

11 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)1467-1473
ページ数7
ジャーナルJournal of Integrative Agriculture
16
7
DOI
出版ステータスPublished - 2017 7
外部発表はい

ASJC Scopus subject areas

  • 食品科学
  • 生化学
  • 生態学
  • 食用動物
  • 動物科学および動物学
  • 農業および作物学
  • 植物科学

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